Publications

Papers

*Corresponding author

  1. Yuya Mikami, Hiroaki Yoshioka*, Nasim Obata, Sangmin Han, and Yuji Oki, “Polarization-dependent refractive index analysis for nanoporous microcavities by ray tracing of a propagating electromagnetic field,” Optical Materials Express 11, 2924-2937 (2021).

  2. Wey Yih Heah, Hiroshi Yamagishi, Keitaro Fujita, Megumi Sumitani, Yuya Mikami, Hiroaki Yoshioka, Yuji Oki and Yohei Yamamoto*, “Silk fibroin microspheres as optical resonators for wide-range humidity sensing and biodegradable lasers,” Materials Chemistry Frontiers 5, 5653 (2021).

  3. Keisuke Nakakubo, Hiroaki Yoshioka, Kinichi Morita, Ryoichi Ishimatsu, Abolfazl Kiani, Hans Hallen, Michael D. Dickey, and Yuji Oki*, “Dynamic control of reflective/diffusive optical surfaces on EGaIn liquid metal,” Optical Materials Express 11, 2099-2108 (2021).

  4. Junfeng Zhu, Lei Wan*, Chenxi Zhao, Ryo Sakai, Yuya Mikami, Tianhua Feng, Cong Chen, Weiping Liu, Hiroaki Yoshioka, Zhaohui Li, and Yuji Oki*, “Tunable and flexible deep-ultraviolet bandpass filters based on micro- and nanoparticle/polydimethylsiloxane hybrid membranes,” Optical Materials 115, 111073 (2021).

  5. Junfeng Zhu*, Chenxi Zhao, Ryo Sakai, Hiroaki Yoshioka, and Yuji Oki, “The particle size distribution influence on the spectroscopic performance of CaF2 dispersed PDMS hybrid materials,” Proc. SPIE 11682, Optical Components and Materials XVIII, 116821I (2021).

  6. Keisuke Nakakubo*, Hiroki Inoue, Hiroaki Yoshioka, Kinichi Morita, Takuji Kotani, and Yuji Oki, “Flexible waveguides composed of PDMS based elastomer by pen-drawing technique for printable optics,” Proc. SPIE 11682, Optical Components and Materials XVIII, 116820J (2021).

  7. Abdul Nasir, Yuya Mikami, Rui Yatabe, Hiroaki Yoshioka*, Nilesh Vasa, and Yuji Oki, “Fully room temperature and label free biosensing based on an ink-jet printed polymer microdisk laser,” Optical Materials Express 11, 592-602 (2021).

  8. Abdul Nasir, Rui Yatabe, Yuya Mikami, Hiroaki Yoshioka*, Nilesh Vasa, and Yuji Oki, “Ink-jet printed, blended polymer-based microdisk resonators for controlling non-specific adsorption of biomolecules,” Optics Letters 46, 262-265 (2021).

  9. Harunobu Takeda*, Hiroaki Yoshioka, Hiroaki Minamide, Yuji Oki, and Chihaya Aadachi, “0.5–4.5 THz band terahertz spectroscopy of thermally activated delayed fluorescence molecules,” Optics Communications 476, 126339 (2020).

  10. Taku Takagishi, Hiroaki Yoshioka*, Yuya Mikami, and Yuji Oki, “On-demand inkjet-printed microdisk laser with air cladding by liquid flow microetching,” Applied Optics 59, 6340-6346 (2020).

  11. Chacriya Malasuk*, Ryoichi Ishimatsu, Kinichi Morita, Hiroaki Yoshioka, and Yuji Oki, “Flow-through optical device based on silicone optical technology (SOT) for determination of iron in drinkable tap water,” Microchemical Journal 157, 104897 (2020).

  12. Chacriya Malasuk*, Keisuke Nakakubo, Ryoichi Ishimatsu, Yuta Nakashima, Hiroaki Yoshioka, Kinichi Morita, and Yuji Oki, “Compact and on-demand 3D-printed optical device based on silicone optical technology (SOT) for on-site measurement: Application to flow injection analysis,” Review of Scientific Instruments 90, 104103 (2019).

  13. K. T. Abdul Nasir, Cong Chen, Yuya Mikami, Taku Takagishi, Hiroaki Yoshioka*, Motonobu Matsuyama, Naoya Nishimura, Nilesh J. Vasa, and Yuji Oki, “Lasing characteristics of a pyrromethene597-doped microdisk laser fabricated by the ink-jet printing method,” Japanese Journal of Applied Physics 58, SJJC05 (2019).

  14. Lei Wan*, Cong Chen, Junfeng Zhu, K. T. Abdul Nasir, Qingyu Cui, Zhenshi Chen, Hiroaki Yoshioka, Weiping Liu, Yuji Oki, and Zhaohui Li*, “Changes in optical characteristics induced by polymer blending in printed colloidal quantum dots microlasers,” Optics Express 27, 19615-19623 (2019).

  15. Chacriya Malasuk*, Keisuke Nakakubo, Hiroaki Yoshioka, Kinichi Morita, and Yuji Oki, “3D printing optical devices based on silicone optical technology (SOT) and its application on analytical chemistry,” Proc. SPIE 10914, Optical Components and Materials XVI, 109141S (2019).

  16. Harunobu Takeda*, Michika Takeda, Hiroaki Yoshioka, Hiroaki Minamide, Yuji Oki, and Chihaya Adachi, “Fluorescence lifetime elongation of thermally activated delayed fluorescence 4CzIPN molecules with encapsulation into zeolitic imidazole frameworks ZIF-11,” Optical Materials Express 9, 1150-1160 (2019).

  17. Junfeng Zhu, Keisuke Nakakubo, Yuya Mikami, Hiroaki Yoshioka, Kinichi Morita, and Yuji Oki*, “Investigation and modeling of UV band-pass-filtering white compound materials for potting or embedding in micro-optical applications,” Optical Materials Express 9, 1002-1014 (2019).

  18. Cong Chen, Jin Yuan, Lei Wan*, Hengky Chandrahalim*, Zhenshi Chen, Naoya Nishimura, Harunobu Takeda, Hiroaki Yoshioka, Weiping Liu, Yuji Oki, Xudong Fan, and Zhaohui Li*, “Demonstration of on-chip quantum dot microcavity lasers in a molecularly engineered annular groove,” Optics Letters 44, 495-498 (2019).

  19. Hiroaki Yoshioka*, Taku Takagishi, Shintaro Mitsui, Yuya Mikami, Chen Cong, Naoya Nishimura, and Yuji Oki, “Fabrication and lasing evaluation of fluorinated spherical polymer based microdisk cavity printed by ink-jet technique,” The Review of Laser Engineering, 46, 41-44 (2018).

  20. Yuya Mikami, Hiroaki Yoshioka*, Soichiro Ryu, Naoya Nishimura, and Yuji Oki, “Organic-inorganic hybrid microdisk laser with dye and silica mixed doping prepared by ink-jet printing method,” Optics Express 26, 7140-7147 (2018).

  21. Cong Chen, Lei Wan, Hengky Chandrahalim, Jian Zhou, Hui Zhang, Sangha Cho, Ting Mei, Hiroaki Yoshioka, Huiping Tian, Naoya Nishimura, Xudong Fan, L. Jay Guo*, and Yuji Oki*, “Effects of edge inclination angles on whispering-gallery modes in printable wedge microdisk lasers,” Optics Express 26, 233-241 (2018).

  22. Keisuke Nakakubo, Hiroaki Nomada, Hiroaki Yoshioka, Kinichi Morita, and Yuji Oki*, “Gallium and polydimethylsiloxane molding for self-organized spherical lens surface fabrication,” Applied Optics 56, 9900-9906 (2017).

  23. Hiroaki Nomada, Kinichi Morita, Hirokazu Higuchi, Hiroaki Yoshioka, and Yuji Oki*, “Carbon–polydimethylsiloxane-based integratable optical technology for spectroscopic analysis,” Talanta 166, 428-432 (2017).

  24. Hiroaki Yoshioka*, Yusuke Itoh, Ayumu Kiyomori, and Yuji Oki, “Controlling mobility speed of dye molecules in polydimethylsiloxane through molecular weight and solubility,” Optical Materials Express 6, 3417-3426 (2016).

  25. Harunobu Takeda, Cong Chen, Takeshi Komino, Hiroaki Yoshioka, Yuji Oki*, and Chihaya Adachi, “0.6 – 1.6 THz band spectroscopy of organic thermally activated delayed fluorescence materials,” Optical Materials Express 6, 3045-3052 (2016).

  26. Cong Chen*, Jifeng Li, Soichiro Ryu, Hiroaki Yoshioka, Masaaki Ozawa, and Yuji Oki, “Spectroscopic behavior in whispering-gallery modes by edge formation of printed microdisk lasers,” Proc. SPIE 9668, Micro+Nano Materials, Devices, and Systems, 96685J (2015).

  27. Hiroaki Yoshioka*, Tomoya Ota, Cong Chen, Soichiro Ryu, Kei Yasui, and Yuji Oki, “Extreme ultra-low lasing threshold of full-polymeric fundamental microdisk printed with room-temperature atmospheric ink-jet technique,” Scientific Reports 5, 10623 (2015).

  28. Cong Chen*, Soichiro Ryu, Hiroaki Yoshioka, Kei Yasui, and Yuji Oki, “Low-threshold lasing from organic and polymeric microdisk printed by room temperature atmosphere ink-jet technique,” Proc. SPIE 9360, Organic Photonic Materials and Devices XVII, 936007 (2015).

  29. Tokuma Nakamichi, Yu Yang*, Tomoya Ohta, Hiroaki Yoshioka, Masayuki Yahiro, Masanao Era, Hirofumi Watanabe, Yuanjing Cui, Yuji Oki*, and Guodong Qian, “Stackable spectral-sensitive conductive films based on cyanine aggregates via an inkjet method,” Dyes and Pigments 98, 333-338 (2013).

  30. Hiroaki Yoshioka, Yusuke Itoh, Ayumu Kiyomori, Masanao Era, and Yuji Oki*, “Fluorene-based chromophore for degradation-recoverable solid-state dye laser,” Optical Materials Express 3, 176-183 (2013).

  31. Yu Yang, Tokuma Nakamichi, Hiroaki Yoshioka, Masayuki Yahiro, Masanao Era, Hirofumi Watanabe, Yuanjing Cui, Yuji Oki*, and Guodong Qian*, “Spectral-resolving capable and integratable multilayered conductive films via an inkjet method,” Journal of Materials Chemistry C 1, 1739-1744 (2013).

  32. Hiroyuki Kubota, Soichiro Oomi, Hiroaki Yoshioka, Hirofumi Watanabe, and Yuji Oki*, “Optical bending sensor using distributed feedback solid state dye lasers on optical fiber,” Optics Express 20, 14938-14944 (2012).

  33. Kota Kuwamitsu, Hiroaki Yoshioka, Shusaku Kataoka, Nahoko Naruishi, Yoshihide Tanaka, and Yuji Oki, “Development of Integratable Laser for Optofluidic Chip,” The Review of Laser Engineering, 40, 952-956 (2012).

  34. Hiroaki Yoshioka, Yu Yang, Hirofumi Watanabe, and Yuji Oki*, “Fundamental characteristics of degradation- recoverable solid-state DFB polymer laser,” Optics Express 20, 4690-4696 (2012).

  35. Hiroaki Yoshioka, Wang Weibo, Kota Kuwamitsu, Wataru Iwasaki, Yukihiko Yamashita, Nobuo Miyadera and Yuji Oki*, “Laser action of Nd-Complex-Doped Polymer Laser Based on Liquid,” Molecular Crystals and Liquid Crystals 539, 225-230 (2011).

  36. Yu Yang, Tokuma Nakamichi, Hiroaki Yoshioka, Soichiro Omi, Ryo Goto, Hirofumi Watanabe, and Yuji Oki*, “Intensity Sensitive Organic Photodiodes Patterned by Inkjet Method,” Molecular Crystals and Liquid Crystals 538, 136-142 (2011).

  37. Hiroaki Yoshioka, Shinki Nakamura*, Takayo Ogawa, and Satoshi Wada, “Dual-wavelength mode-locked Yb:YAG ceramic laser in single cavity,” Optics Express 18, 1479-1486 (2010).

  38. Shinki Nakamura*, Hiroaki Yoshioka, Takayo Ogawa, and Satoshi Wada, “Broadly Tunable Yb3+-Doped Y3Al5O12 Ceramic Laser at Room Temperature,” Japanese Journal of Applied Physics 48, 060205 (2009).

  39. Hiroaki Yoshioka, Shinki Nakamura*, Takayo Ogawa, and Satoshi Wada, “Diode-pumped mode-locked Yb:YAG ceramic laser,” Optics Express 17, 8919-8925 (2009).

  40. Shinki Nakamura*, Hiroaki Yoshioka, Yu Matsubara, Takayo Ogawa, and Satoshi Wada, “Efficient tunable Yb:YAG ceramic laser,” Optics Communications 281, 4411-4414 (2008).

  41. Hiroaki Yoshioka, Shinki Nakamura*, Takayo Ogawa, and Satoshi Wada, “Efficient Broadly Tunable Yb:YAG Ceramic Laser,” The Review of Laser Engineering, 36, 648-652 (2008).

  42. Shinki Nakamura*, Hiroaki Yoshioka, Yu Matsubara, Takayo Ogawa, and Satoshi Wada, “6.8-W High Efficiency Yb:YAG Ceramic Laser at Room Temperature,” The Review of Laser Engineering, 36, Supplement, 1073-1076 (2008).

Presentations (Int'l Conf.)

  1. Junfeng Zhu, Chenxi Zhao, Ryo Sakai, Hiroaki Yoshioka, and Yuji Oki, “The particle size distribution influence on the spectroscopic performance of CaF2 dispersed PDMS hybrid materials,” in SPIE. Photonics West OPTO 2021, 11682-52 (2021.3.5, Online).

  2. Keisuke Nakakubo, Hiroki Inoue, Hiroaki Yoshioka, Kinichi Morita, Takuji Kotani, and Yuji Oki, “Flexible waveguides composed of PDMS based elastomer by pen-drawing technique for printable optics,” in SPIE. Photonics West OPTO 2021, 11682-17 (2021.3.5, Online).

  3. Chenxi Zhao, Junfeng Zhu, Kinichi Morita, Hiroaki Yoshioka, Yuji Oki, “Study on the effect of particle size for the UV spectroscopy of a novel CaF2 dispersed PDMS spectroscopic material,” in The 73th Joint Conference of Electrical, Electronics and Information Engineers in Kyushu, 09-1A-01 (2020.9.26, Online).

  4. Abdul Nasir, Yuya Mikami, Taku Takagishi, Rui Yatabe, Hiroaki Yoshioka, Nilesh J. Vasa, and Yuji Oki, “Fully room temperature bio-sensing using active microdisk fabricated by ink-jet printing method,” in Conference on Lasers and Electro-Optics, OSA Technical Digest (Optical Society of America, 2020), paper AW3K.5 (2020.5.14, Online).

  5. Junfeng Zhu, Ryo Sakai, Chenxi Zhao, Hiroaki Yoshioka, Kinichi Morita, and Yuji Oki, “Development of ultraviolet down conversion filters based on scattering filter materials,” in Conference on Lasers and Electro-Optics, OSA Technical Digest (Optical Society of America, 2020), paper JTu2F.6 (2020.5.13, Online).

  6. Takaki Isayama, Yusuke Hasuo, Hiroaki Yoshioka, Hitoshi Mizuguchi, Tomoaki Taniguchi, Kinichi Morita, and Yuji Oki, “Development Multiple Scattering Colorimetric Spectroscopy for SOT Mobile Metal Trace Detection on Silicone Optical Technology,” in PITTCON 2020, 626-24P (2020.3.5, Chicago, USA).

  7. Chacriya Malasuk, Hiroaki Yoshioka, Ryoichi Ishimatsu, Kinichi Morita, Yuji Oki, “Flow-through Optical Device based on Silicone Optical Technology (SOT) for Iron Determination in Drinkable Tap Water,” in PITTCON 2020, 5-10-6 (2020.3.1, Chicago, USA).

  8. T. Takagishi, H. Yoshioka, Y. Mikami, N. Nishimura, and Y. Oki, “Improvement of lasing threshold of ink-jet printed polymeric microdisk cavity by precise controlled wet etching,” in Conference on Lasers and Electro-Optics, OSA Technical Digest (Optical Society of America, 2019), paper SM2O.5 (2019.5.6, San Jose, USA).

  9. Sakai Ryo, Nakakubo Keisuke, Chacriya Malasuk, Hiroaki Yoshioka, Kinichi Morita, Yuta Nakashima, and Yuji Oki, “Compact and Multiplexed Absorptionmeter with Newly Developed Arrayed Quasi Spatial Filter Integrated for Microplate Analysis,” in PITTCON 2019, 990-21 P (2019.3.19, Chicago, USA).

  10. Junfrng Zhu, Yusuke Hasuo, Keisuke Nakakubo, Yuya Mikami, Hiroaki Yoshioka, Kinichi Morita, and Oki Yuji, “Development of Compact Optical System based on Transparent / Translucent Filters in UV Region,” in PITTCON 2019, 990-22 P (2019.3.19, Chicago, USA)

  11. Chacriya Malasuk, Keisuke Nakakubo, Hiroaki Yoshioka, Kinichi Morita, and Yuji Oki, “3D printing optical devices based on silicone optical technology (SOT) and its application on analytical chemistry,” in SPIE. Photonics West OPTO 2019, 10914-66 (2019.2.6, San Francisco, USA).

  12. Yuya Mikami, Hiroaki Yoshioka, Sangmin Han, and Yuji Oki, “Investigation of Refractive Index Estimation by FDTD simulation for Nanosilica-aggregated Porous Microdisk” in 3rd Asian Applied Physics Conference (Asian-APC), 8Da-4 (2018.12.8, Fukuoka).

  13. Junfeng Zhu, Keisuke Nakakubo, Hiroaki Yoshioka, Kinichi Morita, and Yuji Oki “Improvement of soft scattering filter at 260 / 280 nm for portable DNA sample evaluation,” in Flow Analysis XIV 2018 (2018.12, Bangkok, Thailand).

  14. Chacriya Malasuk, Keisuke Nakakubo, Hiroaki Yoshioka, Kinichi Morita, and Yuji Oki, “Novel 3D printing optical device based on silicone optical technology (SOT): application on flow injection analysis,” in Flow Analysis XIV 2018 (2018.12, Bangkok, Thailand).

  15. Abdul Nasir, Cong Chen, Yuya Mikami, Hiroaki Yoshioka, Naoya Nishimura, Nilesh Vasa, and Yuji Oki, “Lasing characteristics of pyrromethene597 doped fluorinated hyper branched polymer based microdisk laser fabricated by ink-jet printing method,” in 23rd Microoptics Conference (MOC2018), Poster-Deadline Paper PD-2 (2018.10.18, Taipei, Taiwan).

  16. Dongyang Liao, Yuya Mikami, Keisuke Nakakubo, Hiroaki Yoshioka, Kinichi Morita, Yuji Oki, “Development and release of ambient and portable sensor network based on silicone optical technology,” in The 71th Joint Conference of Electrical, Electronics and Information Engineers in Kyushu, 12-2A-04 (2018.9.28, Oita, Japan).

  17. K. T Abdul Nasir, Cong Chen, Yuya Mikami, Taku Takagishi, Hiroaki Yoshioka, Naoya Nishimura, and Yuji Oki, “Lasing characteristics of fluorinated hyper branched polymer based micro disk laser fabricated by ink-jet printing method,” in The 71th Joint Conference of Electrical, Electronics and Information Engineers in Kyushu, 12-2A-03 (2018.9.28, Oita, Japan).

  18. Hiroaki Yoshioka, Shintaro Mitsui, and Yuji Oki, “Lasing from Printable Organic-inorganic Microdisk Cavity with Mixed Doping of Laser Dye and ZnO,” in 44th European Conference on Optical Communication (ECOC 2018), paper Tu4A.1 (2018.9.25, Rome, Italy).

  19. Yuta Nakashima, Masaki Kounoura, Nao Watanabe, Sae Iwata, Syota Tsuru, Junfeng Zhu, Keisuke Nakakubo, Hiroyuki Ohashi, Kinichi Morita, Hiroaki Yoshioka, Yuji Oki, Satoru Kuhara, Kosuke Tashiro, and Yoshitaka Nakanishi, “Continuous monitoring of cell activity and culture conditions during cultivation using microplate reader with SOT spatial filter,” in World Congress On BIOSENSORS AND BIOELECTRONICS 2018, (2018.8, Chicago, USA).

  20. C. Malasuk, K. Nakakubo, S. Tsuru, H. Yoshioka, K. Morita, Y. Nakashima, and Y. Oki, “Silicone Optical Technology: Quasi Spatial Filter and Its Application for Multichannel Absorption Analysis,” in CLEO Pacific Rim Conference 2018, OSA Technical Digest (Optical Society of America, 2018), paper W3A.79 (2018.8.2, Hong Kong, China).

  21. Dongyang Liao, Yuya Mikami, Keisuke Nakakubo, Hiroaki Yoshioka, Kinichi Morita, and Yuji Oki, “Development of local and portable sensor network based on silicone optical technology and open architecture,” in The 7th Asia-Pacific Optical Sensors Conference (APOS), Tue_P31 (2018.5.29, Matsue, Japan).

  22. Junfeng Zhu, Keisuke Nakakubo, Yuya Mikami, Hiroaki Yoshioka, Kinichi Motita, Yuji Oki, “Development of novel type transparent/scattering fi lter for 260 / 280 nm with simple PDMS composition,” in The 7th Asia-Pacific Optical Sensors Conference (APOS), Tue_12 (2018.5.29, Matsue, Japan).

  23. T. Takagishi, H. Yoshioka, S. Mitsui, Y. Mikami, N. Nishimura, and Y. Oki, "Highly Transparent Organic Microdisk Cavity in Visible Range by the Ink-jet Printing Method," in Conference on Lasers and Electro-Optics, OSA Technical Digest (online) (Optical Society of America, 2018), paper JTh2A.81 (2018.5.17, San Jose, USA).

  24. K. Nakakubo, H. Nomada, H. Yoshioka, K. Morita, and Y. Oki, "On-demand lens fabrication by liquid phase molding with gallium and Polydimethylsiloxane," in Conference on Lasers and Electro-Optics, OSA Technical Digest (online) (Optical Society of America, 2018), paper STh1I.7 (2018.5.17, San Jose, USA).

  25. K. Nakakubo, J. Zhu, Y. Mikami, H. Yoshioka, K. Morita, and Y. Oki, "Novel spectroscopic transparent/scattering material for 260/280nm ultraviolet optical detection," in Conference on Lasers and Electro-Optics, OSA Technical Digest (online) (Optical Society of America, 2018), paper JTh2A.86 (2018.5.17, San Jose, USA).

  26. Junfeng Zhu, Keisuke Nakakubo, Hiroaki Yoshioka, Kinichi Morita, and Yuji Oki, “A compact optical system based on transparent scattering-filters in the specific UV wavelength range,” in Asianalysis XIV 2018 (2018.4, Jakarta).

  27. Keisuke Nakakubo, Chacriya Malasuk, Shota Tsuru, Kinichi Morita, Hiroaki Yoshioka, and Yuji Oki, “Multichannel Absorption Analysis based on Silicone Optical Technology quasi-spatial filter for micro-plate,” in Asianalysis XIV 2018 (2018.4, Jakarta).

  28. Hiroaki Yoshioka, and Yuji Oki, “Optically pumped organic microdisk laser fabricated by ink-jet printing method,” in 2018 Joint workshop btw SKKU and Kyushu University - Emerging materials and devices (2018.1.15, Fukuoka, Japan).

  29. Keisuke Nakakubo, Zhu JunFeng, Kinichi Morita , Hiroaki Yoshioka, and Yuji Oki, “Open Window Flow-in Type Chamber for Fluorescence Detection using Silicone Optical Technology,” in ICFIA 2017 (2017.9, St. Petersburg, Russia).

  30. Keisuke Nakakubo, Junfeng Zhu, Hiroaki Nomada, Kinichi Morita, Hiroaki Yoshioka, and Yuji Oki, “3D-Printed Lens Molds by Gallium Surface Control for On-Demand Fabrication of Optical Sensing System,” in ICFIA 2017 (2017.9, St. Petersburg, Russia).

  31. Junfeng Zhu, Keisuke Nakakubo, Hirokazu Higuchi, Hiroaki Yoshioka, Kinichi Morita, and Yuji Oki, “Simple and Cheap Spectroscopy System Specified for 260/280 nm using Silicone Optical Technology,” in ICFIA 2017 (2017.9, St. Petersburg, Russia).

  32. C. Chen, J. Li, S. Mitsui, S. Ryu, Y. Mikami, N. Nishimura, H. Yoshioka, and Y. Oki, “Investigation of Protein Adsorption for Biosensors Based on Ink-jet Printed Active Microdisk Resonator,” in 2017 European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference, (Optical Society of America, 2017), paper CH_5_5 (2017.6.28, Munich, Germany).

  33. Y. Mikami, S. Ryu, C. Chen, N. Nishimura, H. Yoshioka, and Y. Oki, “Water-like-refractive-index Microdisk Cavity by the Ink-jet Printing Method,” in 2017 European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference, (Optical Society of America, 2017), paper CE_7_5 (2017.6.26, Munich, Germany).

  34. H. Takeda, C. Chen, T. Komino, H. Yoshioka, Y. Oki, and C. Adachi, “THz Absorption Measurement and Calculation of Organic Thermally Activated Delayed Fluorescence Materials,” in 2017 European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference, (Optical Society of America, 2017), paper CC_5_2 (2017.6.26, Munich, Germany).

  35. K. Nakakubo, H. Nomada, H. Yoshioka, K. Morita, Y. Oki, “Liquid phase imprinting on Gallium/PDMS boundary for on-demand lens fabrication,” in 5th EOS Conference on Manufacturing and Testing of Optical Components (EOSMTOC 2017), (2017.6.26, Munich, Germany).

  36. Y. Oki, T. Ohe, H. Yoshioka, K. Kosaka, and T. Kanemaru, "6.3 eV DUV Generation Based on Microchip Nd:YAG Laser," in Laser Ignition Conference 2017, OSA Technical Digest (online) (Optical Society of America, 2017), paper LWA5.10 (2017.6.20-23, Bucharest, Romania).

  37. Hiroaki Yoshioka, Yuya Mikami, Soichiro Ryu, Shintaro Mitsui, Cong Chen, Naoya Nishimura, and Yuji Oki, “Silica-based Inorganic Microdisk Cavity by the Ink-jet Printing Method,” in Conference on Lasers and Electro-Optics, OSA Technical Digest (online) (Optical Society of America, 2017), paper JTu5A.119 (2017.5.16, San Jose, USA).

  38. Shintaro Mitsui, Cong Chen, Yuya Mikami, Hiroaki Yoshioka, Takeshi Komino, Naoya Nishimura, Yuji Oki, Chihaya Adachi, “Organic Light-emitting DIode Fabrication on the Ink-jet Printed Microdisk Cavity,” in The 69th Joint Conference of Electrical, Electronics and Information Engineers in Kyushu, 05-2A-03 (2016.9.30, Miyazaki, Japan).

  39. Jifeng Li, Shintaro Mitsui, Cong Chen, Soichiro Ryu, Yuya Mikami, Hiroaki Yoshioka, Naoya Nishimura, Yuji Oki, “Investigation on Compatibility between Ink-jet Printed Microdisk and Protein Analyte,” in The 69th Joint Conference of Electrical, Electronics and Information Engineers in Kyushu, 05-2A-02 (2016.9.30, Miyazaki, Japan).

  40. Soichiro Ryu, Cong Chen, Yuya Mikami, Jifeng Li, Shintaro Mitsui, Hiroaki Yoshioka, Naoya Nishimura, Yuji Oki, “Absorption Characteristics on Triazine Based Hyperbranched Polymer,” in The 69th Joint Conference of Electrical, Electronics and Information Engineers in Kyushu, 05-2A-01 (2016.9.30, Miyazaki, Japan).

  41. Hiroaki Yoshioka, Cong Chen, Soichiro Ryu, Jifeng Li, Masaaki Ozawa, and Yuji Oki, “Ultra-low Threshold Lasing at 0.8 μm from Organic Microdisk Cavity by the Ink-jet Printing Method,” in Conference on Lasers and Electro-Optics, OSA Technical Digest (2016) (Optical Society of America, 2016), paper JTh2A.81 (2016.6.9, San Jose, USA).

  42. Cong Chen, Jifeng Li, Soichiro Ryu, Hiroaki Yoshioka, Masaaki Ozawa, and Yuji Oki, “Spectroscopic behavior in whispering-gallery modes by edge formation of printed microdisk lasers,” in SPIE Micro+Nano Materials, Devices, and Applications 2015 Conference, 9668-119 (2015.12.9, Sydney, Australia).

  43. Hirokazu Higuchi, Hiroaki Nomada, Hiroaki Yoshioka, Kinichi Morita, and Yuji Oki, “Absorbance-meter constructed by PDMS,” in 20th Microoptics Conference (MOC’15), H57 (2015.10.27, Fukuoka, Japan).

  44. Mitsuhiro Nakano, Noboru Hirakawa, Hiroaki Yoshioka, and Yuji Oki, “On-site three-dimensional fabrication of organic optical system with micro-dispensing method,” in 3nd EOS Conference on Optofluidics (EOSOF 2015), (2015.6.23, Munich, Germany).

  45. S. Ryu, H. Yoshioka, C. Chen, K. Yasui, and Y. Oki, “High-Q Printable Polymer Microdisk without Etching,” in 2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference, (Optical Society of America, 2015), paper CE_2_1 (2015.6.21, Munich, Germany).

  46. Hiroaki Yoshioka, Noboru Hirakawa, Mitsuhiro Nakano, and Yuji Oki, “On-Demand Fabrication of Micro-Wired Rods and Nano-Coupling Control for 3D Polymeric Optical System,” in CLEO: 2015, OSA Technical Digest (online) (Optical Society of America, 2015), paper STh4G.8 (2015.5.14, San Jose, USA).

  47. Nomada Hiroaki Yoshioka Hiroaki, Yang Fan, Morita Kinichi, and Oki Yuji, “Labo-On-Tablet,” in PITTCON 2015, 1450-1 (2015.3.10, New Orleans, USA).

  48. Cong Chen, Soichiro Ryu, Hiroaki Yoshioka, Kei Yasui, and Yuji Oki, “Low-threshold lasing from organic and polymeric microdisk printed by room temperature atmosphere ink-jet technique,” in SPIE. Photonics West OPTO 2015, 9360-6 (2015.2.9, San Francisco, USA).

  49. Mitsuhiro Nakano, Noboru Hirakawa, Hiroaki Yoshioka, and Yuji Oki, “Micro MOPA System Fabrication by Micro-dispensing Method,” in 19th International Conference on Flow Injection Analysis (19th ICFIA), 1YO7 (2014.11.30, Fukuoka, Japan).

  50. Noboru Hirakawa, Mitsuhiro Nakano, Hiroaki Yoshioka, and Yuji Oki, “Lasing with Whispering-Gallery Modes from On-Site Microrods Device Fabricated by Micro Dispensing Technique,” in 19th International Conference on Flow Injection Analysis (19th ICFIA), 1YO6 (2014.11.30, Fukuoka, Japan).

  51. Fan Yang, Hiroaki Yoshioka, Kinichi Morita, and Yuji Oki, “A New Design of PDMS Monolithic Optical System as “Bit-Oriented Optical Fabrication”,” in 19th International Conference on Flow Injection Analysis (19th ICFIA), 1YO5 (2014.11.30, Fukuoka, Japan).

  52. Mitsuhiro Nakano, Noboru Hirakawa, Hiroaki Yoshioka, and Yuji Oki, “Printed Micro-waveguide MOPA system,” in The 67th Joint Conference of Electrical, Electronics and Information Engineers in Kyushu, 07-2P-14 (2014.9.19, Kagoshima, Japan).

  53. Cong Chen, Tomoya Ota, Soichiro Ryu, Hiroaki Yoshioka, Kei Yasui, Daisuke Maeda, and Yuji Oki, “Rapid microdisk printing in room temperature atmosphere,” in The 67th Joint Conference of Electrical, Electronics and Information Engineers in Kyushu, 07-2P-13 (2014.9.19, Kagoshima, Japan).

  54. Fan Yang, Hiroaki Yoshioka, and Yuji Oki, “A monolithic PDMS spectroscopic analyzer,” in The 66th Joint Conference of Electrical and Electronics Engineers in Kyushu, 03-1P-09 (2013.9.24, Kumamoto, Japan).

  55. Noboru Hirakawa, Hiroyuki Kubota, Hiroaki Yoshioka, Noriyasu Tarumi, Yoshio Kagebayashi, and Yuji Oki, “Micro-dispensing for three-dimensional direct fabrication of laser waveguides,” in The 10th Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR 2013), WS3-3 (2013.7.3, Kyoto, Japan).

  56. Hiroaki Yoshioka, Yusuke Itoh, Ayumu Kiyomori, and Yuji Oki, “Degradation self-recovery and durability extension on solid-state dye laser in blue region,” in CLEO: 2013, OSA Technical Digest (online) (Optical Society of America, 2013), paper CF1I.5 (2013.6.14, San Jose, USA).

  57. Tomoya Ota, Hiroaki Yoshioka, Kei Yasui, Daisuke Maeda, and Yuji Oki, “Printed Fabrication of Microdisk at Room Temperature,” in 2nd EOS Conference on Optofluidics (EOSOF 2013), 1569714735 (2013.5.14, Munich, Germany).

  58. Kota Kuwamitsu, Hiroaki Yoshioka, Nahoko Naruishi, Yoshihide Tanaka, and Yuji Oki, “Print-like Fabrication of Laser Systems in PDMS Flowchip,” in 2nd EOS Conference on Optofluidics (EOSOF 2013), 1569714773_004 (2013.5.14, Munich, Germany).

  59. Hiroaki Yoshioka, Yuji Oki, “Nd:YAG/Cr:GSGG passively Q-switched compact DPSS laser with flexure-frame structure,” in 1st. Laser Ignition Conference 2013, LIC4-3 (2013.4.24, Yokohama, Japan).

  60. Hiroaki Yoshioka, Yusuke Itoh, Ayumu Kiyomori, and Yuji Oki, “Degradation-recoverable solid-state dye laser with fluorene-based chromophore,” in 2013 International Symposium on Information Science and Electrical Engineering, (2013.1.11, Fukuoka, Japan).

  61. Hiroaki Yoshioka, Wataru Iwasaki, Yukihiro Yamashita, Nobuo Miyadera, Kei Yasui, Daisuke Maeda, and Yuji Oki, “Nd3+-TFA:HPDA Polymeric Microchip Laser,” in CLEO: Science and Innovations, OSA Technical Digest (online) (Optical Society of America, 2012), paper CF1A.3 (2012.5.22, San Jose, USA).

  62. Zhikun Wu, Hiroaki Yoshioka, Wataru Iwasaki, Yukihiro Yamashita, Nobuo Miyadera, Kei Yasui, Daisuke Maeda, Yuji Oki, “Investigations of Nd3+-TFA:HPDA polymeric microchip laser for laser diode pumping,” in The 65th Joint Conference of Electrical and Electronics Engineers in Kyushu, 01-2A-02 (2012.9.25, Nagasaki, Japan).

  63. Tomoya Ota, Tokuma Nakamichi, Yu Yang, Hiroaki Yoshioka, Hirofumi Watanebe, Masayuki Yahiro, Masanao Era, and Yuji Oki, “Development of organic laser system on film by fabricating waveguides and wavelength detectors II,” in The 65th Joint Conference of Electrical and Electronics Engineers in Kyushu, 01-2A-01 (2012.9.25, Nagasaki, Japan).

  64. Hiroaki Yoshioka, Yu Yang, Hirofumi Watanabe, and Yuji Oki, “Extended Durability with Degradation Recovery by P597:PDMS/PTFEMA DFB Lasers,” in 12th International Conference on Organic Nonlinear optics and international Conference on Organic Photonics and Electronics (2011.9.8, Dublin, Ireland).

  65. Kota Kuwamitsu, Hiroaki Yoshioka, Ryo Goto, Hirofumi Watanabe, Nahoko Naruishi, Yoshihide Tanaka, and Yuji Oki, “Integration of Distributed-feedback (DFB) Solid-state Dye Lasers with Optical Pumping Systems for PDMS Micro Biochemistry Chips,” in Proceedings of the International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim 2011, (Optical Society of America, 2011), paper C810 (2011.8.30, Sydney, Australia).

  66. Hiroaki Yoshioka, Ryo Goto, Soichiro Omi, Yu Yang, and Yuji Oki, “Degradation Recoverable DFB Lasers Based on P597:PDMS/PTFEMA,” in CLEO/Europe and EQEC 2011 Conference Digest, OSA Technical Digest (CD) (Optical Society of America, 2011), paper CE7_1 (2011.5.26, Munich, Germany).

  67. Tokuma Nakamichi, Yu Yang, Soichiro Omi, Hiroaki Yoshioka, Hirofumi Watanabe, Masayuki Yahiro, Masanao Era, and Yuji Oki, “Monochromatic Organic Photodiodes Made by Stackable Ink-jet Fabrication for Integrated Laser Chips,” in CLEO:2011 - Laser Applications to Photonic Applications, OSA Technical Digest (CD) (Optical Society of America, 2011), paper CWF6 (2011.5.4, Baltimore, America).

  68. Hiroaki Yoshioka, Ryo Goto, Soichiro Omi, Yu Yang, and Yuji Oki, “Solid-State Polymer Waveguide DFB Laser with Self Dye-Circulatory Function,” in CLEO:2011 - Laser Applications to Photonic Applications, OSA Technical Digest (CD) (Optical Society of America, 2011), paper JTuI78 (2011.5.3, Baltimore, America).

  69. Soichiro Omi, Hiroyuki Kubota, Hiroaki Yoshioka, Hirofumi Watanabe, and Yuji Oki, “Direct Laser fabrication on Polymeric Optical Fiber and Its Sensor Application,” in CLEO:2011 - Laser Applications to Photonic Applications, OSA Technical Digest (CD) (Optical Society of America, 2011), paper CTuY5 (2011.5.3, Baltimore, America).

  70. Tokuma Nakamichi, Yu Yang, Hiroaki Yoshioka, Soichiro Omi, Hirofumi Watanabe, and Yuji Oki, “Printable DFB Laser and Wavelength Monitor Systems by On Demand Fabrication on Flexible Films,” in CLEO:2011 - Laser Applications to Photonic Applications, OSA Technical Digest (CD) (Optical Society of America, 2011), paper CTuM7 (2011.5.3, Baltimore, America).

  71. Hiroaki Yoshioka, Wang Weibo, Kota Kuwamitsu, Wataru Iwasaki, Yukihiko Yamashita, Nobuo Miyadera, and Yuji Oki, “High Efficient Laser Action by Nd3+ Complex,” in CLEO:2011 - Laser Applications to Photonic Applications, OSA Technical Digest (CD) (Optical Society of America, 2011), paper CMP5 (2011.5.2, Baltimore, America).

  72. Hiroaki Yoshioka, Wang Weibo, Kota Kuwamitsu, Wataru Iwasaki, Yukihiko Yamashita, Nobuo Miyadera and Yuji Oki, “Characters of Nd-Complex-doped Polymer Laser Based on Liquid,” in KJF International Conference on Organic Materials for Electronics and Photonics 2010, PB097 (2010.8.24, Kita-kyushu, Japan).

  73. Yu Yang, Tokuma Nakamichi, Hiroaki Yoshioka, Soichiro Omi, Ryo Goto, Hirofumi Watanabe, and Yuji Oki, “Intensity Sensitive Organic Photodiodes Patterned by Inkjet Method,” in KJF International Conference on Organic Materials for Electronics and Photonics 2010, PA034 (2010.8.23, Kita-kyushu, Japan).

  74. Hiroaki Yoshioka, Shinki Nakamura, Takayo Ogawa, and Satoshi Wada, “Dual-Wavelength Mode-Locked Yb:YAG Ceramic Laser in Single Cavity,” in Conference on Lasers and Electro-Optics, OSA Technical Digest (CD) (Optical Society of America, 2010), paper CTuV5 (2010.5.18, San Jose, USA).

  75. Soichiro Omi, Yu Yang, Hiroaki Yoshioka, Hirofumi Watanabe and Yuji Oki, “Planer & Line Waveguides Drawing Fabrication for Multiple-Color & Solid-State DFB Dye Laser Array,” in the proceedings of The 7th Asia Pacific Laser Symposium (APLS2010), paper Wd-R2-3 (2010.5.12, Jeju island, Korea).

  76. Hiroaki Yoshioka, Shinki Nakamura, Takayo Ogawa, and Satoshi Wada, “233-fs mode-locked Yb:YAG ceramic laser,” in Conference on Lasers and Electro-Optics/Pacific Rim 2009, (Optical Society of America, 2009), paper WF1_3 (2009.9.2, Shanghai, China).

  77. Hiroaki Yoshioka, Shinki Nakamura, Takayo Ogawa, and Satoshi Wada, “Diode-Pumped Mode-Locked Yb:YAG Ceramic Laser,” in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, OSA Technical Digest (CD) (Optical Society of America, 2009), paper JThE57 (2009.6.4, Baltimore, America).

  78. Shinki Nakamura, Hiroaki Yoshioka, Takayo Ogawa, and Satoshi Wada, “Efficient Broadly Tunable Yb:YAG Ceramic Laser at Room Temperature,” in Advanced Solid-State Photonics, OSA Technical Digest Series (CD) (Optical Society of America, 2009), paper WB9 (2009.2.4, Denver, America).

  79. Hiroaki Yoshioka, Shinki Nakamura, Yu Matsubara, Takayo Ogawa, and Satoshi Wada, “Efficient Tunable Diode-Pumped Yb:YAG Ceramic Laser,” in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, OSA Technical Digest (CD) (Optical Society of America, 2008), paper JTuA9 (2008.5.6, San Jose, USA).

  80. Shinki Nakamura, Hiroaki Yoshioka, Yu Matsubara, Takayo Ogawa, and Satoshi Wada, “6.8-W High Efficiency Yb:YAG Ceramic Laser at Room Temperature,” in the proceedings of The 6th Asia Pacific Laser Symposium (APLS2008), paper 31Bp6 (2008.1.30-2008.2.1, Nagoya, Japan).

  81. Shinki Nakamura, Hiroaki Yoshioka, Yu Matsubara, Takayo Ogawa, and Satoshi Wada, “6.9-W Efficient Tunable Yb:YAG Ceramic Laser at Room Temperature,” in Advanced Solid-State Photonics, OSA Technical Digest Series (CD) (Optical Society of America, 2008), paper MC16 (2008.1.28, Nara, Japan).

Invited talks (Int'l Conf.)

  1. Hiroaki Yoshioka, Yuya Mikami, Taku Takagishi, Naoya Nishimura, and Yuji Oki, “Additive fabrication of silica 3D structure for WGM optical micro cavities,” in 6th Korea-Japan Joint Symposium on Advanced Solar Cells 2019 - 3rd International Symposium on Energy Research and Application, (2019.2.13, Nikko, Japan).

Awards

  1. 40th Laser Society of Japan Encouragement Award

  2. 2010 IEEE Fukuoka Branch Student Research Encouragement Award (10th)

Features by media

  1. Media: Samachar Central
    Date: 2021.6.15
    Tittle: Researchers create switchable mirrors from liquid metal

  2. Media: PHYS.ORG
    Date: 2021.6.14
    Tittle: Researchers create switchable mirrors from liquid metal

  3. Media: Info Dig Site
    Date: 2021.6.14
    Tittle: Researchers create switchable mirrors from liquid metal

  4. Media: FUNTiTECH
    Date: 2021.6.14
    Tittle: Researchers create switchable mirrors from liquid metal

  5. Media: ScienceDialy
    Date: 2021.6.14
    Tittle: Switchable mirrors from liquid metal

  6. Media: EurekAlert!
    Date: 2021.6.14
    Tittle: Researchers create switchable mirrors from liquid metal

  7. Media: News Release - Optical Society of America
    Date: 2021.6.14
    Tittle: Researchers Create Switchable Mirrors from Liquid Metal

  8. Media: 捜狐

Date: 2021年2月7日

Tittle: 日本开新型墨打印方法打印生物用微激光器 什么是微激光器?

  1. Media: DoveMed
    Date:
    2021.2.5
    Tittle:
    New Ink Jet Approach Offers Simple Way To Print Microdisk Lasers For Biosensing

  2. Media: Scienmag

Date: 2021年2月3日

記事タイトル:New Ink Jet Approach Offers Simple Way To Print Microdisk Lasers For Biosensing

  1. Media: SCIENCE Codex

Date: 2021年2月3日

Tittle: New ink jet approach offers simple way to print microdisk lasers for biosensing

  1. Media: ScienceDialy
    Date:
    2021.2.3
    Tittle:
    New ink jet approach offers simple way to print microdisk lasers for biosensing

  2. Media: PHYS.ORG
    Date:
    2021.2.3
    Tittle:
    New ink jet approach offers simple way to print microdisk lasers for biosensing

  3. Media: EurekAlert!
    Date:
    2021.2.3
    Tittle:
    New ink jet approach offers simple way to print microdisk lasers for biosensing

  4. Media: News Release - Optical Society of America
    Date:
    2021.2.3
    Tittle:
    New Ink Jet Approach Offers Simple Way to Print Microdisk Lasers for Biosensing

  5. Media: Laser Focus World (p. 37)
    Date:
    2009.7.1
    Tittle:
    Yb:YAG ceramic laser produces modelocked pulses

Funding

  1. JST-CREST (JPMJCR20T4).
    Research project: Development of self-organized topological organic microresonators
    Principal Investigator: Yohei Yamamoto, Co-Investigator: Hiroaki Yoshioka
    Nov. 2020 – Mar. 2026

  2. Grant-in-Aid for Fostering Joint International Research (A), Japan Society for the Promotion of Science (JSPS) KAKENHI (JP19KK0379).
    Research project: Research for integration on printing microlasers and quantum photonic circuits using hybrid fabrications
    Principal Investigator: Hiroaki Yoshioka
    Apr. 2020 – Mar. 2023

  3. 2019 Startup support grant, ISEE, Kyushu University.
    Principal Investigator: Hiroaki Yoshioka
    Nov. 2019 – Mar. 2020

  4. The 20th Exchange Research Grant, Marubun Research Promotion Fundation.
    Research project: Structural evaluation of single-mode selection device for microdisk lasers by printing technique
    Principal Investigator: Hiroaki Yoshioka
    Apr. 2019 – Mar. 2020

  5. Grant-in-Aid for Scientific Research (C), Japan Society for the Promotion of Science (JSPS) KAKENHI (JP16K04980).
    Research project: Study on Spectroscopic Feature of Hybrid Randam Scatter Medium
    Principal Investigator: Yuji Oki, Co-Investigator: Hiroaki Yoshioka
    Apr. 2019 – Mar. 2022

  6. 2018 Startup support grant, ISEE, Kyushu University.
    Principal Investigator: Naoya Tate, Co-Investigator: Hiroaki Yoshioka
    Oct. 2018 – Mar. 2019

  7. 2018 Progress 100 (Global Leadership Training for Young Researchers), Kyushu University.
    Principal Investigator: Hiroaki Yoshioka
    Aug. 2018 – Mar. 2020

  8. Grant-in-Aid for Young Scientists, Japan Society for the Promotion of Science (JSPS) KAKENHI (JP18K14149).
    Research project: Research of silica based optical microdisk cavity of organic-inorganic nanohybrid structure
    Principal Investigator: Hiroaki Yoshioka
    Apr. 2018 – Mar. 2022

  9. 2016 Startup support grant, ISEE, Kyushu University.
    Principal Investigator: Hiroaki Yoshioka
    Jan. 2017 – Mar. 2017

  10. Grant-in-Aid for Young Scientists (B), Japan Society for the Promotion of Science (JSPS) KAKENHI (JP16K17531).
    Research project: Reduction of lasing threshold for continuous excitation pumping of organic microdisk cavity
    Principal Investigator: Hiroaki Yoshioka
    Apr. 2016 – Mar. 2018

  11. Grant-in-Aid for Scientific Research (C), Japan Society for the Promotion of Science (JSPS) KAKENHI (JP16K04980).
    Research project: Printable Microdisk Fabrication for Trillion Sensing Network
    Principal Investigator: Yuji Oki, Co-Investigator: Hiroaki Yoshioka
    Apr. 2016 – Mar. 2019

  12. Grant-in-Aid for JSPS Research Fellow, Japan Society for the Promotion of Science (JSPS) KAKENHI (JP11J03687).
    Research project: Research on development and application of solid-state dye laser with novel structure by silicone framework
    Principal Investigator: Hiroaki Yoshioka
    Apr. 2011 – Mar. 2013