TALKS
Invited Talks
Contributed Talks
Seminars
Posters
Jump to: 2021, 2018, 2017, 2016, 2015, 2014 and prior
2021
(Back to Top)
Enhancing and Enabling Single Crystal Growth of Group-III and Novel Nitrides
S. Pimputkar
American Conference on Crystal Growth and Epitaxy (ACCGE-22), Virtual (USA)
Pushing the Boundary on Nitride-Synthesis Equipment Technology
S. Pimputkar
American Conference on Crystal Growth and Epitaxy (ACCGE-22), Virtual (USA)
2018
(Back to Top)
Single Crystal Growth of Nitrides using the Ammonothermal Method
S. Pimputkar
Lehigh Valley Section of American Chemical Society, Bethlehem, PA (USA)
Ammonothermal Growth of Bulk GaN Crystals
S. Pimputkar
2018 SPIE Optics and Photonics, San Diego, CA (USA)
Lighting up the Blue LED: A Story of Perseverance
S. Pimputkar
MatCamp @ Lehigh, Bethlehem (USA)
Bulk Single Crystal Gallium Nitride Growth
S. Pimputkar
IEEE SSCS & Local EDS Chapter Meeting, Bethlehem, PA (USA)
2017
(Back to Top)
Ammonothermal Growth of Bulk GaN Single Crystals
S. Pimputkar
XIX International Workshop on The Physics of Semiconductor Devices (IWPSD 2017), New Delhi (India)
Progress in GaN substrates for lighting and beyond
S. Pimputkar
IEEE Photonics Conference (IPC) 2017, Orlando (U.S.A.)
Technology of Ammonothermal Growth for Gallium Nitride
S. Pimputkar
International Workshop of Crystal Growth Technology (IWCGT) 7, Potsdam (Germany)
2016
(Back to Top)
Advances in Basic Ammonothermal Growth of Bulk Gallium Nitride Crystals
S. Pimputkar, S. Griffiths, T. F. Malkowski, S. Suihkonen, J. S. Speck, and S. Nakamura
Global Forum on Advanced Materials and Technologies for Sustainable Development (GFMAT) 2016, Toronto (Canada)
Improving growth rate and transparency of basic ammonothermal GaN crystals
S. Pimputkar, J. S. Speck, and S. Nakamura
Light Emitting Devices and Their Applications 2016 (LEDIA’16), Yokohama (Japan)
Prospects for large-area bulk GaN substrates
S. Pimputkar, J. S. Speck, and S. Nakamura
Pathway to Vertical GaN (DOE Roadmapping Meeting), Davis (U.S.A.)
2015
(Back to Top)
Recent advances in basic ammonothermal growth of gallium nitride
S. Pimputkar, S. Griffiths, T. F. Malkowski, S. Suihkonen, J. S. Speck, and S. Nakamura
EMN Collaborative Conference on Crystal Growth (3CG) 2015, Hong Kong (China)
(KEYNOTE ADDRESS) Overview of the history and development of blue, green and white LEDs and LDs
S. Pimputkar
15th International Meeting on Information Display (IMID), Daegu (South Korea)
Basic ammonothermal growth of GaN and its growth in silver lined autoclaves
S. Pimputkar, S. Kawabata, J. S. Speck, and S. Nakamura
20th American Conference on Crystal Growth and Epitaxy (ACCGE-20), Big Sky (U.S.A.)
2014 and prior
(Back to Top)
Basic ammonothermal growth of GaN and its growth in silver lined autoclaves
S. Pimputkar, S. Kawabata, J. S. Speck, and S. Nakamura
International Symposium on Crystal Growth and Crystal Technology (ISCGCT) 2014, Wonju (South Korea), 2014
Basic ammonothermal growth of GaN in silver lined autoclaves
S. Pimputkar, S. Kawabata, J. S. Speck, and S. Nakamura
Congress and General Assembly of the International Union on Crystallography (IUCr) 2014, Montréal (Canada), 2014
Progress in basic ammonothermal growth of GaN
S. Pimputkar, P. Von Dollen, S. Kawabata, K. Kubota, J. S. Speck, and S. Nakamura
Japanese Society of Applied Physics – Material Research Society Joint Symphosia (JSAP–MRS), Kyoto (Japan), 2013
Bulk single crystal growth of gallium nitride
S. Pimputkar, B. Bryant, P. Von Dollen, T. F. Malkowski, S. Griffiths, A. Espenlaub, D. Pagenkopf, J. S. Speck, and S. Nakamura
Materials Research Outreach Symposium (MROP) 2013, Santa Barbara (U.S.A.), 2013
Bulk GaN growth on GaN seeds of varying off–orientations from m–plane in supercritical basic ammonia
S. Pimputkar, S. Kawabata, B. Bryant, J. S. Speck, and S. Nakamura
International Workshop on Nitride semiconductors (IWN) 10, Tampa (U.S.A.), 2010
Jump to: 2020, 2019, 2017, 2016, 2015, 2014 and prior
2020
Thermodynamic Modeling of Supercritical Ammonia Solutions under Ammonothermal Crystal Growth Conditions
S. Pimputkar
WCCM XIV – ECCOMAS 2020, Virtual
Enhancing Student Appreciation for Materials Science: Integration of Domain-specific Project-based Learning in an Introductory Materials Science Course
S. Jedlicka, G. Skutches, S. Pimputkar
American Society for Engineering Education (ASEE) 2020, Virtual
2019
Integration of Peer Communication Fellows into Introductory Materials Science Courses
S. Jedlicka, G. Skutches, S. Pimputkar
American Society for Engineering Education (ASEE) 2019, Tampa, FL (USA)
Integration of TRAC Fellows into a Large Materials Science Course
G. Skutches, S. Jedlicka, and S. Pimputkar
Symposium on Teaching & Learning 2019, Bethlehem, PA (USA)
(Back to Top)
2017
(Back to Top)
Effect of Internal Fluid Temperatures on Gallium Nitride Growth in Supercritical Ammonia-Sodium Solutions
S. Pimputkar, S. Griffiths, J. Kearns, T.F. Malkowski, M.F. Doherty, J.S. Speck, and S. Nakamura
10th International Workshop on Bulk Nitride Semiconductors (IWBNS-X), Espoo (Finland)
Basic Ammonothermal Growth of bulk GaN in Molybdenum Capsules
S. Pimputkar, J. S. Speck, and S. Nakamura
21st American Conference on Crystal Growth and Epitaxy (ACCGE-21), Santa Fe (U.S.A.)
2016
(Back to Top)
Sub-bandgap optical absorption of bulk GaN crystals
S. Pimputkar, S. Suihkonen, M. Imade, Y. Mori, J. S. Speck, and S. Nakamura
International Workshop on Nitride Semiconductors (IWN) 2016, Tampa (U.S.A.)
Decomposition of Ammonia under Ammonothermal Conditions
S. Pimputkar
1st Ammonothermal Summer School, Erlangen (Germany)
2015
(Back to Top)
(SCENE SETTER) Decomposition and modeling of supercritical ammonia solutions with applicability towards ammonothermal conditions
S. Pimputkar
International Workshop on Bulk Nitride Semiconductors (IWBNS) 9, Wonju (South Korea)
Stability of materials in ammonothermal environments and use of a molybdenum capsule in the growth of GaN
S. Pimputkar, S. Griffiths, T. F. Malkowski, A. Espenlaub, S. Suihkonen, J. S. Speck, and S. Nakamura
International Workshop on Bulk Nitride Semiconductors (IWBNS) 9, Wonju (South Korea)
2014 and prior
(Back to Top)
Basic ammonothermal growth of GaN in silver lined autoclaves
S. Pimputkar, S. Kawabata, J. S. Speck, and S. Nakamura
Electronic Materials Conference (EMC) 56, Santa Barbara (U.S.A.), 2014
Progress in basic ammonothermal growth of GaN
S. Pimputkar, P. Von Dollen, S. Kawabata, K. Kubota, J. S. Speck, and S. Nakamura
International Workshop on Bulk Nitride Semiconductors (IWBNS) 8, Bavaria (Germany), 2013
Ammonothermal growth of GaN
S. Pimputkar, P. Von Dollen, S. Kawabata, K. Kubota, J. S. Speck, and S. Nakamura
KAUST-UCSB-NSF Workshop on Solid-State Lighting, Thuwal (Saudi Arabia), 2012
Improved growth rates and transparency of ammonothermal GaN crystals
S. Pimputkar, J. S. Speck and S. Nakamura
International Conference on Nitride Semiconductors (ICNS) 9, Glasgow (Scotland), 2011
Bulk GaN growth on GaN seeds of varying orientations in supercritical basic ammonia
S. Pimputkar, S. Kawabata, J. S. Speck, and S. Nakamura
Electronic Materials Conference (EMC) 53, Santa Barbara (U.S.A.), 2011
Bulk GaN growth on GaN seeds of varying orientations in supercritical basic ammonia
S. Pimputkar, S. Kawabata, J. S. Speck, and S. Nakamura
International Workshop on Bulk Nitride Semiconductors (IWBNS) 7, Koyasan (Japan), 2011
Bulk GaN growth on highly vicinal m–plane GaN seeds in supercritical basic ammonia with application towards seed coarsening
S. Pimputkar, S. Kawabata, J. S. Speck, and S. Nakamura
International Symposium on Growth of III–Nitrides (ISGN) 3, Montpellier (France), 2010
Plane dependent growth of GaN by the ammonothermal method
M. Saito, D. S. Kamber, S. Pimputkar, T. J. Baker, K. Fujito, T. Hashimoto, S. P. DenBaars, J. S. Speck, and S. Nakamura
International Workshop on Bulk Nitride Semiconductors (IWBNS) 6, Galindia (Poland), 2009
Jump to: 2021,2018, 2016, 2015, 2014 and prior
2021
(Back to Top)
Bulk Synthesis of Group-III and Novel Nitrides
S. Pimputkar
Air Force Research Laboratory (AFRL) – Materials & Manufacturing Directorate, Virtual (USA)
2018
(Back to Top)
Bulk Single Crystal Gallium Nitride Growth
S. Pimputkar
Materials Dept. Seminar at Colorado School of Mines, Golden, CO (USA)
2016
(Back to Top)
Lessons Learned – from Research and Development of bulk GaN Crystals
S. Pimputkar
Corporate Seminar (Takatori Corp.), Nara (Japan)
2015
(Back to Top)
Bulk single crystal growth of gallium nitride
S. Pimputkar, P. Von Dollen, S. Griffiths, T. F. Malkowski, J. S. Speck, and S. Nakamura
Hong Kong University of Science and Technology (HKUST), Hong Kong (China)
2014 and prior
(Back to Top)
Sodium flux growth of GaN
P. Von Dollen, S. Pimputkar, A. Espenlaub, S. Nakamura, and J. S. Speck
King Abdulaziz City for Science and Technology (KACST), Saudi Arabia, 2014
Basic ammonothermal growth of bulk GaN crystals
S. Pimputkar, P. Von Dollen, T. Malkwoski, S. Griffiths, A. Espenlaub, S. Moon, J. S. Speck, S. Nakamura
Nitrides Seminar, Materials Department (UCSB), 2014
Bulk GaN growth on GaN seeds of varying off-orientations from m-plane in supercritical basic ammonia
S. Pimputkar
Nitrides Seminar, Materials Department (UCSB), 2010
Bulk GaN crystal growth
S. Pimputkar
Nitrides Seminar, Materials Department (UCSB), 2009
H2 generation using III-nitrides: an overview
S. Pimputkar
Nitrides Seminar, Materials Department (UCSB), 2008
Jump to: 2014 and prior
2014 and prior
(Back to Top)
Progress in Bulk GaN Growth
S. Pimputkar, S. Kawabata, B. Bryant, P. Von Dollen, J. S. Speck, and S. Nakamura
Engineering Insights, College of Engineering (UCSB), 2011
Hydrogen generation using InGaN, water and sunlight
S. Pimputkar, M. Iza, S. DenBaars, C. G. Van De Walle, U. Mishra, and S. Nakamura
Solid-State Lighting and Display Center, Annual Review (UCSB), 2007
Jump to: 2014 and prior
2014 and prior
(Back to Top)
(RADIO INTERVIEW) Shocking Ideas: Blue LEDs
S. Pimputkar
Big Picture Science, 2014