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The Team


Michal Lipson

Michal Lipson, Given Foundation Professor of Engineering

Michal Lipson is a the Given Foundation Professor of Engineering at the School of Electrical and Computer Engineering at Cornell University, Ithaca, NY.  She completed her B.S., M.S., and Ph.D. degrees in Physics at the Technion in 1998.  Following a Postdoctoral position at MIT in the Materials Science Department from 1998 to 2001, she joined the School of Electrical and Computer Engineering at Cornell University.  Lipson was one of the main pioneers in the field of silicon photonics and is the inventor of several   of the critical building blocks in the field including the GHz silicon modulator.  She holds over 20 patents and is the author of over 200 technical papers.  Prof. Lipson held several leadership positions in the scientific community including, IEEE Photonics society board of directors member, co-organized numerous symposia and sessions in OSA conferences.  She chaired and served on numerous committees including the Micro and Nanophotonics Subcommittee of CLEO, which she chaired 2006-2009.  She has served as a topical editor (integrated photonics) for Optics Letters and served as a guest editor for IEEE Journal of Selected Topics of Electronics.  She is currently serving on the board of directors for two international photonics centers, two start up companies and on the Rice ECE Advancement Committee.  She is a co-founder of PicoLuz, a company specializing in nonlinear silicon photonic components.  Professor Lipson's honors and awards include the MacArthur Fellow, Blavatnik Award, IBM Faculty Award, and the NSF Early Career Award.  She is a fellow of OSA and IEEE.  In 2014, she was named by Thomson Reuters as a top 1% highly cited researcher in the field of Physics.      Email Michal Lipson  

If you would like to get into touch with Prof. Lipson (e.g. set up meeting, invitation for a talk, recommendation letters, etc.) we suggest you contact her by email and cc Ms. Kim Cotton at

Prof. Lipson's CV

Office Staff

Kim Cotton

Kim Cotton, Administrative Assistant

Kim manages the administrative needs of the Cornell Nanophotonics Group's staff and students.  She also coordinates Professor Lipson's schedule.  All inquires regarding Ph.D. positions in the Cornell Nanophotonics Group should be direct to Kim.  Email Kim

Academic Staff

Jaime Cardenas, Research Associate

Jaime Cardenas, Research Associate

Jaime earned his Ph.D. from the University of Alabama in Huntsville in Optical Science and Engineering. His research was in single air interface bends and waveguide microcantilevers. After two years as a process engineer, and three years as a Postdoctoral researcher in the Nanophotonics group, Jaime is now research associate in the Cornell Nanophotonics Group. Email Jaime Cardenas.

Postdoctoral Associates

Raphael St-Gelais

Raphael St-Gelais

Raphael received the B. Eng. (2007) and Ph.D. (2012) degrees in engineering physics from Polytechnique Montreal (Montreal, QC, Canada). In 2007, he was an engineering intern with Dalsa Semiconductor (Bromont, QC, Canada), before joinging the Microphotonics Labororatory (Polytechnique Montreal) in 2008 for his graduate studies. He joined the Cornell Nanophotonics Group as a postdoctoral associate in 2013. His research interests include optical microelectromechanical systems, optical sensor, mid-infrared integrated optics, thermal emitters, and nanoscale thermal transport. Email Raphael St-Gelais.


Felippe Barbosa

Felippe received his Bachelor degree in Physics (2006) from University of Brasilia (UnB) and both the M.Sc. (2009) and PhD (2013) in Physics from the University of São Paulo (USP) in Brazil, working with quantum optics and quantum information with continous variable using optical paramectric oscillators. He also spent five months of his PhD at the University of Paris VI in France working with quantum optics. He also worked as a postdoctoral associate from 2013 to the middle of 2014 at University of Campinas (Unicamp). He joined the Cornell Nanophotonics Group as a post-doctoral associate in the middle of 2014 and his research interests include quantum optics, quantum information science, optomechanical resonators and quantum measurement. His other interests includes movies,reading, especially literature and history, hiking and practicing sports in general. Email Felippe Barbosa.


Mohammad Amin Tadayon

Amin received his B.S. (ME, 2004), M.S. (ME, 2007) and Ph.D. (BME, 2014) degree respectively from Iran University of Science and Technology, Sharif University of Technology, and University of Minnesota. From 2005 to 2009, He held industry positions in Iran where He worked in the field of design, analysis, and manufacturing of electromechanical systems. Afterwards, He worked as a research fellow at the nanoelectronics group of University of Oslo. During his PhD (2009-2014), He developed different optical microresonators for high frequency ultrasound detection as well as fabrication and integration of these devices on the tip of an optical fiber to make an intravascular ultrasound imaging probe. He joined Cornell Nanophotonics Group as a postdoctoral associate in Nov. 2014. His research interests include developing optical/photonic devices and techniques for biomedical/mechanical applications. Email Mohammad Amin Tadayon.

Ph.D. Students

Mian Zhang

Mian Zhang

Mian graduated from the University of Bristol with an integrated MSci Physics degree in 2009. He worked on linear optical quantum computing for his master's project. During his undergraduate studies, Mian spent a year at Rutherford Appleton Laboratory, UK working in the Ultrafast Spectroscopy lab and on optical trapping. He also did a summer research on developing mini-magnetic traps for ultracold atoms in Oxford University. Currently, Mian is pursuing a PhD degree in Applied Physics working in the Cornell Nanophotonics Group. In his spare time, he loves to play Go (Baduk). Mian also enjoys photography, traveling and table tennis. Email Mian Zhang.

Yoon Ho Daniel Lee

Yoon Ho Daniel Lee

Yoon Ho graduated Magna Cum Laude from Cornell University in three years with a B.S. in Electrical and Computer Engineering in 2010. During his undergraduate career, he researched in the field of analog integrated circuits, working on a novel CMOS imaging chip. He also led the communication subsystem of a satellite project team at Cornell, gaining experience in RF communication links. Yoon Ho is now pursuing his MS/PhD degree in Electrical and Computer Engineering in the Cornell Nanophotonics Group. His research interests include integrated inter and intra chip optical communication and silicon photonics in general. He also enjoys playing the drums, guitar, tennis, and travelling in his free time. Email Yoon Ho Daniel Lee.

Shreyas Shah

Shreyas Shah

Shreyas is originally from Bombay, India. He graduated with a B. Tech. and an M. Tech. in Electrical Engg. specialising in Microelectronics from the Indian Institute of Technology Bombay (IITB) in 2010, and has joined the Cornell Nanophotonics Group as a Ph.D. student in Electrical Engg. His research interests lie in the physics and applications of the interaction of light with nanostructured matter and engineering nanostructured devices. From 2008 to 2010, as a summer intern at the Centre for High Technology Materials at U. of New Mexico and for his M. Tech. dissertation at IITB, he worked on studying optical and structural properties of self-assembled quantum dots (SAQDs) and on fabricating and characterising SAQD-based devices. His other interests include jazz and blues, outdoor activities, reading, cinema and theatre, cooking and studying economics, politics, culture and media. Email Shreyas Shah.

Lawrence Tzuang

Lawrence Tzuang

Lawrence graduated from National Tsing-Hua University in 2007 with a B.S. degree in Materials Science and Engineering. He received his M.S. degree in Electronics Engineering in 2009 from National Taiwan University, where he studied light transmission through periodic metallic holes and gratings. He later did a summer internship at OEpic Semiconductors Inc., Sunnyvale, in 2010. He is currently pursuing his PhD degree in Electrical & Computer Engineering as a member of the Cornell Nanophotonics Group. Lawrence is also a musician, a cellist, who's been frequently performing in public. Email Lawrence Tzuang.

Kevin Luke

Kevin Luke

Kevin graduated Magna Cum Laude from Columbia University in 2010 with a B.S. is Electrical Engineering. As an undergraduate, he worked on laser simulations for the National Ignition Facility at Lawrence Livermore National Laboratory for two summers. Kevin is currently pursuing his PhD degree in Electrical and Computer Engineering as a member of the Cornell Nanophotonics Group. His research interests are in light-matter interactions, especially nonlinear optics. Kevin has a variety of interests outside of research, including yoga/meditation, dance (salsa, hip hop, breakdancing, etc.,) and poetry.  Email Kevin Luke.

Austin Griffith

Austin Griffith

Austin graduated Summa Cum Laude from Tulane University in 2010, with a B.S. in Physics and Mathematics. He was a recipient of the National Defense Science and Engineering Graduate Fellowship (NDSEG) in 2010. As an undergraduate, he worked for the Tulane Center of Computational Science, pursuing research into computational modelling of DNA dynamics and fluid mechanics. Austin is pursuing his PhD in Applied Physics as a member of the Cornell Nanophotonics Group. His research interests include nonlinear optics in silicon waveguides and frequency conversion in the mid-infrared spectral region. Email Austin Griffith.


Avik Dutt

Avik graduated from the Indian Institute of Technology, Kharagpur in 2011, with a B. Tech in Electronics and Electrical Communication Engineering. As a part of his B. Tech dissertation, he carried out research on capillary optical fibers and their applications in attaining large mode area and in designing tunable fiber couplers. Avik has previously worked on quantum tunneling through smooth double barriers during his undergrad years. In the summer of 2010, he investigated optical forces near photonic crystal slabs at the University of Southern California, Los Angeles. Currently pursuing a PhD in Electrical and Computer Engineering in the Cornell Nanophotonics Group, Avik is interested in light-matter interactions and in the physics and application of photonic structures, especially in quantum optics. Besides engineering and science, he enjoys reading fiction and playing the piano. Email Avik Dutt.

Aseema Mohanti

Aseema Mohanti

Aseema graduated from MIT with a B.S. in Electrical Science and Engineering in 2011. As an undergraduate, she characterized photovoltaics for a micro-thermophotovoltaic generator project at the Institute for Soldier Nanotechnologies. She also investigated the contribution of singlet fission to quantum efficiency in organic solar cells as part of the Soft Semiconductor Group. She is currently pursuing her Ph.D. as a member of the Cornell Nanophotonics Group. Her research interests include light-matter interactions and energy conversion in photonic devices. In her free time, she enjoys painting, exploring nature, cooking/baking, and traveling. Email Aseema Mohanti.

Chris Phare

Chris Phare

Chris graduated from Vanderbilt University in 2011 with a B.A. in Physics and Mathematics with Highest Honors. His undergraduate research included ultrafast laser spectroscopy as well as designs for photonic crystal biosensors. As part of his honors thesis, he developed a perturbation theory approach to modeling the attachment of thin layers of dielectric analyte to high-index-contrast systems. Pursuing his PhD in the nanophotonics group, his interests include novel optical device structures, spectrometry, optical trapping, and biological applications. Apart from the lab, Chris enjoys music, photography, and traveling. Email Chris Phare.


Romy Fain

Romy is a graduate of the University of California, Berkeley.  She received her B.S. in Mechanical Engineering there in 2010 and began graduate study at Cornell that same year.  She has research experience in MEMS, piezoelectric energy harvesting, implantable sensors, biopolymer materials, electroactive materials, robotics, and photonic particle trapping.  Romy also has a talent for art with metal sculpture, large scale public art, performing with various dance and theater groups, and singing/playing jazz, etc. She also loves to travel...Italy, Nepal, India, South Africa, Zurich, Costa Rica.  At Cornell, Romy has an ardent interest in pursuing research developments in the following areas: mid infrared sensing, neural sensing, light and matter interactions, optomechanics, and combining optics and MEMS/NEMS technologies.  Email Romy Fain.

Steven Miller

Steven Miller

Steven graduated from Hofstra University in 2012 with a B.S. in Electrical Engineering with High Honors. He was a recipient of the NSF Graduate Research Fellowship (GRF) in 2012. As an undergraduate, he worked on medical ultrasound modeling as well as modulation codes for wireless communication systems. He also worked on characterizing a laser direct-write printing process during a summer at Princeton University. Steven is currently pursuing his Ph.D. degree in Electrical and Computer Engineering as a member of the Cornell Nanophotonics Group. His research interests include light-matter interactions, novel photonics devices as well as integrated photonics. Steven is also an avid musician, trumpet player, and enjoys the outdoors, cooking, and traveling. Email Steven Miller.

Brian Stern

Brian Stern

Brian graduated from Cornell University in 2013 with a B.S. in Electrical & Computer Engineering at Cornell University. He joined the Cornell Nanophotonics Group in 2011 as an undergraduate researcher. Current research involves developing a waveguide-fiber diffraction grating coupler and optimizing genetic algorithm designs. Past work has also included the topics of piezoelectricity, material acoustics, and virtual computing. His fields of interest include the near-field, far-field, and Duffield. Email Brian Stern.


Moshe Zadka

Moshe received his B.Sc in Computer Engineering and Applied Physics in 2007, M.B.A (Finance and Entrepreneurship) in 2010 and M.Sc in Applied Physics in 2011, all from the Hebrew University in Israel. As a graduate student in Applied Physics, He developed contacts which exhibit ohmic behavior (low resistance) to both p- and n-type Ge at high thermal budget. Since 2007 and before joining the Cornell Nanophotonics Group, Moshe also worked at Intel (later Micron) Research and Development department on developing a commercial transceiver based on Silicon Photonics. His worked focused on fabricating and characterizing an Avalanche PhotoDiode and an InP/Si Hybrid Laser.  His research interests include photonic devices, optical trapping, light-matter interactions and nanofabrication. In his spare time, Moshe enjoys reading, traveling and hiking. Email Moshe Zadka.

Ipshita Bio Pic

Ipshita Datta

Ipshita graduated with a B. Tech in Electronics and Communication Engineering from Institute of Engineering and Management, Kokata (India) in 2010, and a M. Tech in Fibre Optics and Lightwave Engineering from Indian Institute of Technology, Kharagpur (India) in 2012.  As a part of her masters' thesis, she worked on the design methodologies for Optical Interconnect Topologies in Network-on-Chip with bit-error rate (BER) and Transmit Power Constraints.  Ipshita joined the Cornell Nanophotonics Group in 2014, to pursue her Ph.D. in Electrical and Computer Engineering.  Her research interests include photonic devices, designing efficient network on chip topologies and work on advance modulation formats for photonic and wireless devices. Ipshita plays ping-pong, badminton, enjoys travelling, hiking, reading and playing Sudoku. Email Ipshita Datta.


Gaurang Bhatt

Gaurang graduated from Sardar Patel University, Anand India in 2008 with a B. Eng. in Electronics.  He received his M. S. degree in 2012 from Indian Institute of Technology Madras, India in Microelectronics.  His research work at IIT Madras, was on dispersion and polarization studies in large cross section silicon-waveguide devices (predominantly, channel interleavers).  Later, he worked as a Post-Silicon Validation Engineer at Intel India Design Center.In 2014, Gaurang joined the Cornell Nanophotonics Group as a PhD student in Electrical and Computer Engineering.  his research interests include photonic devices, photonic materials, nanofabrication, plasmonics and thermal emitters.Outside research, Gaurang enjoys hiking/trekking, cooking, reading (predominantly fiction & biographies) and often spends his free time with yoga/meditation. Email Gaurang Bhatt.

Xingchen's picture

Xingchen Ji

Xingchen graduated with a B. S. in Optical Engineering in 2013 and honored with "Outstanding Graduates". He received his M.Eng degree in Electrical and Computer Engineering in 2014 from Cornell University. As an undergraduate, he worked on quantum cascade laser, tandem polymer solar cells and other optical devices' designs and simulations in key laboratory of Luminescence and Optical Information, Beijing, China. His M.Eng project was focused on low loss silicon nitride waveguide fabrication. Xingchen is now pursuing his PhD degree in electrical and Computer Engineering in the Cornell Nanophotonics Group. His research interests include optical communication, 3D photonic crystals and silicon photonics in general. In his spare time, he enjoys playing golf, reading, cooking, watching movies and travelling. Email Xingchen Ji.

Undergraduate Students

Brian Lee

Brian Sahnghoon Lee

Brian is an undergraduate senior pursuing a B.S. degree in Electrical and Computer Engineering at Cornell University.He joined the group in early 2014 as an undergraduate researcher to engage in a project with Aseema and Steven on developing effective integrated metal heaters for silicon nitride waveguides.  Brian initially matriculated to Cornell as a Biology major in the College of Arts and Sciences, but his enthusiasm for optics were sparked from the course AEP 1100 "Lasers and Photonics", and transferred to the college of Engineering during his sophomore year to develop his interest for optics.  Before coming to Cornell, he has lived in six different countries, South Korea, Czech Republic, Switzerland, Thailand, Bangladesh and France. Brian can speak Korean and French.His biggest role models are Feynman and Michelangelo.

Recent News

Prof. Lipson ranked among top 1% of researchers for most cited papers in physics

Prof. Lipson ranked among top 1% of researchers for most cited papers in physics by Thomas Reuters.