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Dr. Renjie Zhou is currently an Assistant Professor of Biomedical Engineering at the Chinese University of Hong Kong (CUHK). Before joining CUHK, Dr. Zhou performed postdoc research under the supervision of Prof. Peter. T. C. So at the George R. Harrison Spectroscopy Lab at MIT, where he is now a Visiting Assistant Professor. At MIT, Dr. Zhou mainly worked on developing optical microscopy techniques for cell imaging applications. He obtained a PhD degree in Electrical and Computer Engineering from the University of Illinois at Urbana-Champaign (UIUC) in 2014. His doctoral thesis was on developing highly sensitive optical interferometric microscopy tools for deep subwavelength defect inspection and 3D object reconstruction. Dr. Zhou obtained MS degrees in optical sciences and electro-optics from the University of Arizona and from the University of Dayton, respectively. In 2008, Dr. Zhou obtained his bachelor's degree in Optical Information Science and Technology from Huazhong University of Science and Technology in China.  

Dr. Zhou's main research area is in inverse scattering and 3D tomographic imaging. He works on developing new imaging physical models and verifies by building them experimentally on his own. Dr. Zhou has co-authored over 50 peer-reviewed journal and conference papers, including 5 invited review articles and 2 invited key-contribution conferences. Some of his papers are published in high-profile journals such as Nature Photonics, Nano Letter, and Physical Review Letters. In addition, Dr. Zhou's work resulted in 4 US patent applications (1 has been issued). Dr. Zhou was invited as a reviewer more than 50 times for the top journals in his field including Nature’s Scientific Reports, Biomedical Optics Express, Optics Letters, Optics Express, and Journal of Biomedical Optics, and he was recognized for quality journal review by OSA. 

Dr. Zhou has received several research awards including the Beckman Institute Fellowship from the Beckman Foundation; Scholarship in Optics & Photonics and Newport Spectra - Physics Research Excellence Travel Grant from SPIE; Jean Bennett Memorial Student Travel Grant finalist from OSA; P. D. Coleman Outstanding Research Award, Sundaram Seshu International Student Fellowship, Yuen T. Lo Outstanding Graduate Research award, and Graduate School Conference Travel Grant from UIUC; College of Optical Sciences Fellowship from the University of Arizona; Summer Research Fellowship from the University of Dayton.

Besides research, Dr. Zhou is passionate in outreaching and teaching. He served on the OSA student chapter at UIUC and organized its iOptics seminar for one year, which brought in outstanding speakers in US and across the world. At MIT and UIUC, he has mentored 10 undergraduate students, 2 visiting scholars, and 2 graduate students. His mentoring has resulted in a few journal and conference publications and helped his mentees to secure internships at companies and government agencies such as P&G, Qualcomm, Capital One, and NSA. In particular, Dr. Zhou developed a tutorial on fundamental of optics for undergraduate students at UIUC. More importantly, Dr. Zhou cares much about the career of minorities. More than half of his mentees were coming from an underrepresented background. 

 

  News

 2017

  • Dr. Renjie Zhou joined the Chinese University of Hong Kong as an Assistant Professor of Biomedical Engineering. June 25 2017  
  • Our review on "Tomographic phase microscopy: principles and applications in bioimaging [Invited]"  in JOSA B was again the second most downloaded paper in JOSA B in May 2017. June 17, 2017
  • Our review on "Tomographic phase microscopy: principles and applications in bioimaging [Invited]"  in JOSA B was the second most downloaded paper in JOSA B in April 2017. May 24,2017
  • Our review on "Tomographic phase microscopy: principles and applications in bioimaging [Invited]" in JOSA B was the selected as the editor’s pick. Editor's Picks serve to highlight articles with excellent scientific quality and are representative of the work taking place in a specific field. May 3, 2017

  • Two new papers published this week! One is an invited review on Tomographic Phase Microscopy: Principles and Applications in Bioimaging piblished in JOSB B. The other one is on Digital micromirror device-based common-path quantitative phase imaging published in Optics Letter. April 5, 2017. 
  • Dr. Zhou gave a Modern Optics and Spectroscopy (MOS) seminar at MIT. His talk was on Tomographic Phase Microscopy: a label-free platform for 3D imaging of cells. March 7, 2017
  • Our first startup competition entered the semi-final at SPIE Startup Challenge 2017 at Photonics West. Our pitch was on Portable Precision Profilometer. January 31, 2017  
  • Our recent paper on "Modeling the depth-sectioning effect in reflection-mode dynamic speckle-field interferometric microscopy" published in Optics Express. January 4, 2017

  • Dr. Zhou gave a colloquium to Frontiers of Optics at Zhejiang University. His talk was on Quantitative Phase Microscopy: a label-free platform for material metrology and biological imaging. January 3, 2017
 
2016

  • Dr. Zhou gave an invited talk on "Pushing the instrument limits in Quantitative Phase Imaging" to iOptics, the Photonics/Optics student chapter at the University of Illinois at Urbana-Champaign. November 4, 2016

  • Dr. Zhou gave invited talks to Tsinghua University (July 8), Zhejiang Normal University (July 27), and Tianjin University (June 20) in China. July 27, 2016

  • Dr. Zhou delivered an invited talk on "Quantitative phase microscopy: a label-free platform for biomedical imaging" to Connecticut Children's Medical Center, University of Connecticut School of Medicine department of pediatrics. May 17, 2016

  • Dr. Zhou received a second recognition for quality journal review, Optical Society of America, May 10, 2016

  • Our paper "Diffraction phase microscopy: principles and applications in materials and life sciences" is one of the 10 Most Cited Articles in Advances in Optics and Photonics (AOP) over the past two years. April 12, 2016

  • Our paper "Diffraction phase microscopy: monitoring nanoscale dynamics in materials science [Invited]" is one of the 15 Most Cited Articles in Applied Optics over the past two years. March 22, 2016

  • Our paper "Solving inverse scattering problems in biological samples by quantitative phase imaging" is one of the Most Accessed Articles in Laser & Photonics Reviews in February 2016. March 1, 2016


    2015

  • Our review paper, solving scattering inverse problems in biological samples using quantitative phase imaging, has been accepted for publishing in Lasers & Photonics Review, October 2, 2015
  • Our paper, digital micromirror device-based laser-illumination Fourier ptychographic microscopy, has been accepted for publishing in Optics Express, September 28, 2015
  • Dr. Zhou received a recognition for quality journal review, Optical Society of America, April 16, 2015
  • Dr. Zhou gave an invited talk to the Electro-optics Program at the University of Dayton, April 10, 2015
    
    2014

  • Our patent on “White-light diffraction tomography of unlabeled live cells” issued as US 2014/0307261, October 20, 2014
  • R. Zhou et al.,"Inverse scattering solutions using low-coherence light", Opt. Lett., 39 (15), 4494 (2014), has been selected for publication on Virtual Journal for Biomedical OpticS. October 13, 2014 
  • Dr. Zhou joined the Laser Biomedical Research Center (LBRC), led by Prof Peter So, at Massachusetts Institute of Technology (MIT) as a postdoctoral research associate. September 1, 2014
  • Renjie has passed his Ph.D final defense! He is now titled as "Dr. Zhou". August 18, 2014. 
  • OSA Imaging and Applied Optics Congress' Digital Holography & 3-D Imaging (DH) Technical Program, has accepted our abstract "Inverse Scattering Solutions Using Holographic Data" as a postdeadline oral presentation, June 27, 2014. The conference will be held in Seattle, WA, from July 13 to 17, 2014. 
  • Techcon conference, organized by Semiconductor Research Corporation (SRC), accepted our abstract on wafer defect inspection for both an oral and a poster presentation. The conference will be held in Austin, TX, from September 7 to 9 , 2014. Techcon generously covers most of the conference expenses, Apr 17, 2014
  • Renjie gave a Beckman Graduate Seminar on wafer defect inspection, University of Illinois, March 11, 2014. 
  • Renjie received the P. D. Coleman Outstanding Research Award,  University of Illinois, March 11, 2014. 
  • OSA BIOMED has accepted our abstracts on white-light diffraction tomography for an oral and a poster presentation, the conference will be held in Miami, FL, from April 26 to 30, Mar 3, 2014.
  • Renjie presented at SPIE Advanced Lithography Conference (Feb 23- Feb 27 in San Jose, CA) on wafer defect optical inspection, Feb 26, 2014
  • Renjie successfully defended his Ph.D prelim, Jan 29, 2014

    2013

  • Good news! Renjie has been selected to receive a 2013-14 Beckman Institute Graduate Fellowship (the only recipient from ECE) at the Beckman Institute for Advanced Science and Technology, April 26, 2013.
  • Techcon conference organized by Semiconductor Research Corporation (SRC) has accepted our abstract on wafer defect inspection for both an oral and a poster presentation. The conference will be held in Austin, TX, from Sep 9 to 10, 2013. Techcon generously covers most of the conference expenses. 
  • CLEO (Conference on Lasers and Electro-optics) has accepted our abstract on "Finding defects in a 22 nm node wafer with visible light" for an oral presentation, the conference will be held in San Jose, CA,June 9-14, 2013. 
  • Renjie received Sundaram Seshu International Student Fellowship from the ECE department, March 28, 2013.
  • The graduate school has selected Renjie for the Conference Travel Grant, University of Illinois, March 25, 2013.  
  • Renjie is attending 2013 SPIE Advanced Lithography Conference from Feb 24- Feb 28 in San Jose, CA. He will give a presentation on wafer defect optical inspection. 

    2012

  • Renjie has been selected as the recipient of the Yuen T. Lo Outstanding Graduate Research Award of 2013 from the ECE department, Nov 30, 2012
  • Renjie attended the IEEE Photonics Conference  and presented his work on "Wafer Inspection using Diffraction Phase Microscopy and Image Post-processing", Sep 23-27, San Francisco, CA 
  • Our abstract titled "Diffraction Phase Microscopy for Wafer Inspection", has been accepted to IEEE Photonics Conference 2012 (September 23-27), San Francisco, CA, June 29 ,2012
  • Renjie received the 2012 SPIE Scholarship in Optics & Photonics, May 25, 2012.
  • Our paper titled "Transform-limited, seed-injection, Q-switched, ring cavity fiber laser” has been accepted for publication in IEEE Journal of Lightwave Technology, May 15, 2012.
  • Our paper titled "An all fiber based Talbot self-imaging mirror device for phase-locking of a multi-fiber laser" has been published online, J. Europ. Opt. Soc. Rap. Public. 7, 12012 (2012), May 11, 2012.
  • Renjie passed the Ph.D qualifying exam in ECE department at the University of Illinois on May 1st, 2012.
  • OSA Optical sensors conference has accepted our abstract titled "CO2 sensing with a 2005 nm thulium holmium co-doped fiber laser" for an oral presentation. The conference will take place in Monterey, CA, in June 2012.
  • Our abstract titled "Injection seeded Q-switched ring cavity fiber laser with transform-limited pulses in the C-band" is accepted by SPIE Photonics West 2012 for a poster presentation in January, 2012, San Francisco, CA.

    2011

  • Renjie is joining the ECE department at University of Illinois at Urbana-Champaign, Aug 20, 2011. 
  • Renjie successfully defensed his M.S thesis on "Developments of narrow-linewidth Q-switched fiber laser, 1480 nm Raman fiber laser, and free space fiber amplifiers", College of Optical Sciences, Aug 12, 2011. Thanks for support from Profs. Nasser Peyghambarian and Wei Shi!

    2010

  • Renjie delivered his talk on "Phase locking multiple fiber lasers using Talbot self-imaging effect" at the 2010 OSA/FIO conference in Rochester. Renjie attended this conference from Oct 26-28, 2010, and met a lot of his friends there.
  • Our abstract titled "Phase locking multiple fiber lasers using Talbot self-imaging effect" is accepted by SPIE Photonics West 2011 for a poster presentation. The conference will be held in January, 2011, San Francisco, CA.
  • OSA/FiO 2010 has accepted our abstract on "Phase locking multiple fibers by a Talbot Mirror Fiber Device". Renjie will give an oral presentation during the conference in October, Rochester, NY.
  • Renjie was selected as the Jean Bennett Memorial Student Travel Grant finalist. This travel grant was established in memory of Jean M. Bennett, OSA’s first female president, who was recognized for her contributions to the studies of optical surfaces. The first Jean Bennett Memorial Student Travel Grant award will be announced at the OSA/FIO 2010 conference. September, 2010.
  • Our paper "Vectorial fiber laser using intracavity axial birefringence", (Opt. Express 18, 10839, 2010) was featured on the Press Coverage in "Adding fiber pays off for industry," Photonics Spectra, July 2010.
  • News release by the Optical Society of America (OSA), "Breakthroughs in Unconventional Polarization States if Light" . This focus issue was reported by many news outlets, including Nature Photonics, Physics Today, physorg, photonics spectra, nanowerks, esciencenews, eurekalert, azonano, nano patents and innovations, innovation-report, photononline etc. Our paper was briefly introduced.
  • Our manuscript "Vectorial fiber laser using intracavity axial birefringence" advised by Prof. Zhan, in collaboration with Prof. Peter Powers, Prof. Joseph Haus, is published in Optics Express Focus Issue on Unconventional Polarization States of Light (UPSL). May 10, 2010.
  • Renjie successfully defended his thesis on "Development of high power fiber laser techniques". Thanks Profs. Qiwen Zhan, Joseph Haus, and Peter Powers for your support. April 1st, 2010.

    2009

  • Renjie received the Newport Spectra - Physics Research Excellence Travel Grant for attending the SPIE Photonics 2010 Conference, November 30th, 2009.
  • Renjie received the Graduate School Summer Research Fellowship, University of Dayton, April, 2009.

    2008

  • Renjie joined Prof. Joseph. Haus' research on "high power fiber lasers", University of Dayton, Decemeber, 2008
  • Renjie joined Prof. Qiwen Zhan's research on the research of "unconventional polarization, specifically the so called Cylindrical Vector beams", University of Dayton, September, 2008.

                                               
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