Nano-enabled Energy Conversion, Storage and Thermal Management Systems (NEXT) Group

University of Colorado at Boulder

Director: Dr. Ronggui Yang, Professor of Mechanical Engineering

Office Location: ECME 279, Engineering Center

Student Office: ECME 219,

Student Labs: ECME 165, DLC 1B14, ECSL 111 & 113

Tel: 303-735-1003 (O); Fax: 303-492-3498

People Research Publications Facilities Open Positions News

NEXT Research Team

We usually recruit 2-3 post-doc research associates and/or Ph.D students annually! For openings, check out here!

Director

Dr. Ronggui Yang (Ph.D 02/2006 MIT, MS 06/2001 UCLA, MS 07/1999 Tsinghua Univ., BS 07/1996 Xi’an Jiaotong University)

1). Current Research Group Members (Award-Winning Research Team, See Section 4). of this page)

Post-Doctoral Research Associates:

Dr. Arto Juhani Gröhn (Post-Doctor, co-advised with Professor Alan Weimer in Chemical Engineering, September 2014- , Research Area: Modeling of Carbonthermic Reaction Process for Magnesium Production using Fluidized Beds, Ph.D 2014 from Particle Technology Lab, ETH-Zurich, Swiss Post-Doctoral Fellowship).

Dr. Dongliang Zhao (Post-Doctor, October 2014 - , Research Area: Energy-Efficient Personalized Thermal Management Systems & Radiative Cooling-Cold Collection and Storage for Power Plant Cooling, Ph.D 2014 in Civil and Architecture Engineering, University of Wyoming; M.S. 2011 in Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China, B.S. 2008 in Heating, Ventilation and Air-Conditioning Engineering, Nanjing University of Aeronautics and Astronautics (NUAA), Nanjing, China).

Dr. Rongfu Wen (Post-Doctor, December 2015 - , Research Area: Micro/Nanostructures Surfaces for Phase-Change Heat Transfer Enhancement, PhD 2015 and MS 2011 in Chemical Engineering, Dalian University of Technology, China, BS 2009 in Chemical Engineering, Yanshan University, China)

Dr. Puqing Jiang (Post-Doctor, March 2016 - , Research Area: Phonon Transport and Thermal Management in GaN Devices, PhD 2015, National University of Singapore, MS 2010 and BS 2008, Department of Thermal Engineering, Tsinghua University, Beijing, China)

Graduate Students:

Ms. Shanshan Xu (Ph.D student, August 2013 - , Research Area: Thermal Ground Planes with Hybrid Micro/Nano-Wicking Structures, BS.2013, Mechanical Engineering, Beijing University of Aeronautics and Astronautics, China)

Mr. Xin Qian (Ph.D student, August 2014 - , Research Area: Modeling and Characterization of Nanoscale Thermal Transport, BS 2014, School of Power Engineering, Huzhong University of Science and Technology, China)

Mr. Tianzhu Fan (MS student, August 2015 - . Research Area: Thermoelectric Energy Conversion Units for Personal Thermal Management, BS 2015 in Thermal Engineering, Dalian University of Technology, China).

Mr. Xinpeng Zhao (Ph.D student, August 2016 - , Research Area: Thermal and Mechanical Modeling and Characterization of Liquid-Crystalline Nano-Cellulose Aerogels, MS. 2012-2015 Xi’an Jiaotong University, BS 2008-2012 Northwestern Polytechnic University, Xi’an, China).

Undergraduate Students:

Christine Martini (September 2015 - ): Development of Low Heat Flux Single-Phase Thermal Siphons

Siyu Jiang (February 2016- ): Radiative Cooling-Cold Collection and Storage for Power Plant Cooling

Dillon Kidd (September 2016 - ) Discovery Learning Apprentice: Development of Low Heat Flux Single-Phase Thermal Siphons for Radiative Cooling

Ethan Cobb (September 2016 - ) Discovery Learning Apprentice: High Heat Flux Thermal Ground Planes

Mathew Ballinger (September 2016 - ) Discovery Learning Apprentice: Hybrid Micro/Nano-Structures for Dropwise Condensation

K-12 Students:

Miss. Hannah Zhang (09/2015 – 06/2017, Fairview High School, Project: Personal Cooling Units)

Visiting Professors:

Dr. Xu Ji (October 2016 - September 2017, Associate Professor of Energy and Environmental Engineering; Ph.D. 2008 in MEMS, School of Electronics Engineering and Computer Science, Peking University, China; MS 2001 and BS 1998 in Engineering Thermophysics, Department of Engineering Mechanics, Tsinghua University, China)

Dr. Congliang Huang (October 2016 – October 2017, Associate Professor, School of Electric Power Engineering, China University of Mining and Technology, China; PhD. 2013 in Thermal Energy and Power Engineering, University of Science & Technology Beijing, BS 2007 in Thermal Energy and Power Engineering, Qingdao University).

Visiting PhD Students:

Sundararaj Manikandan (October 2016 – December 2016, PhD student in Indian Institute of Technology-Delphi, BRAVAN Fellowship sponsored by Indo-US Science and Technology Forum)

Mr. Biao Wang (October 2016 – March 2018, Ph.D student in School of Physics, Tongji University, Project: Nano-Thermoelectrics and Phononics, co-advised with Professor Baowen Li).

Ms. Xing Lu (October 2016 – March 2018, Ph.D student in College of Power and Energy Engineering, Xi’an Jiaotong University).

2). Alumni who made notable contributions (Reverse-chronically with the time they left the group. These are the people who involved in experimental system building, challenging research topic, or interesting research that leads to publishable results. We are indebted to them who spent their most creative time with us and helped to establish our group as of today):

Dr. Xiaokun Gu (Ph.D student, August 2011 – December 2016, Research Area: Quantum-Mechanics-Driven Prediction of Nanoscale Thermal Transport, MS. 2011 & BS.2008 with Professor Min Chen, Engineering Thermophysics, Tsinghua University, China)

Mr. Wei Wang (MS student, December 2013 – August 2015, Research Area: Thermal Conductivity Characterization of Polymer Composites using Pump-and-Probe Method, MS. 2013 with Professor David Cahill in Materials Science and Engineering University of Illinois at Urbana-Champaign; BS.2009, Chemistry, Beijing University, China)

Ms. Itza Beltran, June-August 2015, SMART Fellow, Department of Mechanical Engineering, University of Central Florida, Project: Thermal Characterization of Flexible Thermal Ground Planes.

Mr. Nicolas Pinkowski, August 2014- May 2015, DLC Apprentice, Department of Mechanical Engineering, University of Colorado, Boulder, CO, Project: Vacuum-Enhanced Heat Spreaders for Smart Phones.

Dr. Suraj Joottu Thiagarajan, Current Position: (Ph.D student, June 2008 – December 2014, Research Area: Enhanced Spray Cooling and Pool Boiling on Micro-Textured Surfaces, MS. 2007 with Professor Jos Heremans in Mechanical Engineering, Ohio State University, BS 2005, PSG College of Technology, India)

Mr. Kent Kurashima, June-August 2014, SMART Fellow, Department of Mechanical Engineering, San Diego State University, Project: Liquid Charging System and Testing Apparatus for Thermal Ground Planes.

Dr. Qian Li, Current Position: (Ph.D student, Aug. 2009 – December 2014, Research Area: Enhancing Phase-Change Heat Transfer with Nanowires, MS 2009, Institute of Engineering Thermophysics, Chinese Academy of Science, BS 2006, University of Science and Technology of China).

Dr. Miao Tian, Current Position: , (Ph.D student, Aug. 2009 – December 2013, Research Area: Nanowire Network Anodes for Lithium Ion Batteries, BS 2007 in Applied Physics, Xi‘an Jiaotong University, China)

Dr. Jun Liu, Current Position: Post-Doctor at UIUC with Professor David Cahill (Ph.D student, Aug. 2008 – September 2013, Research Area: Modeling and Thermoreflectance Characterization of Nanostructured Polymer and Hybrid Materials, BS 2008 Thermal Engineering, Huangzhong University of Science and Technology, China)

Mr. John Goblirsch (March 2010 – May 2013, Research Area: Functionalized Micro/Nano-Structures for Pool Boiling Heat Transfer, MS/BS (2013/2011) in Mechanical Engineering and BS in Applied Math, University of Colorado at Boulder)

Dr. Jiafeng Wu, Current Position: Associate Professor at Southeast University (Post-Doc, March 2011 – January 2013, Research Area: Dropwise Condensation and Flow Condensation, Ph.D 01/2009 Engineering Thermophysics & B.Sc. 09/2003 Power Engineering, Southeast University, China).

Dr. Wei Wang, Current Position: Associate Professor at Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences (Post-Doc, August 2008 – July 2012, Research Area: Nanostructures for Energy Conversion, Storage and Thermal Management, Ph.D 07/2008 Condensed Matter Physics & B.Sc. 07/2003 Physics, University of Science and Technology of China)

Mr. Gensheng Wu, Current Position: Ph.D student at Southeast University (Visiting Ph.D student, September 2010-September 2012, Ph.D Student 2008- , School of Mechanical Engineering, Southeast University, China, Research Area: Enhancing Flow Boiling Performance in Microchannels).

Mr. Eli Kuhlmann, Current Position: HGST, a Western Digital Company (May 2011 – May 2012, Research Area: Optical Characterization of Nanoscale Heat Transport)

Professor Yujie Wei, Current Position: Professor at Institute of Mechanics, Chinese Academy of Sciences (Visiting Professor, September 2011- May 2012, Research Area: Mechanics of Nanostructures, Ph.D 07/2006 MIT, MS. 07/2000, Chinese Academy of Science, BS 07/1997 Peking Uiversity. URL: http://www.lnm.cn/wei/index.files/index_english.htm ).

Dr. Xiaobo Li, Current Position: Post-Doctor at MIT with Professor Gang Chen, (Ph.D student, Aug. 2007 – April 2012, Research Area: Molecular Dynamics Simulation and Nonequilibrium Green’s Function Theory for Phonon Transport in Nanostructures, MS 2009, Institute of Engineering Thermophysics, Chinese Academy of Science, BS 2006, University of Science and Technology of China).

Dr. Jun Zhou, Current Position: Professor at Tongji University, Shanghai, China, (Post-Doc, May 2009 – March 2012, Research Area: Thermoelectric Transport, Electron and Phonon Coupling across Material Interfaces, Ph.D 01/2009 Condensed Matter Physics & B.Sc. 07/2004 Physics, University of Science and Technology of China).

Dr. Yuanyuan Wang, Current Position: Associate Professor at Shanghai Second Polytechnic University, Shanghai, China, (Post-Doc, September 2010 – March 2012, Research Area: Thermoelectric Transport in Hybrid Organic-Inorganic Materials, Ph.D 12/2010 Condensed Matter Physics & B.Sc. 07/2004 Physics, University of Science and Technology of China)

Ms. Dan Li, Current Position: Ph.D student at Stanford University, (September 2009-September 2011, Ph.D student 2007- , Institute of Microelectronics, Peking University, China, B.Sc. Microelectronics, Tianjin University, Research Area: Enhancing Flow Boiling Performance in Microchannels)

Mr. Benoit Latour, Current Position: Ph.D Student with Professor Sebastian Volz at Ecole Central Paris, (February 2011-August 2011, MS/BS Student 2006-2012, Ecole Central Paris, France, Research Area: Functionalized Micro/Nano-Structures for Pool Boiling Heat Transfer)

Dr. Jose Ordonez, Current Position: Post-Doctor with Professor Sebastian Volz at Ecole Central Paris, (Visiting Ph.D student for June 2010-June 2011, Ph.D student 2008- , Applied Physics Department, Cinvestav-Unidad Merida, Mexico, Research Area: Reduced Order Modeling of Thermal Conductivity in Nanocomposites)

Dr. Yadong Zhang, Current Position: Intel, (Ph.D student, co-advised with Prof. Y.C. Lee, Aug. 2006 – Apr. 2011, Research Area: ALD Hermetic Packaging – Micro/Nanofabrication and Characterization, MS. 2004/ BS. 2001, Material Science and Engineering, Beijing University of Aeronautics and Astronautics, China)

Dr. Jen-Hau Cheng, Current Position: Bell Labs, (Ph.D student, co-advised with Prof. Y.C. Lee, Aug. 2006 – Aug. 2010, Research Area: Interconnect and Thermal Management Technologies for GaN Nanowire Devices, MS 2003, Mechanical Engineering, National Taiwan University)

Dr. Jie Zhu, Current Position: Research Scientist at the Institute of Engineering Thermophysics, Chinese Academy of Sciences, (Visiting Ph.D student, February 2009-September 2010, Ph.D student with Professor Dawei Tang 2004-2011, Institute of Engineering Thermophysics, Chinese Academy of Sciences, BS 2004, Thermal Science and Energy Engineering, University of Science and Technology of China).

Dr. Weixue Tian, Current Position: Caterpillar Inc., (Post-Doc, Jan. 2006 – Sep. 2007, Research Area: Monte Carlo Simulation of Phonon Transport, Ph.D 12/2005, Mechanical Engineering, University of Connecticut, MS. 2000 / BS. 1997, Shanghai Jiaotong University.)

Dr. Liang-Chun Liu, Current Position: Ph.D student at National Taiwan University (Visiting Ph.D student from National Taiwan University, Sep. 2007-Sep. 2008, Research Area: Phonon Transport and Nanoscale Thermal Characterization)

3). Job Placement of NEXT Alumni:

Ph.D Graduates:

Name (years at CU-NEXT)	Role	First Job after leaving NEXT	Current Position
Suraj Thiagarajan (08/2008-12/2014)	Ph.D Student	AqWest	AqWest
Qian Li (08/2009-12/2014)	Ph.D Student
Miao Tian (08/2009-12/2013)	Ph.D Student
Jun Liu (08/2008-09/2013)	Ph.D Student	Post-Doc at UIUC (10/2013- *)	Assistant Professor, Mechanical Engineering, North Carolina State University
David Makhija (08/2008-05/2013)	Ph.D Student, Co-advised	Altair	Altair
Xiaobo Li (08/2007-04/2012)	Ph.D student	Post-Doc at MIT (04/2012 - *)	Associate Professor, Huazhong University of Science and Technology
Yadong Zhang (09/06- 04/11)	Ph.D student	Intel	Intel
Jen-Hau Cheng (09/06-09/10)	Ph.D student	Bell Labs	Bell Labs

M.Sc Graduates:

Name (years at CU-NEXT)	Role	First Job after leaving NEXT	Current Position
Jun Liu	MS/Ph.D student	-	Ph.D student in NEXT
Miao Tian	MS/Ph.D student	-	Ph.D student in NEXT
Suresh Ramanan (01/07-12/09)	Master’s student	Schlumberger	Schlumberger

Post-doctor Research Associates and Visiting Scholars:

Name (years at CU-NEXT)	Role	First Job after leaving NEXT	Current Position
Yangbo Deng (09/14-09/15)	Visiting Professor	Professor, Dalian Maritime University	Professor, Dalian Maritime University
Jiafeng Wu (03/11-01/13)	Post-Doc	Associate Professor, Southeast University	Associate Professor, Southeast University
Wei Wang (08/08-07/12)	Post-Doc	Associate Professor, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences	Associate Professor, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences
Yujie Wei (09/11-05/12)	Visiting Professor	Professor, Institute of Mechanics, Chinese Academy of Sciences	Professor, Institute of Mechanics, Chinese Academy of Sciences
Jun Zhou (05/09-03/12)	Post-Doc	Professor, Tongji University	Professor, Tongji University, Shanghai, China
Yuanyuan Wang	Post-Doc	Associate Professor, Shanghai Second Polytechnic University	Associate Professor, Shanghai Second Polytechnic University
Dae Up Ahn (01/08-06/09)	Post-Doc	Post-Doc at CU-Boulder	Nexans Research Center, South Korea
Xiaochun Wang (09/07-09/08)	Post-Doc	Tsinghua University	Associate Professor, Institute of Atomic and Molecular Physics, Jilin University, Changchun, China (10/2010-)
Weixue Tian (01/06-09/07)	Post-Doc	Caterpillar Inc	Caterpillar, Inc (09/07- )
Gensheng Wu (09/10-09/12	Visiting Ph.D Student	Ph.D Student in Southeast University	Ph.D Student in Southeast University
Dan Li (09/09-09/11)	Visiting Ph.D Student	Ph.D student in Beijing University	Ph.D student in Stanford University (06/2012- )
Jose Ordonez (06/10-06/11)	Visiting Ph.D student	Ph.D student in Cinvestav-Unidad Merida, Mexico	Post-Doc at Ecole Central Paris (06/2012- )
Liang-Chun Liu (09/07-09/08)	Visiting Ph.D student	Ph.D student in National Taiwan University	Applied Materials Inc. (01/2011- )
Jie Zhu (02/09-09/10)	Visiting Ph.D student	Ph.D student in Chinese Academy of Sciences	Research Scientist at the Institute of Engineering Thermophysics, Chinese Academy of Sciences. (09/2010-)

4). Awards Received by Advisees

1. Mr. Nicolas Pinkowski won a Best Poster in Mechanical Engineering Award for his DLC apprenticeship project during the annual DLC Apprentice Symposium in May 2015.

2. Qian Li, Mechanical Engineering Graduate Student of the Month, June 2014, CU-Boulder.

3. Jun Liu, Outstanding Ph.D Graduate (the sole One of 70+ Ph.D graduates for 2013-2014), School of Engineering, CU-Boulder

4. Tingyu Lu (advisee of Jun Zhou), Third Prize of Best Poster Awards, International Conference on Phononics and Thermal Energy Systems, May 2014.

5. Jun Liu, the Third Place Prize of NSF student poster competition in ASME/IMECE 2013 in San Diego, CA.

6. Jun Liu, NSF Travel Award for attending ASME/IMECE 2013 in San Diego, CA.

7. Xiaokun Gu, NSF Travel Award for attending ASME/IMECE 2013 in San Diego, CA.

8. Qian Li, NSF Travel Award for attending ASME/IMECE 2013 in San Diego, CA.

9. Miao Tian, NSF Travel Award for attending ASME/IMECE 2013 in San Diego, CA.

10. Jose Ordonez, IPPA Junior Prize 2013, the International Photoacoustic and Photothermal Association (IPPA).

11. Jun Liu, Best Presentation of The DayAward for Graduate Engineering Annual Research & Recruitment Symposium(GEAR²S), Universityof Colorado at Boulder, 2013.

12. Qian Li, Best presentation of Fluid/Thermal/MEMS section in Graduate Engineering Annual Research&Recruitment Symposium (GEAR²S), University of Colorado at Boulder, 2013

13. Jose Ordonez, National Prize for Best Dissertation in Natural Sciences, Mexico, 2012.

14. Jun Liu, the First Place Prize of NSF CBET/CMMI student poster competition in ASME/IMECE 2012.

15. Xiaokun Gu, the Second Place Prize of NSF CBET/CMMI student poster competition in ASME/IMECE 2012

16. Xiaokun Gu, NSF Travel Award for attending ASME/IMECE 2012 in Houston, TX.

17. Jun Liu, NSF Travel Award for attending ASME/IMECE 2012 in Houston, TX.

18. Miao Tian, May 2012, Mechanical Engineering Graduate Student of the Month, CU-Boulder.

19. Jun Liu, March 2012, “Most Excited Molecules” for his presentation at 12th GEAR²S Conference, Mechanical Engineering, CU-Boulder.

20. Christopher Oshman, Qian Li, Li-Anne Liew, Ronggui Yang, Yung-Cheng Lee, Victor M. Bright “Development of Flexible Thermal Ground Planes,” DARPA/iMINT Center Best Poster Award (1 out of 3 from a total of 30), November 2011.

21. Yadong Zhang, May 2011, Outstanding Ph.D Dissertation Award in Mechanical Engineering, CU-Boulder.

22. Xiaobo Li, September 2010, Mechanical Engineering Graduate Student of the Month, CU-Boulder.

23. Jun Liu, February 2010, Mechanical Engineering Graduate Student of the Month, CU-Boulder.

24. Qing Li , Mark Siemens , Ronggui Yang , Keith Nelson, Erik Anderson , Margaret Murnane , Henry Kapteyn, Quasi-ballistic thermal transport from a nanoscale hotspot observed using ultrafast coherent extreme ultraviolet beams, Fall 2009 Meeting of the Four Corners Section of the APS, Best Presentation Award, Golden, CO, October 23-24, 2009.

25. Mark Siemens, 2009 National Research Council Postdoctoral Fellowship.

26. Yadong Zhang, October 2009, Mechanical Engineering Graduate Student of the Month, CU-Boulder.

27. Jen-Hau Cheng, August 2009, Mechanical Engineering Graduate Student of the Month, CU-Boulder.

28. Wei Wang, Dae Up Ahn, Chen Li, Victor Bright, Y. C. Lee and Ronggui Yang, Fabrications of Nanowire Arrays for Emerging Energy Application, DARPA/iMINT Center First Prize Best Poster Award (1 out of 2 from a total of 30), March 2009.

29. Chris Oshman, Bo Shi, Chen Li, Ronggui Yang, Y. C. Lee and Victor Bright, A New Direction in Cooling Photovoltaics, DARPA/iMINT Center Second Prize Best Poster Award (1 out of 3 from a total of 30), March 2009.

30. Jun Liu, Best Graduate Teaching Assistant (TA) award of 2008-2009 academic year, Department of Mechanical Engineering.

31. Dave Makhija, Best Presentation of the First Year Graduate Students, 9^th GEARS Conference, Department of Mechanical Engineering.

32. Suraj Joottu Thiagarajan, Engineering Dean’s Research Assistantship (RA paid by the Dean for a semester, 1 out of 7 total awarded in 2008 in the college.), 2008.

33. Dave Makhija, Engineering Dean’s Research Assistantship (RA paid by the Dean for a semester, 1 out of 7 total awarded in 2008 in the college.), 2008.

34. Yadong Zhang, Travel Fellowship for attending the 2008 SID Display Seminar and Exhibition, Society for Information Display, May 2008.

35. Yadong Zhang, David miller, J. Bertrand, Ronggui Yang, Martin L. Dunn, Steven M. George, and Y.C. Lee, et al, ‘Visualization of Defects and Cracks in Atomic Layer Deposition-base Barrier Coatings,” DARPA/iMINT Center Best Poster Award (1 out of 3 from a total of 30), March 2008.

36. Bo Shi, Victor M. Bright, Ronggui Yang, G.P. Peterson, Keith Peterson, and Chen Li, “Thermal Modeling and Design of Flexible Thermal Ground Plane,” DARPA/iMINT Center Best Poster Award (1 out of 3 from a total of 30), March 2008.

37. Weixue Tian, Jen-Hau.Cheng, Scott R. Johnson, Y.C. Lee, Victor Bright, and Ronggui Yang, ‘Photonic Crystal enabled Micro Heat Pipe Arrays and Micro Capillary Pumped Loops,” DARPA/iMINT Center Best Poster Award (1 out of 3 from a total of 25), March 2007.

5). Some Recent Pictures of the Group

(Welcome Party in Ronggui’s House, August 2006)

(Lunch in Boulder, Spring 2007)

(Thanksgiving Party in Ronggui’s House, 2007)

(Prof. Dresselhaus’ Visit in April 2008)

(Welcome Party in Ronggui’s House, September 2009)

(Welcome Party in Ronggui’s House, August 21, 2010. Missing: Mr. Yadong Zhang, Mr. Dave Makhija, Ms. Dan Li, and Mr. John Goblirsch)

(Jun Liu, Xiaobo Li, and Jie Zhu presented their papers at the 14^th International Heat Transfer Conference in Washington DC on Aug 8-13, 2010)

(Ronggui Yang received the ASME Bergles-Rohsenow Young Investigator Award in Heat Transfer from Professor Art E. Bergles during the Heat Transfer Award Luncheon at the 14^th International Heat Transfer Conference in Washington DC on Aug 8-13, 2010)

(Group Outing in Aspen, CO, on Sep 25-26, 2010)

(Thanksgiving Party in Ronggui’s House, 2011)

(Professor Mildred S. Dresselhaus' visit on Sunday January 14, 2012. Yujie, Xiaobo, Jun and Yuanyuan discussed graphene [mechanics and thermal properties] and thermoelectric research with Professor Dresselhaus. She appeared to be very impressed by their efforts. Congrats Millie on her Fermi Prize named by President Obama http://energy.gov/articles/president-obama-names-scientists-mildred-dresselhaus-and-burton-richter-enrico-fermi-award)

Professor Mildred S. Dresselhaus' visit on Friday March 7^th, 2014. Professor Dresselhaus spent 4-5 hours listening to my students work and gave many insightful advices. The team was really impressed. Professor Baowen Li and his team also visited the group on the same day.