Professor Department of Mechanical and Energy Engineering

Qi-Huo Wei graduated from Department of Physics, Nanjing University in 1993 with a PhD in condensed matter physics. Prior to joining SUSTech, he was a tenured professor at the Liquid Crystal Institute and Department of Physics in Kent State University in US. He was a recipient of Alexander von Humboldt research fellow and the CAREER award of National Science Foundation. Prof. Wei has a broad research interest, covering statistics physics, optics, mechanics, material engineering, sensors, and biomimetics, and has made original contributions in single file diffusion, nanoparticle plasmonic coupling, Brownian motion of low symmetry particles, command of living matter, and photoalignment. He proposed the concept of plasmonic metamasks and invented a photopatterning technique allowing for photopatterning arbitrary designer molecular orientations in single exposure, just like photolithography. This technique is important for liquid crystal polymer flexible substrates, reconfigurable metamaterials, optoelectronic devices, liquid crystal elastomers and biomedical applications. His research has been supported by National Science Foundation, Department of Energy and Samsung Electronics.

Personal Profile

Qi-Huo Wei graduated from Department of Physics, Nanjing University in 1993 with a PhD in condensed matter physics. Prior to joining SUSTech, he was a tenured professor at the Liquid Crystal Institute and Department of Physics in Kent State University in US. He was a recipient of Alexander von Humboldt research fellow and the CAREER award of National Science Foundation. Prof. Wei has a broad research interest, covering statistics physics, optics, mechanics, material engineering, sensors, and biomimetics, and has made original contributions in single file diffusion, nanoparticle plasmonic coupling, Brownian motion of low symmetry particles, command of living matter, and photoalignment. He proposed the concept of plasmonic metamasks and invented a photopatterning technique allowing for photopatterning arbitrary designer molecular orientations in single exposure, just like photolithography. This technique is important for liquid crystal polymer flexible substrates, reconfigurable metamaterials, optoelectronic devices, liquid crystal elastomers and biomedical applications. His research has been supported by National Science Foundation, Department of Energy and Samsung Electronics.

Research Areas:
◆ Nanomanufacturing: large area molecular alignment techniques and instrumentation, programmable 3D origami, micro/nano optoelectronic devices
◆ Intelligent soft matter:collective behavior in artificial and biological living matter, 3D/4D printing of stimuli-responsive soft matter, colloidal matter
◆ Biomimetics: microfluidics and microoptics in biological systems, biosensors, and tissue engineering.

Working Experience:
◆ December 2019-, professor at the Department of Mechanical and Energy Engineering, Southern University of Science and Technology,
◆ Sept. 2017-Nov. 2019, professor, Liquid Crystal Institute and Department of Physics, Kent State University
◆ Sept. 2011-Aug. 2017,associate professor, Liquid Crystal Institute and Department of Chemical Physics, Kent State University
◆ July 2006-Aug. 2011,assistant professor, Liquid Crystal Institute and Department of Chemical Physics, Kent State University
◆ June 2003-June 2006, staff scientist, Applied Nanobioscience Center, Arizona State University
◆ June 2001-May 2003, assistant research engineer, Mechanical and Aerospace Engineering, UCLA
◆ July 1999-July 2000, postdoctor, Department of Physics and Astronomy, University of Pittsburgh
◆ Feb. 1997-June 1999, AvH research fellow, Department of Physics, University of Konstanz, Germany
◆ May 1993-Oct. 1996, lecturer-associate professor, Biomedical Engineering Dept, Southeast University, China.

Education:
◆ Nanjing University, PhD in Condensed Matter Physics, 1993
◆ Nanjing University, MS in Physics 1989
◆ Nanjing University, BS in Physics, 1986 
 
Honors:
◆ 2017 Best Paper Award by Crystal
◆ 2011 CAREER award of National Science Foundation
◆ 2009 Farris Family Innovation Award, Kent State University
◆ 1996-1998 Alexander von Humboldt Research Fellow
◆ 1995,Science and Technology Progress Award, Ministry of Education
 

Research

◆ Nanomanufacturing: large area molecular alignment techniques and instrumentation, programmable 3D origami, micro/nano optoelectronic devices

◆ Intelligent soft matter:collective behavior in artificial and biological living matter, 3D/4D printing of stimuli-responsive soft matter, colloidal matter

◆ Biomimetics: microfluidics and microoptics in biological systems, biosensors, and tissue engineering.


Publications Read More

2021-2024

◆ H. Chen, H. Yun, M. Jiang, and Q.-H. Wei.“Ultracompact optical microscopes made of liquid crystal Pancharatnam–Berry optical elements.” J. Opt. Soc. Am. B 41, 2661-2667 (2024)
◆ H. Yun, S. Jiang, H. Chen, Y. Zhu, X. Xu, B. Li, Peng Xi, Miao Jiang, and Q.-H. Wei.“Ultra-high spatial resolutions in photopatterning molecular orientations.” Opt. Express 32, 31107-31119 (2024)
◆ Liu, S., H., Yu, M. Jiang, L. L. Ma,  Y. Q. Lu,  Q.-H. Wei. “Dual diffraction bands of heliconical liquid crystal gratings.” Physical Review Materials8(8), 085201 (2024)
◆ S. Yi, Z. Hong, Z. Ma, C. Zhou, M. Jiang, X. Huang, M. Huang, S. Aya, R. Zhang, Q.-H. Wei. “Chiral {pi} Domain Walls Composed of Twin Half-Integer Surface Disclinations in Ferroelectric Nematic Liquid Crystals.” arXiv preprint arXiv:2406.13326 (2024)
◆ Z. Ma, M. Jiang, Y. Song, A. Sun, S. Yi, C. Zhou, Q.-H.Wei. “Half-integer Vortices Paired via String Micelles in Ferroelectric Liquid Crystals Facilitated by Ionic Polymer Doping.” arXiv preprint arXiv:2406.00994 (2024)
◆ S. Yi, H. Chen, X. Wang, M. Jiang, B. Li, Q.-H.Wei, R. Zhang. “Line defects in nematic liquid crystals as charged superelastic rods with negative twist–stretch coupling.” arXiv preprint arXiv:2312.14735 (2023)
◆ H. Yu, M. Jiang, H. Yun, Y. Zhu, Y. Qi, Z. Zhou, I. Chaganava, Q.-H. Wei. “Diffraction-limited flat reflective microlenses by plasmonic photopatterning of molecular orientations.” J. Opt. Soc. Am. B 40, 2796-2800 (2023)
◆ Jiang, M., Zhang, X., Fezzaa, K., Reiter, K. E., Kramer-Lehnert, V. R., Davis, B. T., Q.-H. Wei & M. S. Lehnert. “Adaptations for gas exchange enabled the elongation of lepidopteran proboscises.” Current Biology33(14), 2888-2896(2023)
◆ S. Liu, H. Yu, M. Jiang, J. Feng, and Q.-H. Wei. “Numerical study of transmissive liquid crystal Pancharatnam–Berry gratings with small periods.” J. Opt. Soc. Am. B 40, 431-435 (2023)
◆ H. Chen, M. Jiang, Y. Guo, I. Chaganava, & Q.-H.Wei.” Nematic–isotropic phase transitions in thin slabs of liquid crystals with topological defect arrays.” Soft Matter19(45), 8863-8870 (2023)
◆ M. Jiang, Y. Guo, R. L. B. Selinger, O. D. Lavrentovich, Wei, Q.-H., Designing, generating and reconfiguring disclination interconnects in nematic liquid crystals. Liquid Crystals, 1–9 (2023)
Wei Q H, Yu H, Guo Y, et al. Photopatterning of molecular orientations: U.S. Patent 11,586(2023)

◆ Guo, Y., Jiang, M., Afghah, S., Peng, C., Selinger, R. L. B., Lavrentovich, O. D., Wei, Q.-H., Photopatterned Designer Disclination Networks in Nematic Liquid Crystals. Adv. Optical Mater. 2021, 2100181.

 

 

Before 2021

Nanomanufacturing, intelligent soft matter

◆ Y. Guo, M. Jiang, C. Peng, K. Sun, O. Yaroshchuk, O. Lavrentovich, Q.H. Wei, “High-Resolution and High-Throughput Plasmonic Photopatterning of Complex Molecular Orientations in Liquid Crystals”, Adv. Mat. 28, 2353(2016)

◆ M. Jiang, Y. Guo, H. Yu, Z. Zhou, T. Turiv, O.D. Lavrentovich, Q.H. Wei, “Low f‐Number Diffraction-Limited Pancharatnam-Berry Microlenses Enabled by Plasmonic Photopatterning of Liquid Crystal Polymers”, Adv. Mat. 31, 1808028 (2019)

◆ M. Jiang, H. Yu, X. Feng, Y.Guo, I. Chaganava, T. Turiv, O.D. Lavrentovich, Q.H. Wei, “Liquid Crystal Pancharatnam-Berry Micro-Optical Elements for Laser Beam Shaping”, Adv. Opt. Mat. 6, 1800961(2019)

◆ G. Babakhanova, T. Turiv, Y. Guo, M. Hendrikx, Q.-H. Wei, A. PHJ Schenning, D. J. Broer, O. D. Lavrentovich “Liquid crystal elastomer coatings with programmed response of surface profile”, Nature Comm. 9, 1130 (2018)

Micro/NanoOptics

◆ H. Yu, M. Jiang, Y. Guo, T. Turiv, W. Lu, V. Ray, O.D. Lavrentovich, Q.H.Wei, “Plasmonic Metasurfaces with High UV-Vis Transmittance for Photopatterning of Designer Molecular Orientations”,Adv. Opt. Mat. 9, 1900117(2019)

◆ F. Wang, A. Chakrabarty, F. Minkowski, K. Sun, Q.-H. Wei, “Polarization conversion with elliptical patch nanoantennas”, Appl. Phys. Lett. 101, 023101 (2012) (cover article, one of 20 most viewed papers)

◆ F. Minkowski, F. Wang, A. Chakrabarty, Q.-H. Wei, “Resonant Cavity Modes of Circular Plasmonic Patch Nanoantennas”, Appl. Phys. Lett. 104, 021111 (2014).

◆ Z.W. Liu, Q.-H. Wei, X. Zhang, “Surface Plasmon Interference Nanolithography (SPIN)”, NanoLett 5, 957(2005)

Q.-H. Wei, K.-H. Su, S. Durant, X. Zhang, “Plasmon Resonance of Finite One-dimensional Nano Au Particle Chains”, NanoLett 4, 1067 (2004)

◆ K.-H. Su, Q.-H. Wei, X. Zhang, J. Mock, D.R. Smith, and S. Schultz, “Interparticle Coupling Effects on Plasmon Resonances of Nano Metallic Particles”, NanoLett 3, 1087 (2003)

Soft Matter Physics

◆ A. Chakrabarty, A. Konya, F. Wang, J.V. Selinger, K. Sun, Q.H. Wei, “Brownian motion of boomerang colloidal particles” Phys. Rev. Lett. 111, 160603 (2013) (Covered by Physics Focus News, IOP Physics World News, physics.org, IOP 10 picture of the year)

◆ A. Chakrabarty, A. Konya, F. Wang, J.V. Selinger, K. Sun, Q.H. Wei “Brownian motion of arbitrarily shaped particles in two dimensions”, Langmuir 30, 13844-13853 (2014)

◆ Y. Guo, S. Afghah, J. Xiang, O.D. Lavrentovich, R.L.B. Selinger, Q.H. Wei, “Cholesteric liquid crystals in rectangular microchannels: skyrmions and stripes” Soft Matter 12, 6312-6320(2016).

Q.-H. Wei, C. Bechinger, P. Leiderer, “Single-file diffusion of colloids in one-dimensional channels”, Science 287, 625(2000)

Q.-H. Wei, C. Bechinger, D. Rudhardt, P. Leiderer, “Experimental study of laser induced melting in two-dimensional colloids”, Phys. Rev. Lett. 81, 2606 (1998)

Q. H. Wei, and X.-L. Wu, “Grain Boundary Dynamics under Mechanical Annealing in Two-dimensional Colloids”, Phys. Rev. E 70: 020401 (2004)

Biomimetics, biosensors, living matter

◆ Ye, D.Li, M.Xie, Y.Chen, B.Han, Y.Liu, S.Wei, Q.‐H.Gu, N.Optical Imaging and High‐Accuracy Quantification of Intracellular Iron ContentsSmall 2020, 2005474.

◆M. S. Lehnert and Q.-H. Wei, “Hierarchical Microstructures and Functions of Lepidopteran Proboscis Cuticle”, (Chapter for Book “Mouthparts of Insects” edited by Harald W. Krenn, 2019)

◆ F Wang, BP Joshi, A Chakrabarty, H Zhang, QH Wei, “Plasmonic Patch Nanoantennas for Reproducible and High-Sensitivity Chemical Detection with Surface-Enhanced Raman Spectroscopy” ECS Transactions 85, 77(2018)

◆ C. Peng, T. Turiv, Y. Guo, Q.H. Wei, O.D. Lavrentovich, “Command of active matter by topological defects and patterns”, Science 354, 882 (2016).

◆ F. S. Zhou, and Q.-H. Wei, “Scaling Laws for NanoFET Sensors”, Nanotechnology 19, 015504 (2008) (most downloaded papers in 3 months of publication)

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People Read More

Join us

Information of Graduate Studies
Welcome students to apply for the MSC & PhD program and perform research in wei-lab!
Basic requirements: 
1) Experimental experience and solid communications/math/physics knowledge basis;   
2) Students majoring in mechanics, robotics, optics, advanced manufacturing, soft matter and other related majors are welcome to apply!
Notes:
1) Applicants majoring in condensed matter physics, biophysics or materials science, please contact Prof. Wei (weiqh@sustech.edu.cn) in advance;
2) See the information about the paper exam and the interview exam from SUSTech Graduate School for details.
 
Positions Available for Postdocs and Research Assistant Professor
Prof. Qi-huo Wei is recruiting research assistant professor and postdoctoral fellows to engage in (1) research on living matter, including the interaction of motor cells and orientational microenvironments, and the swarming behavior of robots; (2) insects Bionic research. Experience in living matter, biophysics, cell culture, biological cryo-EM (sectioning, staining, electron microscopy) will be preferred. 
 
Research assistant professor
Recruitment requirements:
1) Ph.D. degrees in condensed matter physics, optics, biophysics or material science and for more than 2 years;
2) Outstanding scientific research experience and strong experimental skills;
3) The candidate must have published at least 3 high-level papers;
4) Good English writing and communication skills,hard-working and team spirit.
Benefits during employment:
1)The basic annual salary from 350k to 450K CNY (Pre-tax), commensurating with rank and experience. 
2)There are other benefits such as meal supplements, festival bonus, high-temperature subsidies, and year-end awards, as well as the local government compensations.
Postdoctoral position
Recruitment requirements:
1) Ph.D. degrees in condensed matter physics, optics or material science;
2) Outstanding scientific research experience and strong experimental skills;
3) The candidate must have published at least 3 high-level papers;
Benefits during employment:
1)Remuneration and benefits starting from 330k CNY (~49k$), commensurating with rank and experience. 
2)Particularly outstanding candidates can apply for the university president's excellent postdoctoral fellowship, with an annual salary reaching 550k CNY (Including Guangdong Provincial and Shenzhen subsidies).
 
Research directions:
1) 4d printing, two photon photopolymerization, programmed origami, liquid crystal polymers;
2) Flat micro/nano-optical devices, design and fabrication;
3) Active matter, design and fabrication of new micro-swimmers;
4) Biomimetics, micro-optics and microfluidics in biological systems.
5) Advanced nanomanufacturing, photopatterning of molecular orientations.
Priority will be given to candidates with experience in related research areas.
Interested candidates should contact Prof. Qi-Huo Wei with a detailed resume in PDF format for further information: weiqh@sustech.edu.cn.
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Email

weiqh@sustech.edu.cn

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