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Intelligent Nano-Optics

Group Leader: Dr Hong LIU
Principal Scientist
M. Eng, PhD from National University of Singapore
Research profile: ; ; ;
Email: h-liu@imre.a-star.edu.sg

Welcome to Dr Hong LIU’s research group in Institute of Materials Research and Engineering (IMRE), òòò½Íø, Technology and Research (A*STAR), Singapore. 

The Intelligent Nano-Optics (INO) group is primarily dedicated to the study of the fundamental light-matter interactions at subwavelength scale and potential applications such as next-generation neuromorphic photonics, quantum light sources and flat optical components. Leveraging the well-established capabilities of design, simulation, nanofabrication and state-of-the-art characterization, we have investigated the optical resonators interactions with light altered by the size, shape, assembly and dimensionality to realize extreme control and manipulation of light’ properties at nano-meter scale. Complex and hybrid photonic structures have been realized by the advanced top-down and bottom-up fabrication techniques to achieve high Q-factors and efficiency, which enable us to tackle the challenging issues towards real applications. 

Research Areas

  • van der Waals (vdW) heterostructures for ultrahigh efficiency and low power neuromorphic photonics
  • Integrated nonlinear meta-optics for optotwistronics technology
  • Nonlinear structured light
  • Wafer-level nanoimprint lithography for scaling-up of flat optics

Figure 1-Printed Mico and Nano Optics

Competitive Research Grants

  • Optotwistronics: Enabling Ultrahigh-efficiency Nanoscale Nonlinear Light Sources. NRF CRP 31st Call, Lead PI.
  • Loading Singular Nanostructures with Monolayer Semiconductors for Nonlinear Structured Light Generation, The 2024 MTC Individual Research Grants (IRG), Lead PI.
  • National Semiconductor Translation and Innovation Center (NSTIC), NRF Whitespace, Team PI (WP4).
  • van der Waals Engineering for All-optical Neuromorphic Chip, MTC Programmatic Fund, Team PI(WP3). 
  • Nanoantenna spatial light modulators for next-gen display technologies (NSLM), AME Programmatic Fund, Team PI (WP8).

Job Vacancies

We are always looking for highly motivated fresh Ph.D graduates and postdoctoral researchers with expertise of nonlinear optics and meta-optics, 2D photonics and optoelectronics. to find the current positions on nonlinear meta-optics and optotwistronics. Interested candidates please send your CV to h-liu@imre.a-star.edu.sg. Only shortlisted candidates will be contacted

Hightlights & Achievements

The team delivers high impactful research and technology development in advanced nano-optics and nanoprinting technologies through the collaboration with international and local universities. Our recent achievements are highlighted below. 

INO-Figure 4

 

  • Nonlinear meta-optics with high Q-factor and conversion efficiency ; )
  • Photonic bandgap engineering of 3D photonic crystals via TPL ()
  • Low loss dielectric and tunable metasurfaces of emerging optical materials (perovskite, wide bandgap semiconductors, etc.) (; ; )
  • Complex wavefront engineering and diffractive flat optics (; ; ; ; ; ; )
  • Nanoplasmonics (; ; )
  • A full suite of advanced nanofabrication techniques, including electron beam lithography, focused ion beam lithography, dry etching, PVD, CVD, atomic layer deposition, and relevant characterization techniques.

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