Metasurfaces hold significant application potential in polarization-multifunctional optical systems and devices, enabling the realization of various advanced optical functionalities at the subwavelength scale, such as spin multiplexing, optical waveplates, vectorial holography, Poincaré beams, etc. These functionalities require metasurfaces to simultaneously encode the polarization state, ampl...
Recently, Prof. Zhanshan Wang and Prof. Xinbin Cheng's team member Prof. Zhenyue Chen, in collaboration with Professor Daniel Razansky's team from the University of Zurich and ETH Zurich in Switzerland, achieved a significant breakthrough in functional neuroimaging. The joint team developed a multimodal hybrid optical-magnetic resonance imaging platform termed as HyFMRI, achieving the first sim...
Recently, the research team from the School of Physical Science and Engineering at Tongji University has achieved significant progress in the field of topological physics. The team discovered a new class of topological edge states in non-Hermitian gapless systems, fundamentally challenging the traditional bandgap-based theoretical framework of topological protection. The related research findin...
Recently, a groundbreaking study led by Prof. Yuzhi Shi from the research team of Profs. Zhanshan Wang and Xinbin Cheng at the School of Physics Science and Engineering, Tongji University, has enriched the conventional understanding of optical torques (OTs). The team discovered a novel mechanism where spin angular momentum (SAM) gradients induce measurable OTs on non-absorbing, symmetric dielec...
AI-enabled computational imaging technology enables high-quality infrared imaging using simple and compact optical systems. However, the reliance on specialized image reconstruction algorithms introduces additional detection delays and significantly increases computational and power demands. These factors pose serious challenges for deploying computational imaging in high-speed, low-power scena...
Recently, Associate Professor Zeyong Wei and Professor Yuzhi Shi from Professors Zhanshan Wang and Xinbin Cheng’s team at the School of Physics Science and Engineering, Tongji University, in collaboration with Professor Din Ping Tsai from City University of Hong Kong achieve broadband, wide-angle, and versatile metasurface illusions with inverse synthetic aperture radar imaging. This work prop...
Nano-positioning technology serves as the foundation of modern precision engineering. Take the integrated circuit field as an example: the ultra-precision positioning technology for large-stroke wafer stages is one of the key core technologies in lithography machines. In the allocation of overlay errors, the nano-positioning error of the lithography machine's wafer stage typically accounts for ...
Recently, the team of professor Zhanshan Wang and Xinbin Cheng from the School of Physics Science and Engineering at Tongji University achieved high-speed sorting of sub-20 nm chiral particles utilizing a mirror-enhanced toroidal metasurface. This work has significant implications for high-speed enantiomer separation and holds great potential for applications in medical research, industry, and ...
Scientific discoveries and innovations rely on the constantly emerging techniques of observation and instrumentation. The advantages of extreme ultraviolet, X-ray, and neuron include shorter wavelengths and higher photon or particle energy, attributing them with a higher resolution, “core” level detection of electron state, and larger penetration depth when applied as a technique of observation. Therefore, they have been widely used in microscopy and telescope applications, as well as for the fabrication of ultra-high precisions under extreme conditions.
High-power laser systems and equipment have a significant impact on the solution of major scientific problems, the progress of the national defense equipment, and the development of the high-tech industries, whose core components as well as the weakness are the laser coatings. The research group built a development platform that includes the optimization design of laser coatings, all-flow-control preparation, performance characterization, and system application. They studied the interaction mechanism between the laser and materials and explored the loss mechanism and control techniques of laser coatings. An effective regulation of the coating structure, optical properties, and environmental adaptability has been achieved, which contributes to the development of the high-power laser system.
Being a precision measurement technology on the nanometric scale, nanometrology is a fundamental technology adopted by advanced nano-fabrication. The development of nanometrological standard substances is vital, not only to guarantee the dissemination of traceability, an elementary topic in nanometrology, but also to ensure the unity and accuracy of nano-geometric measurements. Thus far, nanotechnology is evolving towards the direction of reducing characteristic dimensions, which has forced the advanced manufacturing industry to urgently find nano-length standard substances with high accuracy and stability, including the linewidth, step height, linear scale, pitch (one-dimensional grating, 1D), and grid (two-dimensional grating, 2D).
By virtue of “artificial microstructures”, multi-dimensional optical field modulation can be achieved in micro-nano optics, including the amplitude, phase, polarization, and wavefront, which significantly surpasses the modulation with natural materials. Therefore, research at the micro-nano level is considered a vital branch of optics. Micro-nano optical devices not only promote the thinning and integration of optical systems, but also significantly empower the advancement of intelligent sensing technology, which is one of the key strategical areas of national interest.
Virtual 3D brings new experiences such as sight, sound and touch, and virtual walkthrough is a new experience mode derived from it
©2022 Institute of Precision Optical Engineering TechnologyBeijingicp bei 05051632-16
Copyright: Institute of precision optical engineering technology, Tongji University
Tel: +86-21-65984652
Address: 1239 Siping Road, Shanghai, P.R. China
E-mail: 1986jiangli@tongji.edu.cn
