Home > More > Technology >article

This major in China, the three achievements of the three achievements of 2021!

Author:Huazhong University of Science Time:2022.06.22

recently

2021 China Optical Top Ten Progress selection results were announced

Wuhan Optoelectronics National Research Center of Huazhong University of Science and Technology

3 results on the list

Among them, one item was selected for basic research category

2 selected application research categories

Top Ten Progress of China Optics

The "Top Ten Progress of China Optics" has been initiated by China Laser Magazine since 2005. It has always paid attention to China's most cutting -edge optical research results and scientific research progress. It has successfully held 17 sessions so far. Essence The top ten progress in China has selected a total of 10 basic research and 10 application research progress. In addition, there were 19 achievements won the Top Ten Progress Nomination Awards for Basic Research and Application Research.

This selection activity adopts two ways: letter evaluation and final evaluation. It is composed of 44 scientific research institutes including Tsinghua University, Peking University, the University of Science and Technology of China, and the Institute of Physics of the Chinese Academy of Sciences, 79 academicians and well -known experts, and the final evaluation committee After several rounds of strict review, it was finally selected.

The "ghost" dual -song polarization is found in the dual refractive crystal

Elected to basic research category

The international research team led by Zhang Xinliang and Professor Li Peining's research team cooperates with the researcher Dai Qing of the National Nannan Science Center, Professor Qiu Chengwei, the National University of Singapore. Noodles-body "composite hyperbolized polarized stimulus electromagnetic waves have expanded the basic physical definition of polarized stimuli, and have important guiding significance for basic research in the fields of coagulative physical, optical physics, and electromagnetics.

Polaritons is a "semi-light-semi-substance" measurement of light and material strong coupling. , Realize the phenomenon of strange micro -nano optical phenomena and important applications.

Polarization stimulus is not only a cutting -edge science field of multi -disciplines such as condensed state physics, optical physics, and material science today, but also one of the research directions of my country's traditional advantages. As early as 1951, Mr. Huang Kun, a well -known semiconductor physicist in my country, proposed the classic theory of Shengzi polarization, which opened up this important research direction. At present, these different types of polarization stimulus are generally summarized into two types of communication modes: the surface mode of spread along the material interface and the body mode of transmission within the material.

The research results of the team broke through the inherent understanding and proved that in the crystal prescriptions of the opposite sex, there is a third polarization stress mode- "Ghost" dwelvapization of polarization stress mode. The polarized stimulus compound is not only bonded on the interface, and at the same time, it shows the tilted waves in the crystal.

Comparison of the characteristics of the characteristic electromagnetic field mode of the three polarization stimulus mode

(Part 1) "Ghost" polarization stimulus mode, (middle) surface mode, (below) body mode

The proof and discovery of this new type of polarization stimulus mode also shows that nearly 150 years after the establishment of the Maxwell equation, there is still new basic optical physics in the simplest system of traditional crystals.

With the help of nano imaging technology, researchers have proved the existence of this unique electromagnetic wave, showing the height of the heights in the plane. The transmission of ray on the right side of the circular metal antenna is observed, and the low loss transmission is up to 20 microns.

The near -field imaging experiment proves that the "ghost" polarization of the opposite sex spread characteristics

(Left) Experimental diagram, (medium) measurement of "ghost" polarization of polarization, highly distinguished near -field image, (right) Poya space distribution map

The research work has expanded the definition of "textbooks" of the basic physics of polarization stress, and predicts that through the dual -refractive crystal light shaft, it has always regulated the feasibility of polarization and stimulation, which has great application potential for the realization of strange micro -nano optical phenomena Essence

The relevant research results are the title "Ghost Hyper Bolic Surface Polaritons in Bulk Anisotropic Crystals", and published online on August 18, 2021 on Nature.

Radiation cooling optical super material fabric based on morphological grading structure

Elected application research

Professor Tao Guangming's team and the Ma Yaoguang team of Zhejiang University, including Hierarchical-Morphology based on the morphological grading structure, have designed and developed a passive cooling optical super material fabric (Metafabric). The surface of the human body cools nearly 5 ° C.

Due to the medium-infrared radiation spectrum of the normal temperature floor objects including the human body, it is basically overlapped with the atmospheric transparent window of 8-13 μm, which makes it possible to use the external space environment to cool down. Ultra -material fabric is based on the principle of radiation refrigeration. Through the shape -grading design concept, the surface objects facing the sky can be radiated to the universe through the atmospheric transparent window, and the outer space with the temperature is close to the absolute zero as a "natural cold storage", so as to thus Realize zero energy consumption cooling.

At the same time, super material fabrics are like a "maze" carefully designed for solar light. Most of the light scattering is reflected out, so as to avoid significant heating up. Therefore, in the outdoor exposure environment, the superc material fabric is like an air conditioner, maintaining the heat exchange channel of the smooth and universe, and it looks like a mirror to block the input of the solar radiation. Based on the above design, the super material fabric realizes 92.4%of the solar radiation reflectance and 94.5%of the medium -infrared emission rate, and it can cool nearly 5 ° C for the human body, which cools nearly 30 ° C inside the car model. Significance of passive cooling optical super material fabric diagram

Passive cooling optical super material fabric photo

The research results are published online on the Science on July 8, 2021 on July 8, 2021.

Line lighting modulation microcompos

Elected application research

The technology was invented by Luo Qingming's team. The fine structure of biological tissues is complicated and diverse. How to comprehensively and accurate observation of it in a three -dimensional space is recognized as a recognized technical problem. Especially the neurons of fluorescent marks, the diameter of the cell body is about 10-30 μm. The diameter of the axis diameter that is projected into the whole brain is only 0.2-0.5 μm from its extension. The distribution is often intertwined. When the peripheral cellular interference detects the weak fluorescent signals on the axis, it is like observing the little stars around the bright sun. In this case, traditional optical analysis methods are difficult to achieve.

Luo Qingming's team proposed a new principle of optical layers of micro-imaging-LINE-ILLUMINATION MODULATION (LIMO) micro-technique, which cleverly distributed the high-end lighting Gaussian distribution as a natural modulation. A multi -line detection method can record the signal of the samples by different intensity lighting, and only one -step computing is required to remove the same coking background signal and obtain a clear scorching optical layered image. For the first time, this method realizes both high -resolution, high -throughput, high robustness, high background suppression capacity, and high sensitivity. It breaks through the optical layer capability limit of the existing principles and fills the technical gap in related fields. Whether it is light road or algorithm, Limo fully reflects the wisdom of Avenue to Jane.

Limo microcosm imaging principle

Based on this, the team further developed the high-definition fluorescent micro-optical slicing of the micro-optical slicing (High-Definition Fluorescent Micro-OPTICAL Sectioning Tomography, HD-FMost) new technology, raising the whole brain optical imaging from high-resolution to high-definition standards It is currently the fastest -brain optical imaging technology at the current resolution of similar virus. HD imaging quality has brought significant efficiency improvement in data storage, transmission, processing, and analysis from data sources, providing a new solution for cracking the problem of big data bottlenecks in promoting and application in promotion and application. The realization of this technology will be expected to play a huge role in standardized and large -scale brain science research, and contribute to the discriminating megacities of single -cell distortion.

The maximum projection diagram of the mouse brain is partially amplified at the virus injection position

The research results are based on the title of "High-Definition Imaging USING LINE LINE-Illumination Modulation Microscopy", and published online on March 1, 2021 on Nature Methods.