Tsinghua University

Chinese Academy of Sciences

Jiawei Yang

Wei Zhang

Fang Liu

Xue Feng

Yidong Huang

Kaiyu Cui

Huaizhou Zhao

Junling Gao

Jian Xiong

Siyi Chang

A micro spectrum chip based on units of different shapes. The micro spectrum chip includes a CIS wafer and an optical modulation layer. The optical modulation layer includes several micro-nano structure units arranged on the surface of a photosensitive area of the CIS wafer. Each micro-nano structure unit includes a plurality of micro-nano structure arrays, and in each micro-nano structure unit, different micro-nano structure arrays are two-dimensional gratings composed of internal units of different shapes. In each micro-nano structure unit in this scheme, different micro-nano structure arrays have different shapes of internal units, and each group of micro-nano structure arrays have different modulation effects on lights with different wavelengths. The degree of freedom of 'shape' is fully utilized to obtain a rich modulation effect on the incident light. A two-dimensional grating structure based on internal units of different shapes is utilized.

Micro spectrum chip based on units of different shapes

An optical artificial neural network intelligent chip, a preparation method thereof and an intelligent processing apparatus. The optical filter layer serves as the input layer of the artificial neural network. The image sensor serves as the linear layer of the artificial neural network. The filtering effect of the optical filter layer on the incident light entering the optical filter layer serves as the connection weight from the input layer to the linear layer, such that the related functions of the input layer and the linear layer in the artificial neural network are achieved by the optical filter layer and the image sensor in the intelligent chip in a hardware manner, and no complicated signal processing and algorithm processing corresponding to the input layer and the linear layer need to be performed in the subsequent artificial neural network intelligent processing using the intelligent chip.

Optical artificial neural network intelligent chip, preparation method thereof and intelligent processing apparatus

Provided by the present invention is a magnesium-antimony-based (Mg&#x2014;Sb-based) thermoelement, a preparation method and application thereof. The Mg&#x2014;Sb-based thermoelement comprises: a substrate layer of a Mg&#x2014;Sb-based thermoelectric material positioned in the center of the thermoelement, transitional layers that are attached to the two surfaces of the substrate layer, and two electrode layer that are respectively attached to the surfaces of the two transitional layers; the transitional layers are made of a magnesium-copper alloy and/or magnesium-aluminum alloy, and the electrode layer is made of copper. The transitional layer and the electrode layer which are developed in the present invention and which are suitable for a Mg&#x2014;Sb-based thermoelectric material have great significance and prospects in application. The electrode layer enable the Mg&#x2014;Sb-based thermoelectric material to have an opportunity to enter the market and realize commercialization. Compared with the existing bismuth telluride thermoelectric devices in the market, the thermoelectric device prepared has lower costs, may simultaneously save the rare element tellurium, and is beneficial in saving energy and protecting the environmental.

Mg-Sb-based thermoelement, preparation method and application thereof

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Beijing, China

Jiawei Yang