Alibaba Group Holding Limited

Beijing Institute of Graphic Communication

Yi Fang

Yan Li

Min Huang

Jiang Chang

Lixin Mo

Luhai Li

Fei Hong

Qingfang Zhang

Xiu Li

Zhiqing Xin

Diyang Han

Zhicheng Sun

A method of fabricating metasurface on skin for blood glucose detection, which relates to a flexible wearable electronic technology in healthcare. The blood glucose detection comprises: designing metasurface with a resonant ring structure cell, and building a model by simulating a relationship between blood glucose concentration and electromagnetic absorption property of the metasurface; preparing the metasurface on the skin; scanning the metasurface on the skin under different frequencies electromagnetic wave and acquiring a relationship curve between S-11 parameter and frequency; the change of blood glucose concentration is determined according to the resonant peak frequency shift in the relationship curve based on the model. It realizes the electromagnetic wave metasurface with a good skin biocompatibility, a stable electromagnetic property and a high glucose detection accuracy is directly structured on the skin, moreover, it can directly measure human blood glucose concentration without sampling human blood, realizing real non-invasive human blood glucose detection.

Method of fabricating metasurface on skin for blood glucose detection

The present disclosure relates to a method and a device for categorizing multimedia resources. The method includes: counting the numbers of icons for respective types of icons input by a user for a multimedia resource; and determining a category to which the multimedia resource belongs according to the numbers of the respective types of icons input for the multimedia resource. The method and device for categorizing multimedia resources according to the present disclosure can take respective types of icons input by the user for the multimedia resources into consideration when categorizing the multimedia resources, thereby improving the accuracy of the categorization of the multimedia resources.

Method and device for categorizing multimedia resources

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Beijing, China

Yi Fang