Samsung Electronics Co., Ltd.

Tianjin University

Institute of Environmental and Operational Medicine, Academy of Military Medical Science, Academy of Military Science

Shuang Li

Dong Ming

Yu Wang

Jie Fu

Weixing Quan

Yuan Peng

Xiaoxiao Lin

Huanying Zhou

Dianpeng Han

Huaxing Wang

Kang Qin

Shuyue Ren

Jialei Bai

Zhixian Gao

Minghui Liu

Tie Han

Ruwen Jiao

Pengfei Li

Jin Wu

The present application relates to the technical field of wastewater treatment and rapid pollutant detection, in particular to a chitosan-polyacrylamide composite porous hydrogel, preparation and use thereof, and a metal ion-adsorbing and detecting reagent and method. The chitosan-polyacrylamide composite porous hydrogel of the present application is prepared by in situ polymerization of a chitosan sol, an acrylamide, a crosslinking agent and a surfactant into a mixed solution comprising liquid droplets, followed by steps of curing, washing, and freeze-drying. The present application further provides a metal ion-detecting reagent, which is obtained by adsorbing a color developing agent into the chitosan-polyacrylamide composite porous hydrogel as described above, wherein the color developing agent is a dye that changes color when encountering metal ions. The chitosan-polyacrylamide composite porous hydrogel of the present application has balanced mechanical properties and porosity.

Chitosan-polyacrylamide composite porous hydrogel, preparation and use thereof, and metal ion-detecting reagent and method

The present disclosure provides a drain-gate voltage excitation and source-drain current acquisition system and method for gas-sensitive organic field effect transistors (OFETs). The system includes an acquisition device and a gas-sensitive OFET array. The device includes a microcontroller module, a power supply management module, a voltage excitation module, a voltage regulation module, a transimpedance amplifier (TIA) module, a fully-differential low-side current detection module, a voltage acquisition module, a signal transmission module and an array switching module. In the present disclosure, the real-time monitoring of various harmful gases and the performance testing of the gas-sensitive OFETs are realized. The device has two current detection modes, thereby not only stabilizing drain electric potentials, but also enabling drain-source currents to be measured with sufficient accuracy.

Drain-gate voltage excitation and source-drain current acquisition system and method for gas-sensitive organic field effect transistors

Provided are a method and an electronic apparatus for a touch input performed via an edge screen. The method includes: sensing a first touch with respect to a first edge screen and a second touch with respect to a second edge screen; determining a first location on the first edge screen, the first location corresponding to the first touch, and a second location on the second edge screen, the second location corresponding to the second touch; sensing a first gesture having the first location as a start point thereof and a second gesture having the second location as a start point thereof; and performing a pre-set operation of the electronic apparatus, based on a combination of the first gesture and the second gesture.

Touch input method through edge screen, and electronic device

Provided is a device including a display unit configured to display a main window for displaying an image on a screen of the device, and to display, on the main window, a user interface for receiving an input for selecting an area of the image to be displayed on the main window and a first partial image selected via the user interface, a user input unit configured to receive a user input for selecting a point on the user interface; and a controller configured to control, when the user input for selecting the point on the user interface is received, the display unit to display a sub-window on the main window on which the first partial image is displayed, wherein the sub-window displays a second partial image of the image which corresponds to the selected point on the user interface.

Method and device for displaying image by using scroll bar

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Tianjin, China

Shuang Li