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Phase-selective fluorescence of doped Ge_2Sb_2Te_5 phase-change memory thin films

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Chinese Optics Letters 2015年第12期13卷 50-53页

作者：张科林金成王阳 Key Laboratory of High Power Laser Materials Shanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences Department of Chemical Physics Fritz Haber Institute of the Max Planck Society

In this Letter, new concepts of fluorescence phase-change materials and fluorescence phase-change multilevel recording are proposed. High-contrast fluorescence between the amorphous and crystalline states is achieved in nickel- or bismuth-doped Ge;Sb;Te;phase-change memory thin films. Opposite phase-selective fluorescence effects are observed when different doping ions are used. The fluorescence intensity is sensitive to the crystallization degree of the films. This characteristic can be applied in reconfigurable multi-state memory and other logic devices. It also has likely applications in display and data visualization.

关键词： Amorphous films Crystalline materials Data visualization Fluorescence Germanium logic devices Phase change materials Semiconductor doping Thin films

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Nanomechanics: emerging opportunities for future computing

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Science China(Information Sciences) 2021年第10期64卷 245-247页

作者： Zenghui WANG Jiawei FANG Pengcheng ZHANG Rui YANG Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China University of Michigan-Shanghai Jiao Tong University Joint Institute Shanghai Jiao Tong University

The exploration for greater computing power has existed for a long time. Since the 1960 s, transistors in modern electronic computers have kept advancing following Moore’s ***, as silicon transistors continue to scale down, they face challenges such as increases in OFF-state leakage power due to the limited subthreshold swing, incompatibility with high-temperature operation, and lack of ***, new types of computing devices are being explored to address these problems.

关键词： MEMS NEMS mechanical computing logic devices switches resonators

Design of Quaternary ECL Q Gate

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Journal of Computer Science & Technology 1991年第1期6卷 32-36页

作者：庄南 Ningbo Normal College Ningbo 315211

A new explanation of quaternary Q gate expression in Post algebra is given in this paper by using transmission function theory proposed in [1] and the quaternary ECL Q gate circuit is de- *** SPICE2 simulation to this circuit has confirmed that it has desired logical function and is totally compatible with various quaternary ECL circuits proposed before.

关键词： Computer Metatheory Many Valued logics Computer Metatheory Threshold logic Computer Simulation logic Circuits, Emitter Coupled logic devices Gates

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Tunable thermo-optic switch based on fluid-filled photo-nic crystal fibers

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Optoelectronics Letters 2012年第6期8卷 430-432页

作者：王然姚建铨陆颖苗银萍赵晓蕾王若琪 Institute of Laser&Optoelectronics College of Precision Instruments and Optoelectronics EngineeringTianjin University Key Laboratory of Optoelectronics Information Technology Ministry of EducationTianjin University Tianjin Key Laboratory of Film Electronic and Communication Device School of Electronics Information EngineeringTianjin University of Technology

A tunable thermo-optic intensity-modulated switch is investigated theoretically and numerically. It is based on the infiltration of temperature-sensitive mixture liquids into index-guiding photonic crystal fibers （PCFs）. The switching function attributes to the thermo-optic effect of the effective refractive index of the cladding. The simulation illustrates that the switch presents a tunable transition point according to the concentration of the mixture liquids, and the on-off switching functionality can be realized within a narrow temperature range of 2 ℃. The switches have wide application for innovative all-in-fiber optical communication and logic devices.

关键词： logic devices Optical communication Refractive index Switching functions

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