Chinese Version Light学术出版中心
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Issue 2 ， 1998
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Electron Tunnel Sensor Principles,Present Situation and Prospect
Abstract：A new class sensors based on electron tunneling effect are used to detect position.The device has a compact mechanical structure and novel sensitivity that will not decreases with the scales,and can be easily operated.Accelerometers,infrared detectors,magnetometers,and tactile sensors have been designed,built and tested.These sensors provide extremely high sensitivity,high bandwidth and wide dynamic range,and allowed miniaturization and integration.This paper has described the electron tunneling sensors performance and discussed their future development.Keywords：Tunnel;accelerometer;infrared detector;Magnetometer;tactile sensor- 35
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Published：2020-08-12 -
Presence and Future Developing Tendency of Ion etching Technology
Abstract：Several ion etching technology are introduced in this paper.They are plasma ion etching,reaction ion etching,ion milling,focusing ion etching.Further developing directionn for the technology is discussed.Keywords：Ion etching technology;Plasma ion etching;Reaction ion etching;Ion milling;Focusing ion etching- 40
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Published：2020-08-12 -
Micro Measurement: Development and Application
Abstract：The intention of micro measurement technology is described. Besides, the characteristic, function, position and the requirement for 21 century are analyzed. Then the develop trend of this technology is look forward.Keywords：Micro measurement;Intention;Development- 42
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Published：2020-08-12 -
Fourier Transformation of Investigating Anomalous Skin Effect
Abstract：The fourier transformation is used to investigate the skin effects in the interaction of short laser pulses with dense plasmas by plasma dispersion function.With this method,the field amplitude in the plasma can be represented explicitly in terms of electric conductivity.The normal and anormalous skin effects can be described through one equation.The calculation results are in agreement with references for equivalent parameters.The calculation amount is greatly descreas and the physical meaning is very elear.The field amplitude is considerably enhanced due to the anomalous skin effect,even for constant collision frequency,for deeper positions inside a target,which have not been studied yet.Keywords：Anomalous skin effect;Fourier transformation;The interaction of short laser pulses with plasmas- 84
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Published：2020-08-12 -
The Dual Fluorescence of Dimethylaminobenzonitril Excited by Two photon Absorption
Abstract：We described the dual fluorescence of DMABN excited by two photon absorption.The experimental results are the same with the one photon absorption’s.That means from ground state to excited state isn't forbidden even consider the symmetrical selection rules.Keywords：Dimethylaminobenzonitril;Dual fuorescene;Two phototn absorption- 53
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Published：2020-08-12 -
Studies of Preparation and Characteristics in Photothermo sensitive Microcrystal Glasses
Abstract：Glasses in the SiO2 R2O Al2O3 ZnO B2O3(R=Li、Na、K)system were prepared at 1320—1420℃.After UV photolithograph,the samples were treated at 400-560℃ for 2-5h.A UV lamp is used as light resource for photolithograph,the most intensive wavelength is at 2537.The effects of glass composition and photothermo sensitive components on the microcrystal property were studied.The volume effect was proved by measuring the density variation of the microcrystals.The microcrystal phase was characterized by x ray powder diffraction as Li2O·SiO2 and grain size as 23.8nm.Keywords：Photothermo sensitive microcrystal glass;Photolithogroph;Volume effect- 28
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Published：2020-08-12 -
Analysis of Performance of the Neural Network Adaptive Control of Optical Dynamic Systems
Abstract：The similarities and differences of the routine NN system identification and chaos speedup system identification of the optical dynamic system are disscussed in this paper. The performance of the two corresponding NN control techniques are compared and analyzed as well. The general design principle of the NN control of the optical dynamic system are presented in the end of this paper.Keywords：Optical dynamic systems;Adaptive control;neural network;system identification- 33
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Published：2020-08-12 -
Application of Harmonic Gear Drive to 3-axes Measuring Machine
Abstract：This paper describes the application of a harmonic gear drive to the 3-axes measuring machine .By the use of some examples, how to select the structure of the transmission part of the machine is introduced and some factors to influence the transmission accuracy of the machine are also analyzed. Combined some actual structure ,the range of accuracy of the transmission part is calculated. At the last, some problems occurred in the actual situation are discussed.Keywords：Harmonic precision drive;Displacement accuracy;Error- 41
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Published：2020-08-12 -
A Study on Outstanding Phenomenon in Ultrasonic Vibration Turning
Abstract：In ultrasonic vibration turning,present work finds such an outstanding phenomenon that the surface roughness of the workpieces is lower than that of the cutters used to machine,which is contrary to the traditional cutting theory.In this paper,the experiments and theoretical analyses are made about the occurring conditions and regularities of this phenomenon,which enriches the ultrasonic vibration cutting theory.Keywords：Wltrasonic vibration turning;Outstanding;surface roughness- 46
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Published：2020-08-12 -
The Application of Excimer Laser Deep Lithography in LIGA Process
Abstract：In the paper an excimer laser lithography apparatus is described.This apparatus is applied in deep lithography for LIGA process successfully.The lithography experiment result shows us that excimer lasr deep lithography is very pratical to LIGA process.Keywords：MEMS;Micromachining;LIGA process;Lithography- 46
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- 8
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Published：2020-08-12 -
Micro Torque Dynamic Measurement
Abstract：This paper presents a new, noncontact and dynamic method to measure micro torque. The measure instrument is designed on the base of the fundamental experiments. Using this instrument, the results of the torque and velocity characters of a micro-motor are obtained.Keywords：Micro torque;noncontact measurement- 42
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Published：2020-08-12 -
A Experimental Research on Silicon Micromirror Arrays Made by Chemical Etching
Abstract：Micromirrors with good spherical profiles can be made on the Si{100} surface by wet chemical etching in KOH:H2O solutions.The mirror diameters span the range from a few micrometers to several millimeters and the range of f/D's obtainable starts at about 2.5 and goes up to at least 10.Some experiment and microphotos on micromirrors array have given in the paper.A semiempirical model is developed to design the arrays.Finally some discussions on the spherical formation theory and the focal point images are given.Keywords：Silicon micromirror;Micromaching;Microoptics;Geodesic lenses- 32
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Published：2020-08-12 -
Film Flattening in Image Remote Sensing
Abstract：A few mothed of film flattening are compaered.It must be pay attention to the noise and vibration in the pneumatic methed.Methed of caculation about vane of vaccum pump is described.- 82
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Published：2020-08-12 -
Simulation of Even Material Removal During Eccentric Plane Polishing by a Tin Polisher
Abstract：The even material removal in the contacting area between the surfaces of polisher and the samples being finished is important for the surface contour of the samples after polishing. This paper analyzes the differences of material removal of different positions on the sample surfaces theoretically as a function of rotating ratio of sample holder and main spindle, eccentric distance and rotating velocity. The edge effect when part of the sample surfaces do not keep in contact with the polisher continuously is discussed. The simulation shows that even material removal can be achieved while the rotating ratio is 1, and every position of sample surfaces keep touching the polisher during polishing.Keywords：Tin;polishing;Precision manufacture;Plane- 33
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Published：2020-08-12 -
The Concave Holographic Grating Double Monochromator of Cancellation in Dispersion
Abstract：The concave holographic grating doule monochromator of cancellation in dispersion is described in this paper,including its principle, main performane,and the test of the stray light which is this instrument’s important technology performance and practical application of this instrument.Keywords：Cancelling dispersion;Double monochromator;stray light;Linear dispertion;resolution- 54
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Published：2020-08-12 -
Program Controlled Amplifier and Its Typical Application
Abstract：The principle of the program controlled amplifier has been analysed.A method of amplitude control of an analog signal has been discussed. The controllable range and accuracy of the signal has been calculated. In addition, some other applications of the program controlled amplifier have been discussed.Keywords：Program controlled amplifier;Amplitude stabilizing;DC offset stabilizing;Interpolation- 37
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Published：2020-08-12 -
Bridge Elastic Signal Linearization by Way of A/D Convertor
Abstract：Through research on linearizing bridge elastic output of sensor signal ,the authors proposed a method of linearization by way of the proportion property of A/D convertor,including theoretical content and concrete circuits.Keywords：sensor;A/D convertor;Linearization;Bridge- 34
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Published：2020-08-12 -
Study on Photoelectric Control and Management of Library
Abstract：This paper introduces the method of recognizing the direction of the persionnel motion with photoelectric detector as well as recording the personal who exit or enter the library,This is important for achieving the advanced management of libray and also saving the energy.The structure of this system and the data processing method are also introduced.- 34
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Published：2020-08-12 -
Design and Experimental Study on Control System of Precise Injection Molding Based on PLC
Abstract：Based on key technologies of precision injection molding,this paper analyzes parameters and control strategy,such as cavity pressure,plasticizing position and temperature,etc.By adopting PLC and detecting cavity pressure directly,multi stage control system of injection molding is designed to control filling and multistage holding process.The experimental results are given and analyzed.Keywords：PLC;Precision injection molding;Plasticizing position;Cavity pressure- 53
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Published：2020-08-12 -
Software Relay Measurement for Inductosyn Sliding Scale
Abstract：A new technology used in inductosyn measurement,sliding scale software relay is studied in this paper.With the approach of static scale exciting and phase identifying,the technology can be used for long distance and high precisiion measurement.Finally,dynamic transmission error measurement results on a five meter lead screw grinding machine show that the proposed technology is feasible.Keywords：Inductosyn;Static scale exciting;Sliding scale connecting;Software relay- 29
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Published：2020-08-12 -
The Method of Micro tiny Displacement Measurement by Dimension Reduction
Abstract：This paper describes the principle of micro tiny displacement measurement by dimension reduction.Based the principle,micro tiny displacement test system has been established.The method of testing two dimentional displacement using a linear CCD is relized.Test system struction,realized method and test result are mentioned.Keywords：Measurement by dimension reduction;Micro tiny displacement;CCD- 40
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Published：2020-08-12 -
Application of Micro controller in Magneto optical Disk Dynamic Characteristics Testing System
Abstract：By taking advantage of micro controller having strong power of real time controlling,a principal and subordinate computer configuration is proposed,and the rational diffluence of analysis and controlling task is realized.It is also improved the reliability and maintenance,with the guaranty of high automation and real time level of the testing system.Keywords：Micro controller;Magneto optical;Dynamic characteristics;Testing- 26
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Published：2020-08-12
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