DISPLACEMENT MEASUREMENT USING A TWO-PROBE IMPLEMENTATION OF MICROWAVE INTERFEROMETRY

Displacement Measurement Using a Two- Probe Implementation of Microwave Inter- Ferometry

This paper presents a two-probe implementation of microwave interferometry for displacement measurement at an unknown reflection coefficient. Theoretically, the proposed technique gives the exact value of the displacement for reflection coefficients (at the location of the probes) no greater than 1/ √ 2 and in the general case determines it to a worst-case accuracy of about 4.4% of the operatin...

Subnanometer Displacement Measurement Using Common-path Grating Interferometry

Design and Simulation of piezorestive pressure sensor for AFM Probe the displacement measurement

investigating pressure applied in surface vertically that is done by use of mechanical procedures isn’t efficient to measure pressure applied in inner surface of reservoir or pipes having gas due to entering pressure into whole walls and different surfaces. So, in order to measure this kind of pressure, several studies were conducted in past decades and also various procedures were proposed tha...

Evaluation of Langmuir probe ion density measurement in weakly ionized discharges using plasma oscillation probes and microwave interferometry

A comparison study is made of the classical theories of the determination of the ion density Ni from the ion current Ii to a cylindrical Langmuir probe vs bias voltage Vb in weakly ionized RF plasmas. A broad parameter range is examined in a commercial inductively coupled plasma (ICP). Accurate local electron density Ne values (Ne,MWI) obtained from Abel inversion of chord-averaged microwave in...

Measurement and preparation using two probe modes.

We consider the measurement of two conjugate variables by coupling the system of interest to two independent probe modes. Our model consists of linearly coupled boson modes which can be realized by quantum optical elds in the rotating wave approximation. We approach the setup both as a device to extract observable information and to prepare an emerging quantum state. The initial states of the p...