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Direct laser writing to fabricate capacitively transduced resonating sensor

Published: 01 February 2020 Publication History

Abstract

This article reports on laser technology based fabrication approach to develop a micro-size capacitive gap based transducer useful for a variety of applications. A low-cost prototype has been fabricated via a rapid and advanced laser micro-milling technique to achieve a parallel kerf-width (capacitive gaps) of about 60 µm into a piece of aluminum and a stainless steel each of 1 and 2 mm thickness, respectively, thus leading to a high-aspect ratio (> 33) structure. A device is demonstrated to facilitate actuation via electrostatic means and sense a capacitive change across its electrode. Experiments have been performed with a structure made of aluminum. Results comprising analytical modeling, fabrication, and electrical characterization are presented. An applicability of a device as a two degree-of-freedom resonating mode-localization sensor that employs a weak electrostatic coupling is demonstrated to offer vibration amplitude based sensitivity to a relative change in the stiffness. This sensor is able to resolve a minimum stiffness perturbation (normalized), δkmin=ΔkKeff of the order of 7.98 × 10−4.

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  • (2022)Application Research of Manuscript Writing Robot Based upon Laser Sensor in News Dissemination FieldWireless Communications & Mobile Computing10.1155/2022/43725272022Online publication date: 17-Feb-2022

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      Published In

      cover image Microsystem Technologies
      Microsystem Technologies  Volume 26, Issue 2
      Feb 2020
      369 pages
      ISSN:0946-7076
      EISSN:1432-1858
      Issue’s Table of Contents

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      Springer-Verlag

      Berlin, Heidelberg

      Publication History

      Published: 01 February 2020
      Accepted: 15 July 2019
      Received: 04 May 2019

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      • (2022)Application Research of Manuscript Writing Robot Based upon Laser Sensor in News Dissemination FieldWireless Communications & Mobile Computing10.1155/2022/43725272022Online publication date: 17-Feb-2022

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