Energy dissipation in small-diameter quartz crystal microbalance experimentally studied for ultra-high sensitive gravimetry

Takashi Abe, Li Li, Vu Ngoc Hung, Masayoshi Esashi

Research output: Contribution to conferencePaperpeer-review

3 Citations (Scopus)

Abstract

In this paper, the energy dissipation in small-diameter Quartz Crystal Microbalance (QCM) was experimentally studied for ultra-high sensitive gravimetric measurements. Newly developed deep reactive ion etching technology for smooth surface glass etching was used for the fabrication of small-diameter QCM. Minimum average surface roughness is 2.3 nm for an etching with SF6/Xe (=1/1) gases and 1.8 nm for SF6/Ar (=1/4) gases at a pressure of 0.2 Pa with a self-bias voltage of -390 V. The diameters of fabricated QCM were 0.2-1.0mm and their thickness was in the range of 6-82μm. The Q-factor of the fabricated QCM increases exponentially from 2000 to 10000 as the thickness decreases due to the decrease of supporting loss. Interestingly, the increases of Q-factor deviate from simple exponential function and show a maximum peak of the Q-factor (30000).

Original languageEnglish
Pages518-521
Number of pages4
Publication statusPublished - 2003 Jul 23
EventIEEE Sixteenth Annual International Conference on Micro Electro Mechanical Systems - Kyoto, Japan
Duration: 2003 Jan 192003 Jan 23

Other

OtherIEEE Sixteenth Annual International Conference on Micro Electro Mechanical Systems
CountryJapan
CityKyoto
Period03/1/1903/1/23

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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