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Title: Analytical investigation of the feasibility of sacrificial microchannel sealing for Chip-Scale Atomic Magnetometers
Authors: Tsujimoto, Kazuya
Hirai, Yoshikazu  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0003-0835-7314 (unconfirmed)
Sugano, Koji
Tsuchiya, Toshiyuki  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-7846-5831 (unconfirmed)
Tabata, Osamu  kyouindb  KAKEN_id
Author's alias: 辻本, 和也
田畑, 修
Issue Date: Mar-2014
Publisher: Springer Berlin Heidelberg
Journal title: Microsystem Technologies
Volume: 20
Issue: 3
Start page: 357
End page: 365
Abstract: An alkali metal vapor cell is a crucial component of the highly sensitive Chip Scale Atomic Magnetometers (CSAMs) that are increasingly deployed in a variety of electronic devices. Herein, we propose a novel microfabrication technique utilizing an array of microchannels at a bonded interface, to enable gas feedthrough for evacuation of unwanted gases from a vapor cell and subsequent introduction of an inert gas, followed by permanent sealing of the microchannels by reflow of a glass frit. The characteristics of glass frit reflow are analyzed to investigate the feasibility of using microchannels formed either on a silicon substrate, or embedded in a glass frit layer, with four different cross-sectional shapes considered. Prior to modeling the microchannels for simulation, the minimum cross-sectional size of a microchannel that fulfills gas feedthrough requirements was calculated and a value of 10 μm was determined based on a flow conductance model. The sealing of the microchannels was simulated using the finite element method (FEM) and the results revealed that flow resistance is a crucial design factor. Thus, embedded microchannel designs were more suitable for the proposed sealing technique than microchannel designs fabricated in silicon.
Rights: The final publication is available at Springer via http://dx.doi.org/10.1007/s00542-013-1895-8.
This is not the published version. Please cite only the published version.
この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
URI: http://hdl.handle.net/2433/199891
DOI(Published Version): 10.1007/s00542-013-1895-8
Appears in Collections:Journal Articles

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