Skip to main navigation Skip to search Skip to main content

Robust silicon deep etching without thermal isolation in large mass and long spring structures

  • Yong Seok Lee
  • , Yun Ho Jang
  • , Jung Mu Kim
  • , Yong Kweon Kim*
  • *Corresponding author for this work
  • Seoul National University

Research output: Contribution to conferenceConference paperpeer-review

Abstract

This paper suggests a complete solution for thermal isolation which hinders a stable fabrication of silicon micro-structures with a large proof mass and long springs when the device is released using silicon deep etching process. Comprehensive analysis on a thermal equivalent circuit and the implementation of thin metal layers have successfully reduced a temperature rise down to 6.16°C whereas conventional fabrication method shows 217°C temperature rise in simulation. The reduction of the temperature rise leads to an improved spring width of 34.2 μm (20 μm without the metal layer) in case of the designed width of 40 μm. As a result, the resonant frequency of a proposed model is improved to 678 Hz while a reference model shows 439 Hz, where the simulated frequency of design is 754 Hz.

Original languageEnglish
Title of host publication2012 IEEE 25th International Conference on Micro Electro Mechanical Systems, MEMS 2012
Pages317-320
Number of pages4
DOIs
StatePublished - 2012
Event2012 IEEE 25th International Conference on Micro Electro Mechanical Systems, MEMS 2012 - Paris, France
Duration: 2012.01.292012.02.2

Publication series

NameProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
ISSN (Print)1084-6999

Conference

Conference2012 IEEE 25th International Conference on Micro Electro Mechanical Systems, MEMS 2012
Country/TerritoryFrance
CityParis
Period12.01.2912.02.2

Quacquarelli Symonds(QS) Subject Topics

  • Materials Science
  • Engineering - Mechanical
  • Engineering - Electrical & Electronic
  • Engineering - Petroleum
  • Physics & Astronomy

Fingerprint

Dive into the research topics of 'Robust silicon deep etching without thermal isolation in large mass and long spring structures'. Together they form a unique fingerprint.

Cite this