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Sidewall Imaging of Microstructures with a Tilted Quartz Tuning Fork (QTF) Force Sensor

  • Danish Hussain
  • , Wen Yongbing
  • , Hui Xie*
  • *Corresponding author for this work
  • National University of Sciences and Technology Pakistan
  • Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Sidewall imaging of micro and nano structures is essential for critical dimensional metrology in the semiconductor industry. Atomic force microscope is an important sidewall imaging instrument due to its three dimensional imaging capability, high accuracy and ultra high resolution. We propose an AFM method for sidewall imaging of high step sidewalls. A tuning fork force sensor with a tungsten tip is tilted at a suitable angle (θ) to access the sidewall. Sidewalls of a micro electromechanical systems (MEME) structure fabricated by deep reactive ion etching (DIRE) process is scanned and sidewall roughness is measured.

Original languageEnglish
Title of host publicationMARSS 2018 - International Conference on Manipulation, Automation and Robotics at Small Scales
EditorsSergej Fatikow, Sinan Haliyo, Fumihito Arai, Albert Sill
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538648414
DOIs
StatePublished - 3 Oct 2018
Event3rd International Conference on Manipulation, Automation and Robotics at Small Scales, MARSS 2018 - Nagoya, Japan
Duration: 4 Jul 20188 Jul 2018

Publication series

NameMARSS 2018 - International Conference on Manipulation, Automation and Robotics at Small Scales

Conference

Conference3rd International Conference on Manipulation, Automation and Robotics at Small Scales, MARSS 2018
Country/TerritoryJapan
CityNagoya
Period4/07/188/07/18

Keywords

  • Atomic Force Microscopy (AFM)
  • Quartz tuning fork (QTF)
  • Sidewall imaging
  • Sidewall roughness

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