Optimization and comparison of photonic crystal resonators for silicon microcantilever sensors

Trong Thi Mai, Fu Li Hsiao, Chengkuo Lee, Wenfeng Xiang, Chii Chang Chen, W. K. Choi

Research output: Contribution to journalArticle

68 Citations (Scopus)

Abstract

Microcantilever sensors have been known as a fundamental design used in force sensors, strain sensors and biochemical sensors. The fast-growing applications in nanoelectromechanical systems (NEMS) lead to strong demands in new sensing mechanism in order to downsize the sensing elements to nanometer scale. Photonic crystal (PC) based resonators have been investigated as promising solutions because the bandgap structure and resonator characteristics are extremely sensitive to the deformation and position shift of holes in PC resonators. In addition to the well-known nano-cavity resonator (NCR), we proposed hexagonal nano-ring resonators (NRR) of two different layout configurations. When a microcantilever under different force loads, both of the resonant wavelength and the resonant wavelength shift can be measured as a linear function of force load. The linear relationship between wavelength shifts and strain is observed as well. The minimum detectable force and detectable strain for NRR configuration 1 is derived as small as 0.0757 μN and 0.0023%. The outstanding sensing capability renders PC resonators as a promising nanomechanical sensing element to be integrated in various transducers for NEMS applications.

Original languageEnglish
Pages (from-to)16-25
Number of pages10
JournalSensors and Actuators, A: Physical
Volume165
Issue number1
DOIs
Publication statusPublished - 2011 Jan 1

Fingerprint

Crystal resonators
Silicon sensors
Photonic crystals
Resonators
resonators
photonics
NEMS
optimization
sensors
Sensors
silicon
Wavelength
crystals
Cavity resonators
shift
wavelengths
Transducers
Loads (forces)
Energy gap
rings

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering

Cite this

Mai, Trong Thi ; Hsiao, Fu Li ; Lee, Chengkuo ; Xiang, Wenfeng ; Chen, Chii Chang ; Choi, W. K. / Optimization and comparison of photonic crystal resonators for silicon microcantilever sensors. In: Sensors and Actuators, A: Physical. 2011 ; Vol. 165, No. 1. pp. 16-25.
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Optimization and comparison of photonic crystal resonators for silicon microcantilever sensors. / Mai, Trong Thi; Hsiao, Fu Li; Lee, Chengkuo; Xiang, Wenfeng; Chen, Chii Chang; Choi, W. K.

In: Sensors and Actuators, A: Physical, Vol. 165, No. 1, 01.01.2011, p. 16-25.

Research output: Contribution to journalArticle

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