Fabrication of microbowtie structures for optical probing of nanoscale objects

A. A. Tseng, Rodolfo Diaz, C. D. Chen, C. S. Wu

Research output: Contribution to journalArticle

Abstract

A microbowtie array critical to a newly proposed optical probe is studied. The optical probe is used for high-speed detection of nanoscale objects. Based on the concept of Wave Interrogated Near Field Array (WINFA), an array of microbowtie structures acts as a detector in amplifying the incident light source to overcome the difficulties of the conventional optical probe that are limited by the diffraction limits of the optical light. In the present study, the micro bowties are fabricated by an electron beam lithography technique. The paper begins with an introduction of the probe concept and then the design considerations are given followed by the fabrication procedure and results. Two different substrates are considered to study the charge accumulation problem caused by an insulating substrate, required by the probe. Results indicate that the bowtie structure with an indium-tin-oxide coated glass substrate can minimize the charge accumulation problem, making it a suitable substrate for the bowtie structures considered. The paper concludes with recommendations for making even smaller nano-sized bowtie structures.

Original languageEnglish (US)
Pages (from-to)335-339
Number of pages5
JournalMicrosystem Technologies
Volume9
Issue number5
DOIs
StatePublished - May 1 2003

Fingerprint

Fabrication
fabrication
probes
Substrates
Electron beam lithography
Tin oxides
recommendations
indium oxides
Indium
tin oxides
Light sources
near fields
light sources
lithography
Diffraction
high speed
electron beams
Detectors
Glass
glass

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Hardware and Architecture
  • Electrical and Electronic Engineering

Cite this

Fabrication of microbowtie structures for optical probing of nanoscale objects. / Tseng, A. A.; Diaz, Rodolfo; Chen, C. D.; Wu, C. S.

In: Microsystem Technologies, Vol. 9, No. 5, 01.05.2003, p. 335-339.

Research output: Contribution to journalArticle

Tseng, A. A. ; Diaz, Rodolfo ; Chen, C. D. ; Wu, C. S. / Fabrication of microbowtie structures for optical probing of nanoscale objects. In: Microsystem Technologies. 2003 ; Vol. 9, No. 5. pp. 335-339.
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