Phase-stepping interferometry of GaAs nanowires: Determining nano-wire radius

D. J. Little; R. L. Kuruwita; A. Joyce; Q. Gao; T. Burgess; C. Jagadish; D. M. Kane

doi:10.1063/1.4825153

Phase-stepping interferometry of GaAs nanowires: Determining nano-wire radius

D. J. Little^*
, R. L. Kuruwita
, A. Joyce
, Q. Gao
, T. Burgess
, C. Jagadish
, D. M. Kane

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Phase stepping interferometry is used to measure the size of near-cylindrical nanowires. Nanowires with nominal radii of 25 nm and 50 nm were used to test this by comparing specific measured optical phase profile values with theoretical values calculated using a wave-optic model of the Phase stepping interferometry (PSI) system. Agreement within 10% was found, which enabled nanowire radii to be predicted within 4% of the nominal value. This demonstration highlights the potential capability for phase stepping interferometry to characterize single nanoparticles of known geometry in the optical far-field.

Original language	English
Article number	161107
Journal	Applied Physics Letters
Volume	103
Issue number	16
DOIs	https://doi.org/10.1063/1.4825153
Publication status	Published - 14 Oct 2013

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abstract = "Phase stepping interferometry is used to measure the size of near-cylindrical nanowires. Nanowires with nominal radii of 25 nm and 50 nm were used to test this by comparing specific measured optical phase profile values with theoretical values calculated using a wave-optic model of the Phase stepping interferometry (PSI) system. Agreement within 10\% was found, which enabled nanowire radii to be predicted within 4\% of the nominal value. This demonstration highlights the potential capability for phase stepping interferometry to characterize single nanoparticles of known geometry in the optical far-field.",

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AU - Little, D. J.

AU - Kuruwita, R. L.

AU - Joyce, A.

AU - Gao, Q.

AU - Burgess, T.

AU - Jagadish, C.

AU - Kane, D. M.

PY - 2013/10/14

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AB - Phase stepping interferometry is used to measure the size of near-cylindrical nanowires. Nanowires with nominal radii of 25 nm and 50 nm were used to test this by comparing specific measured optical phase profile values with theoretical values calculated using a wave-optic model of the Phase stepping interferometry (PSI) system. Agreement within 10% was found, which enabled nanowire radii to be predicted within 4% of the nominal value. This demonstration highlights the potential capability for phase stepping interferometry to characterize single nanoparticles of known geometry in the optical far-field.

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Phase-stepping interferometry of GaAs nanowires: Determining nano-wire radius

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