In Situ Identification of Nanoparticle Structural Information Using Optical Microscopy

Kayla S.B. Culver, Tingting Liu, Alexander J. Hryn, Ning Fang, Teri W Odom

Research output: Contribution to journalArticle

Abstract

Diffraction-limited optical microscopy lacks the resolution to directly characterize nanoscale features of single nanoparticles. This paper describes how structural features of gold nanostars can be identified using differential interference contrast (DIC) microscopy. First, we established structure-property relationships between categories of nanoparticle shapes and DIC optical images and then validated the correlation with electrodynamic simulations and electron microscopy. We found that DIC image patterns of single nanostars could be differentiated between 2D and 3D geometries. DIC images were also used to distinguish asymmetric and 4-fold symmetric structures and track nanoparticle orientation. Finally, we demonstrated how this wide-field optical technique can be used for in situ characterization of single nanoparticles rotating at a glass-water interface.

Original languageEnglish
Pages (from-to)2886-2892
Number of pages7
JournalJournal of Physical Chemistry Letters
Volume9
Issue number11
DOIs
Publication statusPublished - Jun 7 2018

Fingerprint

Optical microscopy
Nanoparticles
microscopy
interference
nanoparticles
image contrast
Electrodynamics
electrodynamics
Gold
Electron microscopy
electron microscopy
Microscopic examination
Diffraction
gold
Glass
Geometry
Water
glass
geometry
diffraction

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

In Situ Identification of Nanoparticle Structural Information Using Optical Microscopy. / Culver, Kayla S.B.; Liu, Tingting; Hryn, Alexander J.; Fang, Ning; Odom, Teri W.

In: Journal of Physical Chemistry Letters, Vol. 9, No. 11, 07.06.2018, p. 2886-2892.

Research output: Contribution to journalArticle

Culver, Kayla S.B. ; Liu, Tingting ; Hryn, Alexander J. ; Fang, Ning ; Odom, Teri W. / In Situ Identification of Nanoparticle Structural Information Using Optical Microscopy. In: Journal of Physical Chemistry Letters. 2018 ; Vol. 9, No. 11. pp. 2886-2892.
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