120th General Meeting of the KCS

Type Oral Presentation
Area Oral Presentation of Young Analytical Chemists I
Room No. Room C311+C312
Time THU 09:36-:
Code ANAL1.O-11
Subject Defocused Dark-Field Orientation Imaging of Single Gold Microrods on Synthetic Membranes
Authors Junho Lee, JI WON HA*
Department of Chemistry, University of Ulsan, Korea
Abstract Plasmonic gold microrods (AuMRs) are promising optical probes because of direct observation of their in-plane orientations and motions under an optical microscope. However, our understanding on the optical properties of AuMRs is still very limited at the single particle level and their out-of-plane orientations cannot be resolved by eye with high accuracy. Herein, we present the scattering properties of 1 μm-long AuMRs under defocused DF microscopy. Characteristic defocused scattering patterns of single AuMRs allowed us to resolve both in-plane and out-of-plane angles of single AuMRs. We further demonstrate the feasibility of using the defocused orientation imaging technique to track rotational motions and out-of-plane angles of single AuMRs on synthetic membranes.
E-mail mastar92@naver.com