Nanometer positioning of single quantum dots by flow control

Author

Ropp, Chad ; Probst, Roland ; Cummins, Zachary ; Kumar, Rakesh ; Raghavan, Srinivasa R. ; Waks, Edo ; Shapiro, Benjamin

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Maryland, College Park, MD, USA

fYear

2010

fDate

12-15 Oct. 2010

Firstpage

52

Lastpage

56

Abstract

We present a method to individually position single QDs with nanometer precision by electroosmotic flow control (EOFC). Using EOFC, we demonstrate the ability to individually select a QD from anywhere within a 100 μm control area inside a microfluidic chamber and place it at a desired position to with a 52 nm precision. The single photon emission of EOFC manipulated QDs is verified by photon anti-bunching. These results demonstrate, for the first time, the ability to position single QDs to nanometer position accuracy in a microflu-idic environment. Such capability opens up the possibility for controllable placement of QDs in nanophotonic structures for the development of complex quantum devices, as well as in situ study of QDs for biological and sensing applications.

Keywords

electrophoresis; flow control; microchannel flow; nanophotonics; nanopositioning; osmosis; photoluminescence; semiconductor quantum dots; electroosmotic flow control; microfluidic chamber; nanometer positioning; nanophotonic structures; photon anti-bunching; single photon emission; single quantum dots; Accuracy; Cameras; Charge carrier processes; Nanobioscience; Nanoscale devices; Photonics; Quantum dots;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology Materials and Devices Conference (NMDC), 2010 IEEE

Conference_Location

Monterey, CA

Print_ISBN

978-1-4244-8896-4

Type

conf

DOI

10.1109/NMDC.2010.5652515

Filename

5652515