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Positioning and Immobilization of Individual Quantum Dots with Nanoscale Precision

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posted on 10.11.2010, 00:00 by Chad Ropp, Zachary Cummins, Roland Probst, Sijia Qin, John T. Fourkas, Benjamin Shapiro, Edo Waks
We demonstrate a technique for the precise immobilization of nanoscale objects at accurate positions on two-dimensional surfaces. We have developed a water-based photoresist that causes nanostructures such as colloidal quantum dots to segregate to a thin layer at surfaces. By combining this material with electroosmotic feedback control, we demonstrate the ability to position selected, individual quantum dots at specific locations and to immobilize them with 130 nm precision via localized UV exposure.

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