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CPIMA Highlights [more highlights]

Patterning Organic Semiconductor Single Crystal Field-Effect Transistors

Single-crystal organic field-effect transistors (OFETs) are ideal device structures for studying fundamental science associated with charge transport in organic materials and have demonstrated outstanding electrical characteristics. However, it remains a technical challenge to integrate single-crystal devices into practical electronic applications. A key difficulty is that organic single-crystal devices are usually fabricated one device at a time through manual selection and placing individual crystals. To overcome this difficulty, Bao et al. successfully developed two high-throughput approaches to pattern organic single crystal arrays.

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Flow-Enhanced Single Molecule DNA Hybridization Studies

Objective: To develop novel microfluidic flow cells that allow trapping of single DNA molecules and studies of the binding of sequence-specific probes to the trapped DNA. Fig. 2
Approach: Two different devices have been designed and fabricated: a cross-slot that uses flow focusing to direct probes to the trapped DNA and a microfluidic "four roll mill" that allows the flow type to be varied from extension to shear to rotation near the trapped DNA (fig. 2).

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