News: Research Highlight

The FRET signatures of noninteracting proteins in membranes

March 18, 2014

Förster resonance energy transfer (FRET) experiments are often used to study interactions between integral membrane proteins in cellular membranes. However, in addition to the FRET of sequence-specific interactions, these experiments invariably record a contribution due to proximity FRET, which occurs when a donor and an acceptor approach each other by chance within distances of ∼100 Å.

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toroidal structures

Toroidal structures from brush amphiphiles

December 5, 2013

The self-assembly of amphiphilic block copolymers has been widely studied as an approach for engineering nano-objects. A variety of different features, including spherical micelles, cylindrical or worm-like micelles, toroids, and vesicles result from the self assembly of linear amphiphilic block copolymers by manipulating the ratio of dissimilar blocks, solvent quality, and coronal interactions.

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Diverse organic field effect transistor sensor responses

September 26, 2013

Naphthalenetetracarboxylic diimide derivatives (octyl “8” NTCDI, dimethylaminopropyl “DMP” NTCDI), and copper phthalocyanine (CuPc) were used to form a diverse organic field-effect transistor (OFET) sensor array. CuPc and 8-NTCDI are p-channel and n-channel semiconductors respectively, showing expected and opposing responses to analytes. DMP-NTCDI, on the other hand, because of its ionizable side chain, shows response directions […]

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aluminas oxide picture

Ion dependence of gate dielectric behavior of alkali metal ion-incorporated aluminas in oxide field

September 3, 2013

High performance, large area solution-processible transistor circuits are key components in the application of printable, low-cost electronics, such as large area, inexpensive, low-voltage and transparent sensors.  Operating voltage and input power could be reduced by either increasing saturation field-effect mobility of semiconductors or the capacitance of gate dielectrics.

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