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Rice nanophotonics experts create powerful molecular sensor
Date:7/15/2014

ay sound small, but the gap in most competing devices is on the order of 1 nanometer," Zhang said. "Our design is much more robust because even the smallest defect in a one-nanometer device can have significant effects. Moreover, the larger gap also results in a larger target area, the area where measurements take place. The target area in our device is hundreds of times larger than the target area in a one-nanometer device, and we can measure molecules anywhere in that target area, not just in the exact center."

Halas, the Stanley C. Moore Professor in Electrical and Computer Engineering and a professor of biomedical engineering, chemistry, physics and astronomy at Rice, said the potential applications for SECARS include chemical and biological sensing as well as metamaterials research. She said scientific labs are likely be the first beneficiaries of the technology.

"Amplification is important for sensing small molecules because the smaller the molecule, the weaker the optical signature," Halas said. "This amplification method is the most powerful yet demonstrated, and it could prove useful in experiments where existing techniques can't provide reliable data."


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Contact: David Ruth
david@rice.edu
713-348-6327
Rice University
Source:Eurekalert

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