Narrow Terahertz Attenuation Signatures in Bacillus thuringiensis

Document Type

Article

Publication Date

10-1-2014

Identifier/URL

40235031 (Pure); 23821459 (PubMed); 84908605896 (QABO)

Abstract

Terahertz absorption signatures from culture-cultivated Bacillus thuringiensis were measured with a THz photomixing spectrometer operating from 400 to 1200 GHz. We observe two distinct signatures centered at ∼955 and 1015 GHz, and attribute them to the optically coupled particle vibrational resonance (surface phonon-polariton) of Bacillus spores. This demonstrates the potential of the THz attenuation signatures as “fingerprints” for label-free biomolecular detection.

DOI

10.1002/jbio.201300042

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