期刊
ACS PHOTONICS
卷 6, 期 6, 页码 1485-1492出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.9b00137
关键词
chirality; chiral sensing; surface plasmon resonance; optical rotation; circular dichroism; thin films
类别
资金
- European Commission [FETOPEN-737071]
Chiral sensitive techniques have been used to probe the fundamental symmetries of the universe, study biomolecular structures, and even develop safe drugs. As chiral signals are inherently weak and often suppressed by large backgrounds, different techniques have been proposed to overcome the limitations of traditionally used chiral polarimetry. Here, we propose an angle-resolved chiral surface plasmon resonance (CHISPR) scheme that can detect the absolute chirality (handedness and magnitude) of a chiral sample and is sensitive to both the real and the imaginary part of a chiral sample's refractive index. We present analytical results and numerical simulations of CHISPR measurements, predicting signals at visible wavelengths. Moreover, we present a theoretical analysis that clarifies how our far-field measurements elucidate the underlying physics. This CHISPR protocol does not require elaborate fabrication and has the advantage of being directly implementable on existing surface plasmon resonance instrumentation.
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