期刊
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
卷 362, 期 1815, 页码 323-333出版社
ROYAL SOC
DOI: 10.1098/rsta.2003.1318
关键词
biomolecular sensing; DNA; polynucleotides; THz biochips
THz-wave-based approaches for the label-free characterization of genetic material are described. Time-resolved THz spectroscopic analysis of genetic sequences (polynucleotides) demonstrate a distinct complex refractive index in the THz frequency range as a function of the binding state of the analysed DNA sequences. By monitoring THz signals, one can thus infer the binding state of oligo- and polynucleotides, enabling the label-free determination of the genetic composition of target polynucleotides by sensing their binding to known probe molecules. Here we review integrated THz sensing array developments exhibiting high sensitivity and single-base mutation detection capabilities. Recent achievements using functionalized biosensing arrays of high-Q resonators are illustrated.
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