Bolivar, P. Haring and Brucherseifer, M. and Nagel, M. and Kurz, H. and Bosserhoff, Anja K. and Buettner, R. (2002) Label-free probing of genes by time-domain terahertz sensing. PHYSICS IN MEDICINE AND BIOLOGY, 47 (21). pp. 3815-3821. ISSN 0031-9155
Full text not available from this repository.Abstract
A label-free sensing approach for the label-free characterization of genetic material with terahertz (THz) electromagnetic waves is presented. Time-resolved THz analysis of polynucleotides demonstrates a strong dependence of the complex refractive index of DNA molecules in the THz frequency range on their hybridization state. By monitoring THz signals one can thus infer the binding state (hybridized or denatured) of oligo- and polynucleotides, enabling the label-free determination the genetic composition of unknown DNA sequences. A broadband experimental proof-of-principle in a free-space analytic configuration. as well as a higher-sensitivity approach using inteorated THz sensors reaching femtomol detection levels and demonstrating the capability to detect single-base mutations, are presented. The potential application for next generation high-throughput label-free genetic analytic systems is discussed.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | FLUORESCENT NUCLEOTIDES; DNA HYBRIDIZATION; SPECTROSCOPY; BIOSENSORS; SURFACE; DAMAGE; MODES; |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Pathologie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 26 Aug 2021 12:36 |
| Last Modified: | 26 Aug 2021 12:36 |
| URI: | https://pred.uni-regensburg.de/id/eprint/39677 |
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