Results 311 to 320 of about 2,208,157 (360)
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Electrochemical application of DNA biosensors
SPIE Proceedings, 2001Disposable electrochemical DNA-based biosensors are reviewed; they have been used for the determination of low- molecular weight compounds with affinity for nucleic acids and for the detection of hybridization reaction. The first application is related to the molecular interaction between surface-linked DNA and pollutants or drugs, in order to develop ...
Mascini M. +3 more
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Analytical Chemistry, 2007
We present a new type of DNA switch, based on the Holliday junction, that uses a combination of binding and conformational switching to enable specific label-free detection of DNA and RNA. We show that a single RNA oligonucleotide species can be detected in a complex mixture of extracted cellular RNA and demonstrate that by exploiting different aspects
Amy H, Buck +13 more
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We present a new type of DNA switch, based on the Holliday junction, that uses a combination of binding and conformational switching to enable specific label-free detection of DNA and RNA. We show that a single RNA oligonucleotide species can be detected in a complex mixture of extracted cellular RNA and demonstrate that by exploiting different aspects
Amy H, Buck +13 more
openaire +2 more sources
In Analysis, 2019
Surface enhanced Raman scattering (SERS) DNA biosensing is an ultrasensitive, selective, and rapid detection technique with the ability to produce molecule-specific distinct fingerprint spectra.
I. Khalil +6 more
semanticscholar +1 more source
Surface enhanced Raman scattering (SERS) DNA biosensing is an ultrasensitive, selective, and rapid detection technique with the ability to produce molecule-specific distinct fingerprint spectra.
I. Khalil +6 more
semanticscholar +1 more source
Integrated capillary fluorescence DNA biosensor
Biosensors and Bioelectronics, 2003Covalent attachment of dsDNA molecules inside a glass capillary without the need for hybridization is described. It is shown that the glass capillary has a surface density of 2.5 x 10(13) molecules/cm(2) with specific binding capacity of 62.5%. The resulting substrate was used to develop a biosensor for determining fluorescent organic analytes and ...
Marc A, Breimer +2 more
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Recent Advances on DNA Biosensors
International Journal of Environmental Analytical Chemistry, 2001Abstract DNA biosensors are realised immobilising a DNA structure on a suitable transducer to obtain selective information. In this paper we show how the determination of low-molecular weight compounds with affinity for DNA was measured by their effect on the oxidation signal of the guanine peak of calf thymus DNA immobilised on the electrode sensor ...
TOMBELLI, SARA +2 more
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Biosensors for DNA sequence detection
Current Opinion in Chemical Biology, 2002DNA biosensors are being developed as alternatives to conventional DNA microarrays. These devices couple signal transduction directly to sequence recognition. Some of the most sensitive and functional technologies use fibre optics or electrochemical sensors in combination with DNA hybridization.
Wenonah, Vercoutere, Mark, Akeson
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Black Phosphorus-Based Surface Plasmon Resonance Biosensor for DNA Hybridization
IEEE Transactions on Plasma ScienceIn this work, we proposed and performed the numerical analysis of novel surface plasmon resonance (SPR) biosensor architecture (Prism-BAK1/Ag/WS2/Ni/BP/SM) based on angular interrogation at a wavelength of 633 nm.
Rajeev Kumar +3 more
semanticscholar +1 more source
Electrochemical biosensors for DNA hybridization and DNA damage
Biosensors and Bioelectronics, 1998Recent trends in the development of DNA biosensors for nucleotide sequence-specific DNA hybridization and for the detection of the DNA damage are briefly reviewed. Changes in the redox signals of base residues in DNA immobilized at the surface of carbon or mercury electrodes can be used as a sign of the damage of DNA bases.
E, Palecek +3 more
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2009
Amplified detection of DNA is a central research topic in modern bioanalytical science. Electronic or optical transduction of DNA recognition events provides readout signals for DNA biosensors. Amplification of the DNA analysis is accomplished by the coupling of nucleic acid-functionalized enzymes or nucleic acid-functionalized nanoparticles (NP) as ...
Itamar Willner +3 more
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Amplified detection of DNA is a central research topic in modern bioanalytical science. Electronic or optical transduction of DNA recognition events provides readout signals for DNA biosensors. Amplification of the DNA analysis is accomplished by the coupling of nucleic acid-functionalized enzymes or nucleic acid-functionalized nanoparticles (NP) as ...
Itamar Willner +3 more
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DNA origami for biosensor applications
2021 Smart Systems Integration (SSI), 2021Novel biosensors are incorporating aspects of nanotechnologies, such as the use of functional nanoparticles, in order to increase performance. For the integration of leading edge sensor principles based on nanoparticles, often the precise arrangement of nanostructures is an essential technology.
Hann, Julia +8 more
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