biosensors – Page 3 – TechConnect Briefs

Biosensors Fabricated through Electrostatic Assembly of Enzymes/Polyelectrolyte Hybrid Layers on Carbon Nanotubes

Lin Y., Liu G., Wang J., Pacific Northwest National laboratory, US

Carbon nanotubes (CNTs) have emerged as a new class of nanomaterials that is receiving considerable interest because of their unique structure and mechanical and electronic properties. One promising application of CNTs involves their use in [...]

A Novel, Low Power Biosensor for Real Time Monitoring of Creatinine and Urea in Peritoneal Dialysis

Premanode B., Toumazou C., Institute of Biomedical Engineering, UK

Novel biosensors, based on immobilized creatininase, creatinase and urease are developed, using ISFETs with weak inversion at pH 6-8 and 37.0oC. The ISFETs with circuitry, demonstrate a linear relationship of urea and creatinine at the [...]

Biomedical Applications of Carbon Nanotubes and the related Cellular Toxicity

Bellucci S., Balasubramanian C., Bergamaschi A., Bottini M., Magrini A., Mustelin T., INFN-Laboratori Nazionali di Frascati, IT

Carbon nanotubes, a form of carbon that did not exist in our environment before being manufactured possess unique chemical, physical, optical, and magnetic properties, which make them suitable for many uses in industrial products and [...]

Nanopillar Arrays with Superior Mechanical Strength and Optimal Spacing for High Sensitivity Biosensors

Anandan V., Rao Y.L., Zhang G., University of Georgia, US

Recently, many types of vertically aligned slender nanostructures, such as nanotubes and nanorods have been fabricated for use in biosensors development because of their increased surface area. Lately, evidence has emerged to reveal that these [...]

A Novel Class of Sensors for System Integrative Concepts in Biotechnological Applications

Schober A., Kittler G., Kittler M., Buchheim C., Majdeddin A., Cimalla V., Fischer M., Yanev V., Himmerlich M., Krischok S., Schaefer J.A., Romanus H., Sändig T., Burgold J., Weise F., Wurmus H., Drüe K.H., Hintz M., Thust H., Gebinoga M., Kittler G., Kittler M., Spitznas A., Gottwald E., Weibezahn K-F., Wegener D., Schwienhorst A., Ambacher O., Technical University of Ilmenau, DE

The application of an system integrative approach based on hetereostructure sensors (group III nitrides) for the examination of differnt biological systems is shown and discussed.

Synthesis of new Metal Complex – Biomolecule Hybrids as Redox Sensors for Specific Nucleobases

Gasser G., Bond A.M., Graham B., Kosowski Z., Spiccia L., Monash University, AU

There are a number of redox-active supramolecular receptors described in the literature, but those containing ferrocene as a redox-active reporter group are the most frequently cited. It has been shown that modified ferrocenyl conjugates can [...]

Nano-Cantilevers for an Ultra-Sensitive Bio-Assay

Zheng J., Klein K., Pucha R., Sitaraman S.K., Sitaraman S.V., Merlin D., Rajalakshmi S., Sarma D.S.R., Gerwirtz A., Sitaraman S.K., Sitaraman S.V., Georgia Institute of Technology, US

Micro and Nano-scale cantilever arrays are being developed for an ultra sensitive bio-assay (Figure 1). The advantage of these cantilevers is that they eliminate the use of laser for deflection detection, which is impractical for [...]

Glucose Sensor Based On Enzyme Entrapment In Polyacrylamide Microgels

Lopez-Cabarcos E., Retama B.R., Mecerreyes D., Lopez-Ruiz B., Universidad Complutense, ES

Glucose oxidase (GOx), was encapsulated in polyacrylamide microgels with the aim to preserve the enzymatic activity and to fabricate a biosensor with these microgel particles (1-3). The biosensor presents great stability, but when it is [...]

Simulation Methodology for Dielectrophoresis in Microelectronic Lab-on-a-chip

Leonardi A., Medoro G., Manaresi N., Tartagni M., Guerrieri R., DEIS - University of Bologna, IT

Recent trends in lab-on-a-chip show a growing use of dielectrophoresis (DEP) to manipulate biological objects such as cells and organic molecules [1], [2], [3], [4]. Bringing the advances of microelectronic miniaturization into biological and clinical [...]

Simulation Methodology for Dielectrophoresis in Microelectronic Lab-on-a-chip

Leonardi A., Medoro G., Manaresi N., Tartagni M., Guerrieri R., DEIS - University of Bologna, IT

Recent trends in lab-on-a-chip show a growing use of dielectrophoresis (DEP) to manipulate biological objects such as cells and organic molecules [1], [2], [3], [4]. Bringing the advances of microelectronic miniaturization into biological and clinical [...]