Showing papers in "Biosensors and Bioelectronics in 2011"

TL;DR: This review discusses the application of graphene for the detection of glucose, Cyt-c, NADH, Hb, cholesterol, AA, UA, DA, and H(2)O(2).

TL;DR: This review article concentrates on the summarization of the recent progress in the fabrication and application of microbial biosensors based on amperometry, potentiometry, conductometry, voltammetry, microbial fuel cell, fluorescence, bioluminescence, and colorimetry.

TL;DR: In this paper, a graphene/Pt-modified glassy carbon (GC) electrode was created to simultaneously characterize ascorbic acid (AA), dopamine (DA), and uric acid(UA) levels via cyclic voltammetry (CV) and differential pulse voltammetric (DPV).

TL;DR: Efforts have been made to discuss and explore various characteristics of PANI responsible for direct electron transfer leading towards fabrication of mediator-less biosensors.

TL;DR: The design, construction, and testing of a contact lens with an integrated amperometric glucose sensor is reported, proposing the possibility of in situ human health monitoring simply by wearing a contact eye, with good linearity for the typical range of glucose concentrations in the tear film.

TL;DR: This paper focuses onCP-based sensor elements and the state-of-art of CP-based sensing devices that have potential applications as tools in clinical diagnosis and surgical interventions and some of the key issues related to CPs are highlighted.

TL;DR: Nano nickel oxide (NiO) modified non-enzymatic glucose sensors with enhanced sensitivity with excellent electrocatalytical activity and assay performance are investigated and can be used for the assay of glucose in real sample.

TL;DR: This review provides an in-depth overview of state-of-the-art dielectrophoretic platforms integrated into microfluidics aimed towards different biomedical applications and suggests the future trends and potential applications of DEP systems in single cell analysis, stem cell research, establishing novel devices, and realising fully DEP-activated lab-on-a-chip systems.

TL;DR: The principles of operation of electrochemical biosensors based on CILEs and IL/composite-modified macrodisk electrodes are discussed and emphasis is given to direct electron-transfer reaction and electrocatalysis of hemeproteins and enzyme-modified composite electrodes.

TL;DR: An aptasensor for Ochratoxin A (OTA) using unmodified gold nanoparticles (AuNPs) indicator based on the conformation change of OTA's aptamer in phosphate buffered saline containing Mg(2+) and OTA, and the phenomenon of salt-induced AuNPs aggregation.

TL;DR: It is demonstrated that bovine serum albumin (BSA) stabilized Au clusters exhibited highly intrinsic peroxidase-like activity and a sensitive and selective method forxanthine detection was developed using xanthine oxidase (XOD) and the as-prepared BSA-Au clusters.

TL;DR: There is an urgent need for the development of rapid, competent, and reliable methods for direct detection and identification of foodborne brown pathogens, and foreseeable future trends in biosensor research activities are presented.

TL;DR: The P-AuNPs displayed the most obvious response to mercury ions in water in contrast to lead and copper ions, and the real water sample analysis verified the conclusion.

TL;DR: This review emphasizes the new developments in the field of SPR-related instrumentation including optical platforms, chips design, nanoscale approach and new materials.

TL;DR: Findings show that AC is a cost-effective material for oxygen reduction that can still produce ~750 mW/m(2) after 1 year, and suggest that the degradation in cathode performance was due to clogging of the AC micropores.

TL;DR: The experiment results showed that the sensor exhibits good reproducibility and long-term stability, as well as high selectivity with no interference from other potential competing species.

TL;DR: In this work, biomolecule-stabilized Au nanoclusters were demonstrated as a novel fluorescence probe for sensitive and selective detection of glucose and found to be quenched effectively by the enzymatically generated hydrogen peroxide.

TL;DR: An electrochemical sensor for highly sensitive and selective detection of DA was successfully constructed as demonstration based on the synthesized GSCR-MIPs nanocomposites and revealed a lower limit of detection and wider linear response compared to some previously reported DA electrochemical MIPs sensors.

TL;DR: The current scientific and engineering challenges involved in developing practical bio-fuel cell systems are described, with particular emphasis on a fundamental understanding of the reaction environment, the performance and stability requirements, modularity and scalability.

TL;DR: This study fabricated a glucose biosensor by immobilizing glucose oxidase into AgNP/F-SiO(2)/GO nanocomposite-modified glassy carbon electrode (GCE) for glucose detection and demonstrates that the resultant glucose bios sensor can be used for the glucose detection in human blood serum.

TL;DR: These microfluidic immunosensors employing nanostructured surfaces and off-line analyte capture with heavily labeled paramagnetic particles hold great promise for accurate, sensitive multiplexed detection of diagnostic cancer biomarkers.

TL;DR: A simple method to detect fungi toxin (ochratoxin A) produced by Aspergillus Ochraceus and Penicillium verrucosumm is developed, utilizing graphene oxide as quencher which can quench the fluorescence of FAM attached to toxin-specific aptamer.

TL;DR: The ssDNA-GO architecture probe has been successfully applied in the multiplex detection of sequence-specific DNA, thrombin, Ag(+), Hg(2+) and cysteine, and the limit of detection was 1 nM.

TL;DR: This work provides a useful avenue for implementing ER-GNO as a new generation of electrochemical transducer in disposable electrode, which could expand the scope of graphene constructed electrochemical biosensing devices and hold great promise for routine sensing applications.

TL;DR: The fabrication and testing of a multiplex immuno-disc sensor for the specific detection of Pseudomonas aeruginosa and Staphylococcus aureus is described and a compact portable device which converts the color intensity of the gold nanoparticles that accumulate at the test region into a quantitative voltage reading proportional to the bacterial concentration in the sample is described.

TL;DR: The detection of dissolved avidin concentrations as low as 15 nM or 1 μg/ml is demonstrated using functionalized slotted photonic crystal cavities with integrated microfluidics with high sensitivity over an extremely small area.

TL;DR: G-CdS nanocomposite not only can be used for immobilizing GOD, but also can be extended to other enzymes and bioactive molecules, thus providing a promising platform for the development of biosensors.

TL;DR: ERGO-AuPdNPs nanocomposite showed excellent biocompatibility, enhanced electron transfer kinetics and large electroactive surface area, and were highly sensitive and stable towards oxygen reduction, making them highly suitable for oxidase-based biosensing.

TL;DR: The robust selectivities, sensitivities, and stabilities determined experimentally indicated the great potential of NiNPs/SMWNTs nanohybrids for construction of a variety of electrochemical sensors.

TL;DR: Results indicated that PdNPs/CS-GR nanocomposites held great potential for construction of a variety of electrochemical biosensors.