A5009197577- Biosensors and Analytical Detection
- Advanced biosensing and bioanalysis techniques
- Electrochemical sensors and biosensors
- Electrochemical Analysis and Applications
- Analytical Chemistry and Sensors
- Advanced Biosensing Techniques and Applications
- Advanced Chemical Sensor Technologies
- SARS-CoV-2 detection and testing
- Advanced Nanomaterials in Catalysis
- Molecular Sensors and Ion Detection
- Pharmacological Effects and Assays
- Listeria monocytogenes in Food Safety
- Analytical chemistry methods development
- Conducting polymers and applications
- Carbon and Quantum Dots Applications
- Salmonella and Campylobacter epidemiology
- Electrowetting and Microfluidic Technologies
- Analytical Chemistry and Chromatography
- Alzheimer's disease research and treatments
- Mosquito-borne diseases and control
- Bacterial Identification and Susceptibility Testing
- Medicinal Plants and Neuroprotection
- Antibiotics Pharmacokinetics and Efficacy
- Sulfur Compounds in Biology
- Epilepsy research and treatment
King Mongkut's University of Technology Thonburi
2012-2024
King Mongkut's University of Technology North Bangkok
2020
GTx (United States)
2019
Chulalongkorn University
2008-2010
Srinakharinwirot University
2010
Colorado State University
2009
Tsinghua University
2006
We report the first demonstration of electrochemical detection for paper-based microfluidic devices. Photolithography was used to make channels on filter paper, and screen-printing technology fabricate electrodes Screen-printed paper were characterized using cyclic voltammetry demonstrate basic performance system. The utility our devices then demonstrated with determination glucose, lactate, uric acid in biological samples oxidase enzyme (glucose oxidase, lactate uricase, respectively)...
Wax screen-printing as a low-cost, simple, and rapid method for fabricating paper-based microfluidic devices (µPADs) is reported here. Solid wax was rubbed through screen onto paper filters. The printed then melted into the to form hydrophobic barriers using only hot plate. We first studied relationship between width of barrier original design line. also optimized heating temperature time determined resolution structures fabricated this technique. minimum hydrophilic channel 650 1300 µm,...
The release of metals and metal-containing compounds into the environment is a growing concern in developed developing countries, as human exposure to associated with adverse health effects virtually every organ system. Unfortunately, quantifying expensive; analysis costs using certified laboratories typically exceed $100/sample, making routine toxic cost-prohibitive for applications such occupational or environmental protection. Here, we report on simple, inexpensive technology potential...
Paper-based analytical devices (PADs) represent a growing class of elegant, yet inexpensive chemical sensor technologies designed for point-of-use applications. Most PADs, however, still utilize some form instrumentation such as camera quantitative detection. We describe here simple technique to render PAD measurements more and straightforward using the distance colour development detection motif. The so-called distance-based enables chemistries that are portable less resource intensive...
A microfluidic paper-based analytical device (μPAD) for the separation of blood plasma from whole is described. The can separate and quantify proteins in a single step. μPAD was fabricated using wax dipping method, final composed membrane combined with patterned Whatman No.1 paper. Blood membranes, LF1, MF1, VF1 VF2 were tested on μPAD. LF1 found to be most suitable separations when fabricating by dipping. For separation, cells (both red white) trapped allowing pure flow detection zone...
A novel lab-on-paper device combining electrochemical and colorimetric detection for the rapid screening of Au(III) in presence a common interference, Fe(III), industrial waste solutions is presented here. With dilute aqua regia (0.1 M HCl + 0.05 HNO3) as supporting electrolyte, square wave voltammetry on paper provided well-defined reduction peak at ∼287 ± 12 mV vs Ag/AgCl. Under optimized working conditions, calibration curve showed good linearity concentration range 1−200 ppm with...
We report for the first time development of a distance-based paper sensor simple, inexpensive, instrument-free, and portable determination chloride ions.
Airborne particulate matter (PM) pollution significantly impacts human health, but the cellular mechanisms of PM-induced toxicity remain poorly understood. A leading hypothesis on effects inhaled PM involves generation oxidative stress. To investigate stress, analytical methods have been developed to study chemical oxidation dithiothreitol (DTT) in presence PM. Although DTT readily reacts with several forms reactive oxygen species, this molecule is not endogenously produced biological...
This article reports the first fluorescent distance-based paper device coupled with an evaporating preconcentration system for determining trace mercury ions (Hg2+) in water. The nitrogen-doped carbon dots (NCDs) were synthesized by a one-step microwave method using citric acid and ethylenediamine. fluorescence turn-off of NCDs presence Hg2+ was visualized common black light, distance quenched correlated to concentration. optimal conditions pH, NCD concentration, sample volume, reaction time...
This work introduces the procedure of using non-immunoassay distance-based paper analytical devices (dPADs) to accurately measure any traces cardiac troponin I (TnI) in whole blood samples without use external separation. enables a rapid clinical diagnosis and subsequent follow-up regard identifying acute myocardial infarction. These dPADs are designed constructed accommodate three parts: (1) separation zone that is immobilized with hemostatic agent, this no longer requires membrane for...