A5056811527- Electrochemical sensors and biosensors
- Biosensors and Analytical Detection
- Advanced biosensing and bioanalysis techniques
- Electrochemical Analysis and Applications
- Analytical Chemistry and Sensors
- Advanced Biosensing Techniques and Applications
- Advanced Chemical Sensor Technologies
- SARS-CoV-2 detection and testing
- Conducting polymers and applications
- Analytical chemistry methods development
- Molecular Sensors and Ion Detection
- Microfluidic and Capillary Electrophoresis Applications
- Molecular Junctions and Nanostructures
- Pharmacological Effects and Assays
- Advanced Sensor and Energy Harvesting Materials
- Dye analysis and toxicity
- Antibiotics Pharmacokinetics and Efficacy
- Innovative Microfluidic and Catalytic Techniques Innovation
- Biochemical Analysis and Sensing Techniques
- Electrocatalysts for Energy Conversion
- Analytical Methods in Pharmaceuticals
- Pesticide Residue Analysis and Safety
- Electrowetting and Microfluidic Technologies
- Gas Sensing Nanomaterials and Sensors
- Cannabis and Cannabinoid Research
Chulalongkorn University
2016-2025
Petromat
2014-2024
Bangkok University
2016-2021
Optica
2020
National Nanotechnology Center
2016
Colorado State University
2009-2015
Srinakharinwirot University
2010
Kanagawa Academy of Science and Technology
2008
University of Indonesia
2008
Keio University
2008
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...
The development of simple fluorescent and colorimetric assays that enable point-of-care DNA RNA detection has been a topic significant research because the utility such in resource limited settings. most common motifs utilize hybridization to complementary strand coupled with sensitive reporter molecule. Here, paper-based assay for based on pyrrolidinyl peptide nucleic acid (acpcPNA)-induced nanoparticle aggregation is reported as an alternative traditional approaches. PNA probes are...
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...
To the best of our knowledge, this is first report on paper-based devices for automating sequential multistep procedures a sandwich-type enzyme-linked immunosorbent assay (ELISA) that require only single-step application sample solution. The device was based piece nitrocellulose (NC) membrane with specially designed channels, where all reagents are applied at different locations in order to control fluid travel detection region. inkjet printing method, simple and low-cost process, used...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInteractions between organized, surface-confined monolayers and vapor-phase probe molecules. 7. Comparison of self-assembling n-alkanethiol deposited on gold from liquid vapor phasesOrawon Chailapakul, Li Sun, Chuanjing Xu, Richard M. CrooksCite this: J. Am. Chem. Soc. 1993, 115, 26, 12459–12467Publication Date (Print):December 1, 1993Publication History Published online1 May 2002Published inissue 1 December...