r_sensor

Game-Changing Hepatitis B Virus Electrochemical Sensor Developed from Laser-Induced Graphene

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 Dr. Pumidech Puthongkham’s research group has been pioneered the application of Laser-Induced Graphene (LIG) in electrochemical biosensors in our department! We’ve just unveiled a high-performance immunosensor for Hepatitis B surface antigen (HBsAg) detection. Why it’s a Breakthrough:  Ultra-Sensitive & Fast: Functionalizing more carboxyl group on LIG electrode enhanced HBV antibody immobilization, yielding an incredibly low …

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Polarity and Viscosity-Sensitive Fluorescent Probe for Lipid Droplet Imaging

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This study presents a new fluorescent compound that responds sensitively to environmental polarity and viscosity. The compound is biocompatible, shows low toxicity, and selectively binds to lipid droplets in living cells, enabling precise monitoring of intracellular changes. These results highlight its potential as a powerful tool for exploring biological processes and microenvironmental properties.  Read More …

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Smart 3D-Printed Hydrogel Sensor: Detecting Pesticides & Water pH with Cellulose Innovation

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The escalating environmental and public health threats posed by pesticide-contaminated water sources and underutilized cellulose-rich waste demand urgent sustainable solutions. This study presents an eco-friendly multiplex colorimetric sensing platform that concurrently addresses these dual challenges by repurposing recycled cellulose derived from recycled office paper. The system integrates a 3D-printed cassette with a semi-interpenetrating polymer network …

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Innovative and Affordable Arsenic Testing Using Silver Nanoprisms

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Arsenic contamination in water is a serious environmental issue. To address this, researchers from the Environmental Analysis Research Unit (EARU) have developed a simple and highly sensitive color-based method to detect arsenic (As(III)) in water. This innovative approach uses silver nanoprisms coated with citrate, which visibly change color from blue to yellow when arsenic is …

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Hydrogel for preserving activity of enzyme for electrochemical biosensor

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Contemporary medical diagnosis relies on sensors, particularly enzyme-based electrochemical biosensors, to detect disease markers due to their high specificity and sensitivity. However, enzymes as biomolecules denature over time, causing the sensor being less reliable. This research aims to develop hydrogels capable of decreasing the rate of enzyme denaturation in order to extend a lifetime of …

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Non-invasive fingertip sweat biosensor for early kidney disease biomarker screening

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Accurate, non-invasive monitoring of creatinine is essential for assessing kidney function, with elevated levels indicative of chronic kidney disease (CKD). Sweat creatinine serves as a promising biomarker for kidney health. Similarly, sweat glucose monitoring is critical for detecting metabolic imbalances, particularly in diabetic kidney disease (DKD). Simultaneous detection of these biomarkers is vital for early …

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Colorimetric detection of arsenic(III) using iron(III) assisted tartrate stabilized gold nanoparticles

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Arsenic in water is a serious environmental concern because it is highly toxic. To help detect this dangerous substance, a new and easy-to-use method has been developed under the Environmental Analysis Research Unit (EARU) for the colorimetric detection of arsenite (As(III)) in water using ferric ion (Fe(III))- assisted tartrate-stabilized gold nanoparticles. When arsenic is in …

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Size-Dependent Electrochemistry of Laser-Induced Graphene Electrodes

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Graphene is a popular and interested nanomaterial in terms of electrical properties, so it has been applied to fabricate electrodes for modern electronic devices and sensors. In this work, Dr. Pumidech Puthongkham and Dr. Supacha Wirojsaengthong’s group explored the properties of laser-induced graphene electrode, an emerging electrode in the present decade for using in electrochemical …

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Hydrogel from Nata de coco for biomarker detection

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Bacterial cellulose (BC) or well-known as Nata de coco is a natural material with many beneficial physical properties such as biocompatibility, hydrophilicity and high porosity. Herein this research, composite hydrogels have been developed by incorporating carboxymethyl cellulose (CMC) into BC to improve re-swelling property after drying. Gold nanoparticles (AuNPs) were embedded within the BC/CMC composite …

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