A5047691556- Advanced biosensing and bioanalysis techniques
- Electrochemical Analysis and Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Plasmonic and Surface Plasmon Research
- Biosensors and Analytical Detection
- Electrochemical sensors and biosensors
- Microfluidic and Capillary Electrophoresis Applications
- Analytical Chemistry and Sensors
- Molecular Junctions and Nanostructures
- Innovative Microfluidic and Catalytic Techniques Innovation
- Copper-based nanomaterials and applications
- Conducting polymers and applications
- Nanofabrication and Lithography Techniques
- Nanopore and Nanochannel Transport Studies
- Graphene research and applications
- Advanced Cellulose Research Studies
- Quantum Dots Synthesis And Properties
- Electrowetting and Microfluidic Technologies
- Fuel Cells and Related Materials
- Advanced Nanomaterials in Catalysis
- Gas Sensing Nanomaterials and Sensors
- SARS-CoV-2 detection and testing
- Chalcogenide Semiconductor Thin Films
- Bacterial biofilms and quorum sensing
- Nanocomposite Films for Food Packaging
International Iberian Nanotechnology Laboratory
2019-2024
Queen's University Belfast
2022-2024
National Research and Innovation Agency
2022
Indonesian Institute of Sciences
2018-2021
Chang Gung University
2014-2020
Bandung Institute of Technology
2019
Asia University
2017
Liquid-gated Graphene Field-Effect Transistors (GFET) are ultrasensitive bio-detection platforms carrying out the graphene’s exceptional intrinsic functionalities. Buffer and dilution factor prevalent strategies towards optimum performance of GFETs. However, beyond Debye length (λD), role graphene-electrolytes’ ionic species interactions on DNA behavior at nanoscale interface is complicated. We studied characteristics GFETs under different strength, pH, electrolyte type, e.g., phosphate...
Biosensors based on graphene field-effect transistors have become a promising tool for detecting broad range of analytes. However, their performance is substantially affected by the functionalization protocol. In this work, we use controlled in-vacuum physical method covalent to construct ultrasensitive aptamer-based biosensors (aptasensors) able detect hepatitis C virus core protein. These devices are highly specific and robust, achieving attomolar detection viral protein in human blood...
The Tesla valve (TV), a valvular conduit invented by Nicola over century ago, has recently acquired significant attention and application in various fields because of the growing interest microfluidics nanofluidics. unique architecture TV characterized an asymmetrical design arc-shaped channel long been intriguing yet underrated for building passive component microfluidic system. While previously regarded as technology without use, structures have implemented thermal manipulation fluidics,...
Abstract The impact of different gold nanoparticle (GNP) structures on plasmonic enhancement for DNA detection is investigated a few-layer graphene (FLG) surface plasmon resonance (SPR) sensor. Two distinct nano-urchins (GNu) and nanorods (GNr) were used to bind the uniquely designed single-stranded probe (ssDNA) Mycobacterium tuberculosis complex DNA. two types GNP-ssDNA mixture adsorbed onto FLG-coated SPR sensor through π - stacking force between ssDNA layer. In presence complementary...
Zinc oxide nanograss (ZnONG) decorated with gold (Au) nanospeckles is demonstrated as a sensing platform for bacterial DNA hybridization in this study. Thermal evaporation of 5 nm Au on hydrothermally synthesized ZnONG generates highly dense speckles, which contributes to an approximately two-fold enhancement the effective surface area and diffusion coefficient cyclic voltammetry (CV) measurement compared non-speckled nanograss. Selective capture molecular probes from our predesigned...
Unique structures of a gold island over nanospheres (AuIoN) featuring three-dimensional (3D) nanostructure on highly ordered two-dimensional (2D) array nanospherical particles with different adhesion layers were fabricated as surface-enhanced Raman scattering (SERS) substrates. Ultra-thin Au was thermally evaporated onto PS while aluminum oxide (Al2O3) applied an layer. The outcomes demonstrate that the higher metallic particle density and surface roughness supplied by Al2O3 provided larger...
In this present work, a plasmonic sensor is developed through an extremely cheap cellulose-based source, widely known as food product, nata de coco (NDC). Capturing its interesting features, such innate surface roughness from naturally grown cellulose during fermentation period, the engineering and modulation of NDC fibril size properties were attempted high-pressure homogenization (HPH) treatment to obtain highly dense nanofibrils. After transformation into thin, paper-sheet form casting...
This paper reports the development of Alzheimer’s disease (AD) sensor through early detection amyloid-beta (Aβ) (1–42) using simple nanorestructuring Au sheet plate by oxidation-reduction cycle (ORC) via electrochemical system. The topology substrates was enhanced roughening and grains grown a ORC technique in aqueous solutions containing 0.1 mol/L KCl electrolytes. roughened substrate then functionalized with highly specific antibody β-amyloid Aβ (1–28) HS-PEG-NHS modification, which...
We demonstrated potential features of gold nanoparticle bipyramid (AuNB) for an electrochemical biosensor. The facile synthesis method and controllable shape size the AuNB are achieved through optimization cetyltrimethylammonium chloride (CTAC) surfactant over citric acid (CA) ratio determining control typically spherical Au seed its transition into a penta-twinned crystal structure. observe that optimized CTAC CA facilitates flocculation in which seeds with as tiny ∼14.8 nm could be...
In this study, we reported the construction of Gold Nanospike (AuNS) structures on surface screen-printed carbon electrode (SPCE) used for non-enzymatic electrochemical detection. This modification was prepared with a one-step electrodeposition method by controlling parameters, such as applied potential and deposition time, via Constant Potential Amperometry (CPA). Those parameters precursor solution concentration were varied to investigate optimum configuration. The results confirmed that...
Identifying grape varieties in wine, related products, and raw materials is of great interest for enology to ensure its authenticity. However, these matrices' complexity low DNA content make this analysis particularly challenging. Integrating with 2D materials, such as graphene, offers an advantageous pathway toward ultrasensitive detection. Here, we show that monolayer graphene provides optimal test bed nucleic acid detection single-base resolution. Graphene's ultrathinness creates a large...
In this work, a novel method combining fabrication of nonlithographic Au-film over nanosphere (AuFON) with gradual rapid thermal annealing (RTA) treatment was developed to produce high performance surface-enhanced Raman scattering (SERS) substrate. The highly uniform and periodic AuFON achieved by the downscaling processs in modified lithography technique using 100-nm polystyrene (PS) nanospheres, which target significant SERS enhancement factor (EFSERS) due effectively generated "hotspots."...
The nanopattern of highly ordered and uniform Au nanoporous membranes with different sizes thicknesses the downscaling approach through combination colloidal based nanosphere lithography (NSL) thermal evaporation was proposed to fabricate an extending-gate field effect transistor (EGFET) membrane. fabrication involved use PS nanospheres templates 500 nm 100 in diameters various thickness 10, 25 40 nm. Carried out detection Staphylococcus aureus 16S rRNA hybridization test analytical range...
Abstract In this study, we demonstrate a facile, durable and inexpensive technique of producing silver nanoparticles-decorated multi-walled carbon nanotubes (MWCNT/AgNP) on the easy-to-use screen-printed electrodes (SPCE) for non-enzymatic detection uric acid (UA) in an electrochemical sensor. The developed sensors show great durability three months storage, high specificity performance preclinical study using spiked UA synthetic urine sample. A simple route hybrid nanocomposite was proposed...
A simple, facile and cost-effective nanostructuring technique is proposed to construct a photoelectrochemical (PEC) sensor via the solution-based hydrothermal growth of TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> nanobrush (TiO NB). It demonstrated that control seed solution ratio, process temperature duration significantly contributed final morphological characteristics rutile NB, as confirmed by X-ray diffraction (XRD)...
The caterpillar medicinal mushroom Cordyceps militaris contains many bioactive components, such as adenosine, cordycepin, and polysaccharides. In this study, C. was exposed to 0, 3, 6, or 9 pulses of light irradiation estimate changes in vitamin D2, compounds, nonvolatile taste antioxidant properties. addition, we compared the components properties mycelia solid waste medium that had been treated with pulsed (PL) irradiation. Overall, PL increased D2 content total amino acid levels 9-48%; 0...
The nanostructuring of a sensing membrane is performed through colloidal nanosphere lithography (NSL) techniques with tiny polystyrene nanobead template 100 nm in size. solvent ratio adjustment has been proven to be effective assisting the monolayer deposition small templating particles minimal defects. Two distinct structures, namely, billowy gold nanostructure (BGN) where left unetched and nanoframe array (GNA) regular ring-like structure after removal, are used for extended-gate...
We present a low-cost and simple method to fabricate novel lock-and-key mixer microfluidics using an economic stereolithography (SLA) three-dimensional (3D) printer, which costs less than USD 400 for the investment. The proposed study is promising high throughput fabrication module, typically limited by conventional fabrications, such as photolithography polymer-casting methods. demonstrate modular connector its chamber modules with optimized parameters, exposure condition printing...