- Photonic Crystals and Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Surface Modification and Superhydrophobicity
- Optical Coatings and Gratings
- Nanomaterials and Printing Technologies
- TiO2 Photocatalysis and Solar Cells
- Solar Thermal and Photovoltaic Systems
- Solar-Powered Water Purification Methods
- Plasmonic and Surface Plasmon Research
- Pickering emulsions and particle stabilization
- Thermal Radiation and Cooling Technologies
- solar cell performance optimization
- Advanced Sensor and Energy Harvesting Materials
- Tribology and Lubrication Engineering
- Photovoltaic System Optimization Techniques
- Nanomaterials for catalytic reactions
- Nanoparticles: synthesis and applications
- Organic Electronics and Photovoltaics
- Icing and De-icing Technologies
- Liquid Crystal Research Advancements
- Conducting polymers and applications
- Advanced Photocatalysis Techniques
- Tactile and Sensory Interactions
- Laser-Ablation Synthesis of Nanoparticles
- Aerogels and thermal insulation
National Nanotechnology Center
2017-2024
National Science and Technology Development Agency
2017-2024
Mahidol University
2017
Lehigh University
2013-2015
Bethlehem Area School District
2015
Chulalongkorn University
2009
We demonstrate a purely mechanical technique for enhancing evaporation-driven convective deposition of particle monolayers from suspension. Lateral vibration in the direction results monolayer at faster speeds, over wider range withdraw rates, and with higher order versus traditional deposition. These enhancements phenomena are result variation thin film, where capillary interactions self-assembly by dynamically changing air-liquid interface. This enhancement fabricating ordered films may...
Superhydrophobic surfaces have proven effective in mitigating ice formation on substrates. This study aimed to experimentally investigate the effects of surface structure selected metal substrates anti-icing performance. were fabricated aluminum, copper, stainless steel, and titanium using a spray coating technique with superhydrophobic tridecafluorooctyl triethoxy silane (FAS)-functionalized colloidal silica nanoparticles. The wettability, morphology, chemical analysis coated reported....
Ice accumulation on brass surfaces can lead to heat transfer inefficiency, equipment degradation, and potential accidents. To address this issue, superhydrophobic surface technology is utilized. This work aims develop nanostructured using the combination of nanolaser ablation deposition silica nanoparticles achieve anti-icing property. Four distinct types namely, bare (BS), lasered (LS), coated (CS), coated-lasered (CLS) were prepared. The performances fabricated samples including effects...
This research concerns the development of Surlyn film reinforced with micro-/nanofibrillated celluloses (MFC) for use as an encapsulant in organic photovoltaic (OPV) cells. The aim this work was to investigate effects fibre types and mixing methods on structure–properties composite films. Three cellulose micro/nanofibrils were prepared: as-received MFC, dispersed MFC esterified MFC. fibres mixed via extrusion process, using two different methods. It found that extent disintegration tensile...
Particle-particle and particle-substrate interactions play a crucial role in capillary driven convective self-assembly for continuous deposition of particles. This systematic study demonstrates the nontrivial effects varying surface charge ionic strength monosized silica microspheres water on quality deposited monolayer. Increase particle results broader range parameters that result monolayer which can be explained considering electrostatic repulsion solution. Resulting changes coating...
The realization of structural diversity in colloidal crystals obtained by self-assembly techniques remains constrained thermodynamic considerations and current limits on our ability to alter structure over large scales using imposed fields confinement. In this work, a convective-based procedure fabricate multi-layer crystal films with extensive square-like symmetry is enabled periodic substrate motion during the continuous assembly. formation film-spanning domains (100) fcc as result added...
Convective deposition is widely used to deposit a highly ordered and uniform layer of monosized particles from solution by drawing the into an advancing thin film that uses capillary forces define their local orientation. This process often plagued formation streaks, regions where accumulate due flux inhomogeneity. Flow occurs in direction orthogonal parallel substrate near streaks enhanced evaporation have accumulated. study investigates nucleated seeds or defects having prescribed...
The majority of high-performance perovskite and polymer solar cells consist a TiO2 electron transport layer (ETL) processed at high temperature (>450 °C). Here, we demonstrate that low-temperature (80 °C) ETL thin film TiOx:Zn1-xCdxS can be used as an effective its band energy tuned by varying the ratio. At optimal ratio 50:50 (vol%), MAPbIxCl1-x PCBTBT:PC70BM achieved 9.79% 4.95%, respectively. Morphological optoelectronic analyses showed tailoring edges homogeneous distribution local...
Abstract Nanosphere lithography is employed to simply fabricate metallic hexagonal nanohole array based on metal deposition within interstices of the nanospheres. In contrast, fabrication nanodisc (inverted pattern array) unavoidably includes an additional step creating a patterned resist layer or use high‐resolution techniques. this work, facile method named “plasma‐etched nanosphere conductivity‐inverted (PENCIL)” developed gold disc arrays indium tin oxide (ITO)‐coated glass by...
Hot-electron transfer between an electrode surface and adsorbate is potentially useful in numerous electrochemical technologies, especially those operating at room temperature. Although challenging, estimation of the parameters controlling such a process fundamentally important to design utilization. Herein, nanothin Au/SiO2/Si electrodes are fabricated analyzed for source, generation, energetic characteristics, interfacial photogenerated hot electrons using excitation wavelength- electron...
The AISI 304 specimens were modified by a pulsed fiber laser to form metal oxide layer as solar absorber for optical property improvement.
A polydimethylsiloxane film patterned by a self-assembled array has been demonstrated as strain sensor. monolayer of 580 nm polystyrene spheres prepared convective deposition was the template to transfer periodic pattern (PDMS) film. Optical diffraction through stretched PDMS film, enabled sensing perpendicular and parallel stretching direction, with sensitivities 1.7 nm/% 4.0 strain, respectively. The used vibration sensor at 50 Hz.
Cermet-based solar absorbers containing nickel (Ni) in a nanochain (NC) structure embedded an aluminum oxide (Al2O3) film demonstrated high absorptance of more than 90% the spectrum. In this work, Ni NCs were successfully prepared by simple chemical reduction method without assistance template or magnetic field. The formation nanoparticles (NPs) different configurations was controlled adjusting NaOH:NiCl2 molar ratio. Not only NaOH used to adjust solution pH but it also induced reaction be...
This research studies the physical, superhydrophobic, and optical properties of functionalized silica-coated copper phthalocyanine (CuPc) pigments. The silica coating was confirmed by size increase atomic ratio silicon coated Under optimal conditions, green blue shades pigments were enhanced as indicated in solar reflectance at 450–540 nm for CuPc 380–520 blue. total near-infrared (NIR) also increases 10.6 11.5% compared to uncoated pigments, respectively. layer adds a superhydrophobic...
This research presents the development of an innovative antimicrobial coating consisting cuprous oxide (Cu2O) integrated with metal–organic framework MIL-53(Al) through eco-friendly and low-cost synthesis method that employs glucose as a reducing agent under mild conditions. The microstructural properties composite materials were characterized by using X-ray diffraction (XRD) transmission electron microscopy (TEM). antibacterial efficacy Cu2O-MIL-53(Al) (CuM) was assessed against Escherichia...
Plasmonic field enhancement localized around metallic particles is useful for improving sensitivity in sensing applications. In this research, we used finite-difference time-domain modelling to study plasmonic an array of polystyrene covered with gold, understand the effect incident polarization and particle shape. The gold shapes were changed from a perfect sphere ellipsoid vertical height varying as 930 nm, 880 nm 830 while horizontal diameter was fixed at nm. simulated structure composed...
Abstract In past decades, nanotechnology has attracted much attention among researchers and industries due to its high potential of adding significant values the original materials. Thin film coating with nanomaterial can provide new properties enhance performances pristine surfaces for certain applications. this research, we investigated development superhydrophilic self-cleaning coatings solar panels using colloidal silica nanoparticles. The consist nanoparticles average size 30 nm, sodium...