A5064172228- Gas Sensing Nanomaterials and Sensors
- Supercapacitor Materials and Fabrication
- Advanced Sensor and Energy Harvesting Materials
- Advanced Chemical Sensor Technologies
- Analytical Chemistry and Sensors
- Conducting polymers and applications
- Advancements in Battery Materials
- Surface Modification and Superhydrophobicity
- ZnO doping and properties
- Electronic and Structural Properties of Oxides
- Electrochemical sensors and biosensors
- Graphene research and applications
- Ionic liquids properties and applications
- Nanomaterials and Printing Technologies
- Biomimetic flight and propulsion mechanisms
- Transition Metal Oxide Nanomaterials
- Mining and Gasification Technologies
- Dielectric materials and actuators
- Solar Thermal and Photovoltaic Systems
- Mineral Processing and Grinding
- Solar-Powered Water Purification Methods
- Advanced Photocatalysis Techniques
- Microfluidic and Capillary Electrophoresis Applications
- Iron and Steelmaking Processes
- Fluid Dynamics and Thin Films
Phenikaa University
2020-2024
Pennsylvania State University
2019-2023
Hanoi University of Science and Technology
2010-2023
Phenikaa (Vietnam)
2020
Institute for Basic Science
2013-2018
Sungkyunkwan University
2013-2017
Hanoi University
2010
Asymmetric supercapacitors with high energy density are fabricated using a self‐assembled reduced graphene oxide (RGO)/MnO 2 (GrMnO ) composite as positive electrode and RGO/MoO 3 (GrMoO negative in safe aqueous Na SO 4 electrolyte. The operation voltage is maximized by choosing two metal oxides the largest work function difference. Because of synergistic effects highly conductive pseudocapacitive oxides, hybrid nanostructure electrodes exhibit better charge transport cycling stability....
We report a coaxial fiber supercapacitor, which consists of carbon microfiber bundles coated with multiwalled nanotubes as core electrode and nanofiber paper an outer electrode. The ratio volumes was determined by half-cell test each capacitance reached 6.3 mF cm–1 (86.8 cm–2) at diameter 230 μm the measured energy density 0.7 μWh (9.8 power 13.7 μW (189.4 cm–2), were much higher than previous reports. change in cyclic voltammetry characteristics negligible 180° bending, excellent cycling...
The main obstacles to achieving high electrochemical energy density while retaining power are the trade-offs of versus and gravimetric volumetric density. Optimizing structural parameters is key circumvent these trade-offs. We report here synthesis carbon nanotube (CNT)-bridged graphene 3D building blocks via Coulombic interaction between positively charged CNTs grafted by cationic surfactants negatively oxide sheets, followed KOH activation. were intercalated into nanoporous layers build...
Inspired by natural vein-textured leaves, a 2D nanochanneled graphene film with high packing density and efficient ion transport pathways is proposed to facilitate rate capabilities while maintaining energy density. The nanochannels serve as for diffusion parallel the graphene planes in all-solid-state micro-supercapacitors interdigitated electrode geometry.
Abstract A macroscopic carbon nanotube (CNT) sheet‐based heating element having flexible, stretchable, and damage‐tolerant features, wide applicability in harsh environments, is introduced. Because of the intrinsic connection extremely flexible CNT bundles throughout sample by van der Waals interactions without use a binder, electrical resistance variation sheet on elastomer as function strain completely suppressed to some extent, even when stretched under up 400% strain, which guarantees...
Electrochemical capacitors with fast charging-discharging rates are very promising for hybrid electric vehicle industries including portable electronics. Complicated pore structures have been implemented in active materials to increase energy storage capacity, which often leads degrade dynamic response of ions. In order understand this trade-off phenomenon, we report a theoretical model based on transmission line is further combined size distribution function. The successfully explained how...
Dielectrophoresis (DEP) is known as an attractive and frugal technique to manipulate biological particles in microfluidics. This study presents the advanced solution strategy of a DEP-based microfluidic channel for focusing separating cancerous cells continuous flow. Theoretical calculations were carried out define favorable parameters electric field operation microchip. A simulation model was also used explore performance design isolation circulating tumor (CTCs). It revealed that optimal...
For over 20 years, atomic layer deposition (ALD) of platinum (Pt) has gained significant achievements in the fabrication a variety Pt nanostructures for applications different fields, including microelectronics, sensors, catalysis, and energy conversion, storage, utilization devices. By relying on its unique self-saturating surface reactions with diverse precursor chemistries, tunable conditions, various engineering methods, ALD offers capability controlling amount deposited at level...
Nanostructures of titanium nitride (TiN) have recently been considered as a new class plasmonic materials that utilized in many solar energy applications. This work presents the synthesis novel nanostructure TiN has nanodonut shape from natural ilmenite ore using low-cost and bulk method. The nanodonuts exhibit strong spectrally broad localized surface plasmon resonance absorption visible region centered at 560 nm, which is well suited for thermoplasmonic applications nanoscale heat source....
Stretchable conductors can be used in various applications depending on their own characteristics. Here, we demonstrate simple and robust elastomeric that are optimized for stretchable electrical signal transmission line. They withstand strains up to 600% without any substantial change resistance (≤10% as is ≤1% with passivation), exhibit suppressed charge fluctuations the medium. The inherent elasticity of a polymeric rubber high conductivity flexible, highly oriented carbon nanotube sheets...
This work presents a gas-phase approach for the synthesis of Cu2O/TiO2 powder-based photocatalysts using atomic layer deposition (ALD). The process is carried out in fluidized bed reactor working at atmospheric pressure (trimethylvinylsilyl)-hexafluoroacetulacetonate copper(I) as Cu-precursor and H2O vapor oxidizer. saturating regime chemical reactions linear growth ALD are achieved. In combination with unsaturated regime, enables ultrasmall Cu2O clusters average diameters range 1.3 – 2.0...
Many animals use body parts such as tails to stabilize posture while moving at high speed. In flying insects, leg or abdominal inertia can influence flight posture. the hawkmoth Manduca sexta, abdomen contributes ∼50% of total weight and it therefore serve inertially redirect forces. How do torques generated by wings interact for control? We studied yaw optomotor response M. sexta using a torque sensor attached their thorax. visual motion, moved antiphase with stimulus, head torque. By...
The study reported the ability to use soda-modified bentonite applied pelletization of iron ore and its effect on metallurgical properties such as green pellet strength, compressive strength degree reduction. pellets were used in different binders for comparison bentonite, (1, 2 % per weight bentonite), soda. Green tested drop numbers. After drying atmosphere firing, reduced at 900, 1000 1100 ºC 30, 60 120 minutes. obtained results show that when using 1 a binder process gives highest...