A5024166665- Cultural Heritage Materials Analysis
- Carbon Nanotubes in Composites
- Electron and X-Ray Spectroscopy Techniques
- Building materials and conservation
- X-ray Spectroscopy and Fluorescence Analysis
- Conservation Techniques and Studies
- Archaeology and ancient environmental studies
- Geological and Geochemical Analysis
- Corrosion Behavior and Inhibition
- Advanced Sensor and Energy Harvesting Materials
- Force Microscopy Techniques and Applications
- Color Science and Applications
- Nanotechnology research and applications
- Advanced Electron Microscopy Techniques and Applications
- Ion-surface interactions and analysis
- Metal Extraction and Bioleaching
- ZnO doping and properties
- Gas Sensing Nanomaterials and Sensors
- Geochemistry and Geologic Mapping
- Interactive and Immersive Displays
- Recycling and utilization of industrial and municipal waste in materials production
- Supramolecular Self-Assembly in Materials
- Polydiacetylene-based materials and applications
- Neuroscience and Neural Engineering
- Microwave and Dielectric Measurement Techniques
Hong Kong Baptist University
2024-2025
University of Da Nang
2024
Museum Conservation Institute
2017-2024
Smithsonian Institution
2017-2024
Luna Innovations (United States)
2023
Moscow State University of Civil Engineering
2018
Hanoi National University of Education
2018
Hanoi University of Natural Resources and Environment
2018
National Institute of Standards and Technology
2012-2017
Center for Nanoscale Science and Technology
2012-2017
Abstract— Carbon‐nanotube (CNT) films on plastic are incorporated as the touch electrode in a four‐wire resistive panel. Single‐point actuation tests show superior mechanical performance to ITO electrodes, with no loss of device functionality up 3 million actuations. Sliding‐stylus‐pen reveal linearity after 1 stylus cycles. A CNT refractive index ∼1.55 leads panels low reflection (<9% over visible range) without costly anti‐reflective coatings. PET currently have 86% total transmission...
Carbon nanotube (CNT) reinforced polymers are next-generation, high-performance, multifunctional materials with a wide array of promising applications. The successful introduction such is hampered by the lack quantitative understanding process-structure-property relationships. These relationships can be developed only through detailed characterization nanoscale reinforcement morphology within embedding medium. Here, we reveal three-dimensional (3D) high volume fraction (V(f)) aligned...
Nonuniform fields decrease the accuracy of dielectric characterization by microwave cavity perturbation. These are due to slot in through which sample is inserted and boundary between metallic walls inside cavity. To address this problem, we measured natural frequency damping ratio a resonant as into rectangular We found that for range filling fractions, linear regression on versus effective volume fraction could be used extract complex permittivity sample. verified our technique measuring...
Phase equilibria of the Al2O3–CaO–FeO–SiO2–V2O3 system in synthetic slag mixtures simulating coal–petcoke chemistry at 1500 °C an oxygen partial pressure 10–8 atm were investigated by a series quench experiments. Quenched samples analyzed inductively coupled plasma optical emission spectrometry (ICP), X-ray diffractometry (XRD), transmission electron microscopy (TEM), and wavelength dispersive (WDX). Two precipitated crystal phases identified molten slags: mullite (3Al2O3·2SiO2) Al2O3-rich...
Based on self‐assembly and mimicking strategies occurring in nature, peptide nanomaterials play a unique role new generation of hybrid materials for the electronics 21st century. This report describes functionalization diphenylalanine (FF)‐based micro/nanostructures with blue‐emitting conducting polymers polyfluorene (PF) family. The FF:PF polymer nanocomposites are synthesized by liquid‐vapor phase method. Electron microscopy images reveal di‐octyl‐substituted PF (PF8) to bind better FF...
In this study, berberine nanoparticles (BerNPs) were prepared using a wet-milling method with zirconium balls to enhance bioavailability and expand potential applications. The particle size physicochemical properties of the BerNPs analyzed field-emission scanning electron microscopy (FE-SEM), UV-vis spectroscopy, X-ray diffraction, Fourier-transform infrared spectroscopy. broth dilution was used determine antimicrobial activity against Streptococcus mutans (S. mutans). impact on cell surface...
Background: A comprehensive framework of nursing competencies is essential for ensuring quality healthcare and guiding education, professional development, the creation competency assessment tools. Numerous frameworks have been introduced worldwide to guide education development. Nevertheless, these often differ significantly in structure implementation, creating challenges standardization cross-contextual application. In Vietnam, Core Nursing Competency Standards issued 2022 define five key...
The utility of gold nanorods for plasmonic applications largely depends on the relative orientation and proximity nanorods. Though side-by-side or chainlike nanorod morphologies have been previously demonstrated, a simple reliable method to obtain high-yield oriented assemblies remains significant challenge. We present facile, scalable approach which exploits meniscus drag, evaporative self-assembly, van der Waals interactions precisely position orient over macroscopic areas 1D...
In this paper, silver (Ag) nanoclusters-loaded graphitic carbon nitride (g-C3N4) nanosheets are synthesized and their physical properties as well photocatalytic activities systematically investigated by different techniques. The existence of Ag atoms in the form nanoclusters (NCs) rather than well-crystallized nanoparticles evidenced X-ray diffraction patterns, SEM images, XPS spectra. deposition on surface g-C3N4 affect crystal structure slightly reduce band gap energy g-C3N4. sharp...
Transmission electron microscope (TEM) tomography was used to visualize the morphology and 3D connectivity of a lithographically templated, self‐assembled bilayer film cylinder‐forming 45.5 kg/mol polystyrene‐ block ‐polydimethylsiloxane. The structure, formed after 5 min solvothermal anneal, imaged with resolution ≈3 nm in 3D, enabling comparison between measurement self‐consistent mean‐field theory (SCFT) calculations. Images etched unetched samples showed that etching collapsed PDMS...
Zinc (carboxylate) soaps, formed by reactions between zinc oxide (ZnO) and fatty acids in a drying oil, are known to cause deterioration the paint layers of modern contemporary oil paintings. This study investigates carboxylates that developed an painting test panel designed mimic aging degradation encountered actual works art. Following accelerated natural aging, protrusions were noted on surface panel. A large protrusion with erupted gel features was extracted from panel, mounted top view,...
Carbon nanotube composites are lightweight, multifunctional materials with readily adjustable mechanical and electrical properties—relevant to the aerospace, automotive, sporting goods industries as high-performance structural materials. Here, we combine well-established newly developed characterization techniques demonstrate that ultraviolet (UV) light exposure provides a controllable means enhance conductivity of surface commercial carbon nanotube–epoxy composite by over 5 orders...
Abstract Achieving high spatial resolution in matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) is crucial for detailed molecular mapping biological tissues and cells. However, conventional MALDI-MSI platforms are typically limited to resolutions of 5-20 μm, restricting their ability visualize fine subcellular structures. Here, we present a novel ten-fold expansion (10X ExMSI) method that attains 500 nm without the need specialized optics or customized...
We have revealed the 3D structure of Li-ion batteries composed LiCoO<sub>2</sub>cathode, LiPON electrolyte and Si anode deposited around nanowires as a scaffolding core.
Abstract Dark and clear silicate glasses formed during an iron age vitrification event ≈ 1500 years ago at the Broborg hillfort near Uppsala, Sweden have been analyzed using a scanning electron microscope equipped with micro-X-ray fluorescence (μXRF) spectrometer. Correlated µXRF beam-induced energy dispersive spectrometry (EDS) X-ray maps were collected via stage-scanning constant velocity. This coupled procedure represents new approach for cultural heritage community to conduct analytical...
To provide detailed information to aid conservators faced with soot removal, a survey comparing the removal of lamp black pigment, serving as model soot, from three sample papers differing roughness is presented. The efficacy ten different dry surface cleaning materials—including sponges, firm and kneaded erasers, eraser crumbs, putty, solvent-free polydimethylsiloxane elastomer, swab—have been assessed using handheld color spectrophotometer image analysis photomicrographs. Inspection...
The demystification of how 19th-century novelly designed materials became significant elements modern technological, economic, and cultural life requires a complete understanding the material dimensions historical artifacts. objects frequently described as earliest manufactured plastic products-the billiard balls made by John Wesley Hyatt his associates from late 1860s-are examined closely for first time are found to be more complex functionally successful than has been described. Modern...