A5063603300- Catalytic Processes in Materials Science
- Semiconductor materials and devices
- Electronic and Structural Properties of Oxides
- Electrocatalysts for Energy Conversion
- Machine Learning in Materials Science
- Nanoplatforms for cancer theranostics
- Ga2O3 and related materials
- Catalysis and Oxidation Reactions
- ZnO doping and properties
- nanoparticles nucleation surface interactions
- Nanoparticle-Based Drug Delivery
- Copper Interconnects and Reliability
- Electron and X-Ray Spectroscopy Techniques
- Metal-Organic Frameworks: Synthesis and Applications
- Nanomaterials for catalytic reactions
- Glioma Diagnosis and Treatment
- Gas Sensing Nanomaterials and Sensors
- RNA Interference and Gene Delivery
- Photodynamic Therapy Research Studies
- Advanced Photocatalysis Techniques
- Quantum Dots Synthesis And Properties
- Asymmetric Hydrogenation and Catalysis
- Catalysis and Hydrodesulfurization Studies
- Advanced biosensing and bioanalysis techniques
- Copper-based nanomaterials and applications
Amrita Vishwa Vidyapeetham
2013-2023
Ghent University
2013-2022
Ghent University Hospital
2014-2021
University of Antwerp
2019
Amrita Institute of Medical Sciences and Research Centre
2019
Laboratoire de physique des Solides
2018
Institute of Medical Sciences
2013
Localized and controlled delivery of chemotherapeutics directly in brain-tumor for prolonged periods may radically improve the prognosis recurrent glioblastoma. Here, we report a unique method nanofiber by fiber anti-cancer drug, Temozolomide, orthotopic one month using flexible polymeric nano-implant. A library drug loaded (20 wt%) electrospun PLGA-PLA-PCL blends with distinct vivo brain-release kinetics (hours to months) were numerically selected single nano-implant was formed...
Abstract Synthetic methods that allow for the controlled design of well-defined Pt nanoparticles are highly desirable fundamental catalysis research. In this work, we propose a strategy allows precise and independent control particle size coverage. Our approach exploits versatility atomic layer deposition (ALD) technique by combining two ALD processes using different reactants. The areal density is tailoring number cycles trimethyl(methylcyclopentadienyl)platinum oxygen, while subsequent...
Thermal atomic layer deposition (ALD) of platinum is usually achieved using molecular oxygen as the reactant gas and temperatures in 250–300 °C range. In this work, crystalline thin films metallic Pt have been grown by ALD at low 100 (methylcyclopentadienyl)trimethylplatinum (MeCpPtMe3) precursor ozone gas. The novel process characterized a constant growth rate 0.45 Å per cycle within 100–300 temperature window. are uniform with impurity levels close-to-bulk resistivities even lowest...
We demonstrate an ALD process for Ga<sub>2</sub>O<sub>3</sub>that relies upon sequential pulsing of tris(2,2,6,6-tetramethyl-3,5-heptanedionato)gallium(<sc>iii</sc>), [Ga(TMHD)<sub>3</sub>] and O<sub>2</sub>plasma enables the deposition from temperatures as low 100 °C.
This paper reports the performance of hydrogen evolution reaction (HER) electrocatalysts based on Pt thin film electrodes that are encapsulated by silicon oxide (SiOx) nanomembranes. membrane-coated electrocatalyst (MCEC) architecture offers a promising approach to enhancing stability while incorporating advanced catalytic functionalities such as poison resistance and tunable selectivity. Herein, room-temperature ultraviolet (UV) ozone synthesis process was used systematically control...
We demonstrate an ALD process for Fe<sub>2</sub>O<sub>3</sub> that relies upon sequential pulsing of ter-Butyl ferrocene (TBF) and O<sub>2</sub> plasma enables the deposition from temperatures as low 150 °C.
Since their early discovery, bimetallic nanoparticles have revolutionized various fields, including nanomagnetism and optics as well heterogeneous catalysis. Knowledge buildup in the past decades has witnessed that nanoparticle size composition strongly impact nanoparticle's properties performance. Yet, conventional synthesis strategies lack proper control over morphology composition. Recently, atomically precise of been achieved by atomic layer deposition (ALD), alleviating particle...
Crystalline In2O3 thin films were deposited by atomic layer deposition (ALD) using tris(2,2,6,6-tetramethyl-3,5-heptanedionato) indium(III), [In(TMHD)3] as an indium source and O2 plasma. Resulting growth rates studied a function of precursor pulse, reactant temperature, number ALD cycles. The film rate was found to be 0.14 Å/cycle within the wide temperature window 100–400 °C. X-ray photoelectron spectroscopic (XPS) diffraction (XRD) analysis revealed stoichiometric with polycrystalline...
We present the in situ synthesis of Pt nanoparticles within MIL-101-Cr (MIL = Materials Institute Lavoisier) by means atomic layer deposition (ALD). The obtained Pt@MIL-101 materials were characterized N₂ adsorption and X-ray powder diffraction (XRPD) measurements, showing that structure metal organic framework was well preserved during ALD deposition. fluorescence (XRF) transmission electron microscopy (TEM) analysis confirmed highly dispersed with sizes determined pore an increased loading...
The effects of applying an alumina (Al2O3) coating by atomic layer deposition, with a thickness about ∼1 nm, on two PtGa catalysts (PtGa/MgAl2O4 and Pt/MgGaAlO) were explored for the propane dehydrogenation reaction (PDH). combined application small angle X-ray scattering (SAXS) absorption spectroscopy (XAS) was employed samples to gain insight into effect this catalyst stability. restricted mobility surface metal nanoparticles, thereby preventing sintering catalyst. On PtGa/MgAl2O4...
MIL‐101 giant‐pore metal‐organic framework (MOF) materials have been loaded with Pt nanoparticles using atomic layer deposition. The final structure has investigated by aberration‐corrected annular dark‐field scanning transmission electron microscopy under strictly controlled low‐dose conditions. By combining the acquired experimental data image simulations, position of small clusters within individual pores a determined. embedding is confirmed tomography, which shows distinct ordering...
<italic>In situ</italic>GISAXS during thermal annealing for unraveling the factors and mechanism governing coarsening of supported Pt nanoparticles.
The functionalized low-dimensional surface oxides of liquid metal Galinstan were employed as the main component heterostructured optoelectronic devices.
The chemical transformations taking place during the formation of catalytic Pt–Ga alloyed nanoparticles supported on calcined Ga-modified hydrotalcite Mg(Ga)(Al)Ox are investigated. starting point is a Pt(acac)2 precursor impregnated onto support. An oxidative treatment first yields Pt nanoparticles, while subsequent reduction efficiently delivers Ga from support framework to Pt, forming clusters. Different steps discerned in this process based situ XAS analysis. During heating 350 °C,...
The N<sub>2</sub>incorporation into an atomically-thin In<sub>2</sub>O<sub>3</sub>film at Au/In<sub>2</sub>O<sub>3</sub>–TiO<sub>2</sub>heterointerfaces enabled the synergistic improvement of long-term plasticity (LTP) artificial metal oxide optical synapses.
A plasma-enhanced atomic layer deposition (ALD) process using the Ag(fod)(PEt3) precursor [(triethylphosphine)(6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedionate)silver(I)] in combination with NH3-plasma is reported. The steady growth rate of reported (0.24 ± 0.03 nm/cycle) was found to be 6 times larger than that previously Ag ALD based on same H2-plasma (0.04 0.02 nm/cycle). characteristics and processes were verified. deposited films polycrystalline face-centered cubic for both...
The nucleation rate and diffusion-driven growth of Pt nanoparticles are revealed with<italic>in situ</italic>X-ray fluorescence scattering measurements during ALD: the particle morphology at a certain loading is similar for high low precursor exposures.
This work demonstrates the ability of nanosecond 193 nm laser radiation to selectively ablate biological material on a glass substrate.
Abstract Alloyed metal nanocatalysts are of environmental and economic importance in a plethora chemical technologies. During the catalyst lifetime, supported alloy nanoparticles undergo dynamic changes which well‐recognized but still poorly understood. High‐temperature O 2 –H redox cycling was applied to mimic lifetime model Pt 13 In 9 nanocatalysts, while monitoring induced by situ quick X‐ray absorption spectroscopy with one‐second resolution. The different reaction steps involved...