A5053680855- 2D Materials and Applications
- Chalcogenide Semiconductor Thin Films
- Graphene research and applications
- Perovskite Materials and Applications
- Photonic and Optical Devices
- Analytical Chemistry and Sensors
- Quantum Dots Synthesis And Properties
- Plasmonic and Surface Plasmon Research
- Ferroelectric and Negative Capacitance Devices
- Phase-change materials and chalcogenides
- Gas Sensing Nanomaterials and Sensors
- Advanced Memory and Neural Computing
- Advanced Fiber Optic Sensors
- Polydiacetylene-based materials and applications
- MXene and MAX Phase Materials
- Nanoplatforms for cancer theranostics
- Semiconductor materials and interfaces
- Photonic Crystals and Applications
- Metamaterials and Metasurfaces Applications
- Supramolecular Self-Assembly in Materials
- Semiconductor materials and devices
- Catalysis and Hydrodesulfurization Studies
- Advanced biosensing and bioanalysis techniques
- Nanowire Synthesis and Applications
- Quantum-Dot Cellular Automata
University of Southampton
2016-2023
University of Patras
2010-2014
National Hellenic Research Foundation
2013
Abstract This work demonstrates a large area process for atomically thin 2D semiconductors to unlock the technological upscale required their commercial uptake. The new atomic layer deposition (ALD) and conversion technique yields performance uniformity tunability. Like graphene, Transition Metal Dichalcogenides (TMDCs) are prone upscaling challenges limiting They challenging grow uniformly on substrates transfer alternative while they often lack in electrical uniformity. scalable ALD of...
Abstract Unlike MoS 2 ultra-thin films, where solution-based single source precursor synthesis for electronic applications has been widely studied, growing uniform and large area few-layer WS films using this approach more challenging. Here, we report a method growth of that results in continuous over centimetre scale. The is based on the thermolysis spin coated ammonium tetrathiotungstate ((NH 4 ) by two-step high temperature annealing without additional sulphurization. This facile scalable...
Graphene is a two-dimensional material which, as result of its excellent photonic properties, has been investigated for wide range optical applications. In this paper, we propose and fabricate commercial grade broadband graphene-based fiber polarizer using low loss side-polished platform. A high index polyvinyl butyral layer used to enhance the light-graphene interaction evanescent field core guided mode simultaneously obtain extinction ratio ~37.5 dB with device ~1 dB. Characterization...
Abstract The change of optical properties that some usually natural compounds or polymeric materials show upon the application external stress is named mechanochromism. Herein, an artificial nanomechanical metasurface formed by a subwavelength nanowire array made molybdenum disulfide, oxide, and silicon nitride changes color mechanical deformation. aforementioned deformation induces reversible in transmission (relative 197% at 654 nm), thus demonstrating giant mechanochromic effect....
Abstract Laser processing is a highly versatile technique for the post-synthesis treatment and modification of transition metal dichalcogenides (TMDCs). However, to date, TMDCs synthesis typically relies on large area CVD growth lithographic post-processing nanodevice fabrication, thus relying heavily complex, capital intensive, vacuum-based environments fabrication tools. This inflexibility necessarily restricts development facile, fast, very low-cost protocols. Here we show that direct,...
Group IV platforms can operate at longer wavelengths due to their low material losses. By combining graphene and Si Ge platforms, photodetection be achieved by using graphene’s optical properties coplanar integration methods. Here, we presented a waveguide coupled photodetector operating wavelength of 3.8 μm.
A novel approach on lysozyme sensing is proposed by employing Polymer Optical Fibers functionalized successfully with overlayers of block copolymer sensitive materials. The detection scheme based electrostatic interaction between and the copolymer. Low concentration levels have been detected almost spontaneous response times.
A new straightforward approach for the rapid prototyping and low cost development of diffraction gratings remote chemical gas sensing is presented. Sol gel matrices incorporating various salts, as well specially designed polymers are employed investigated sensors' implementation detection agents under a point scheme. The interaction between hybrid materials measurands results in reversible change their optical characteristics that consequently modifies efficiency, resulting an enhanced...
Sol?gel tetramethoxyorthosilicate (TMOS) derived composite thin films comprising embedded NiCl2 nanoparticles, were illuminated and processed by 193 157?nm excimer laser radiation. The effect of different fluences 193?nm the number pulses on material surface was studied. Atomic force microscopy imaging used to evaluate effects irradiation. It found that morphology modified in a controllable way, with physical chemical properties strongly depending illumination conditions. Ablative...