A5073191575- Advanced Thermoelectric Materials and Devices
- Thermal Radiation and Cooling Technologies
- Chalcogenide Semiconductor Thin Films
- Advanced Semiconductor Detectors and Materials
- Thermal properties of materials
- Innovative Energy Harvesting Technologies
- Energy Harvesting in Wireless Networks
- Phase-change materials and chalcogenides
- Advanced Thermodynamics and Statistical Mechanics
- Heat Transfer and Optimization
- Wireless Power Transfer Systems
- Advanced MEMS and NEMS Technologies
- Topological Materials and Phenomena
- Rare-earth and actinide compounds
- Intermetallics and Advanced Alloy Properties
- Advanced Surface Polishing Techniques
- Advanced Fiber Optic Sensors
- Advanced Materials Characterization Techniques
- Mechanical and Optical Resonators
- Acoustic Wave Resonator Technologies
- Thermography and Photoacoustic Techniques
- Catalysis and Oxidation Reactions
- Metallurgical and Alloy Processes
- Surface and Thin Film Phenomena
- Photonic and Optical Devices
University of Southampton
2008-2018
Université de Montpellier
2000-2001
Belarusian State University
1998-2000
Microwires and nanowires have been manufactured by using a wide range of bottom-up techniques such as chemical or physical vapor deposition top-down processes fiber drawing. Among these techniques, the manufacture wires from optical fibers provides longest, most uniform robust nanowires. Critically, small surface roughness high-homogeneity associated with (OFNs) provide low loss allow use for new applications communications, sensing, lasers, biology, chemistry. OFNs offer number outstanding...
This paper reports the fabrication and testing of Bismuth Tellurium (Bi2Te3) – Antimony (Sb2Te3) based thermocouples using screen printing technology. In this study, printable thermoelectric pastes were developed transport properties cured material measured. The dimension each planer thermoleg is 39.3 mm × 3 with a thickness 67 μm for Bi2Te3 leg 62 Sb2Te3 leg. A single thermocouple can generate voltage 6 mV peak output power 48 nW at temperature difference 20°C. calculated Seebeck...
A series of alkylchalcogenostibines have been synthesised and employed as precursors for the chemical vapour deposition Sb<sub>2</sub>Te<sub>3</sub> Sb<sub>2</sub>Se<sub>3</sub>. Variations in substrate temperature give different film morphologies, patterned arrays can be deposited using selectivity.
We report the synthesis of highly crystallographically textured films stoichiometric bismuth telluride (Bi(2)Te(3)) in presence a surfactant, sodium lignosulfonate (SL), that resulted improved alignment (110) plane and offered good control over morphology roughness electrodeposited films. SL concentrations range 60-80 mg dm(-3) at deposition potential -0.1 V vs SCE (saturated calomel electrode) were found to yield most crystallinity similar or superior thermoelectric properties compared with...
This work presents a flexible thick-film Bismuth Tellurium/Antimony Tellurium (BiTe/SbTe) thermoelectric generator (TEG) with reduced material resistivity fabricated by screen printing technology. Cold isostatic pressing (CIP) was introduced to lower the of printed materials. The Seebeck coefficient (α) and (ρ) materials were measured as function applied pressure. A prototype TEG 8 thermocouples on polyimide substrate. dimension single element 20 mm × 2 78.4 pm. coiled-up produced voltage...
High-quality films of bismuth antimony telluride were synthesized by electrodeposition from nitric acid electroplating baths. The influence a surfactant, sodium ligninsulfonate, on the structure, morphology, stoichiometry, and homogeneity deposited has been investigated. It was found that addition this particular surfactant significantly improved microstructural properties as well with significant improvement in thermoelectric over those absence surfactant. A detailed microprobe analysis...
High quality, nanostructured Bi2Te3, with an unprecedented degree of positional and orientational control the material form on nanoscale, is readily obtained by low pressure chemical vapour deposition using a new molecular precursor. This system offers convenient method that delivers key structural requirements necessary to improve thermoelectric efficiency Bi2Te3 develop nascent field topological insulators.
High density p-type Bi0.5Sb1.5Te3nanowire arrays are produced by a combination of electrodeposition and ion-track lithography technology. Initially, the Bi0.5Sb1.5Te3 films is investigated to find out optimal conditions for deposition nanowires. Polyimide-based Kapton foils chosen as polymer ion track irradiation nanotemplating Bi0.5Sb1.5Te3nanowires. The obtained nanowires have average diameters 80 nm lengths 20 μm, which equivalent pore size thickness foils. exhibit preferential...
We have demonstrated the fabrication of a thermoelectric energy harvesting device via laser-induced forward transfer intact solid thin films. Thermoelectric chalcogenide materials, namely bismuth telluride (Bi2Te3), selenide (Bi2Se3) and antimony (Bi0.5Sb1.5Te3), were sequentially printed using nanosecond excimer laser onto an elastomeric polydimethylsiloxane-coated glass substrate to form thermocouples connected in series creating generator. The resulting generator Seebeck coefficient...
This paper presents the process development towards a new generation of nanostructured thermoelectric generators for power harvesting from small temperature gradients by using combination traditional silicon microfabrication techniques, electroplating and submicron ion-track nanolithography. Polyimide nanotemplates with pore diameters ranging 30 nm to 120 were fabricated. Preliminary results fabrication poly(methyl methacrylate) (PMMA)-nanostructured templates are reported. Bi2Te3 nanowires...
This paper is concerned with generators that harvest electrical energy from the kinetic present in sensor nodes environment. These have potential to replace or augment battery power which has a limited lifetime and requires periodic replacement limits placement application of node.
In this paper we, report on the design, simulation and initial results of a microgenerator, which converts external vibrations into electrical energy. Power is generated by means electromagnetic transduction with static magnets positioned either side moving coil located silicon structure designed to resonate laterally in plane chip. The development fabrication micromachined microgenerator that uses standard based techniques low cost, batch process presented. Finite element simulations have...
This paper discusses the design, fabrication and testing of electromagnetic microgenerators on silicon. Two different designs power generators are micro-fabricated, Prototype A having a wire-wound copper coil B, an electrodeposited both Deep Reactive Ion etched (DRIE) silicon paddle. The devices were fabricated using standard Micro-Electro-Mechanical Systems (MEMS) processing techniques. For A, maximum measured output was 148 nW at 8.08 kHz resonant frequency 3.9 m/s acceleration. prototype...