Korea Institute of Energy Research posted this:Apparatus for producing silicon nanocrystals based on inductively coupled plasma.Researchers at the Korea Institute of Energy Research have developed a new apparatus for producing silicon nanocrystals based on inductively coupled plasma. Silicon nanocrystals have been widely investigated for several years because of their many interesting properties and potential use in several applications. Recently, silicon nanocrystals have been used in solar cells and light emitting device (LEDs). Silicon is an environmentally friendly material and is utilised for various applications in the field of electronic materials. The field of silicon nanocrystal production has grown enormously of late, in response to the observation of quantum confinement in porous silicon. Silicon is already widely used in the semiconductor industry, in large part because of its nontoxic properties and abundance, being the second most abundant element in the earth’s crust. Due to the high capacity of silicon paired with its relatively environmentally friendly properties it is an ideal material for use as a replacement to more commonly used environmentally costly materials. The common process of producing silicon nanocrystals can be classified into three distinct areas: solid-state reaction, liquid state reaction, and vapour state reaction. The solid-state reaction is the process whereby a thin film of SiO2, Si3N4 or the like containing excess Silicon (Si) is formed and subjected to heat treatment to enable the condensation of silicon and subsequent formation of silicon nanocrystals in a SiO2, Si3N4 or SiC matrix. In the liquid state reaction, silicon nanocrystals are prepared via a chemical reaction of silicon compounds, this is done through the application of variant methods, for example the high-temperature supercritical method. In the vapour state reaction, silicon nanocrystals are prepared by passing a silane compound gas through a high energy region such as laser or plasma. In the case of all three traditional silicon nanocrystals reaction methods (solid, liquid and gas) the process incurs significant cost due to the substantial need for heat energy and expensive deposition equipment. What’s more, in the liquid State reaction issues arise due to the severe difficulty in controlling particle size, which in turn leads to poor crystallinity quality. The vapour state reaction incurs further issues due to the extreme use of energy resulting in aggregated nanocrystals and the formation of secondary particles. To overcome the inherent issues of solid, liquid and vapour silicon nanocrystal reactions non-thermal plasma, such as inductively coupled plasma (IPC) has begun to be used. However, the conventional ICP-based apparatus has limitations and can result in issues pertaining to the management of the particle size of silicon nanocrystals, as well as extending reaction time and deteriorating silicon nanocrystal quality. To combat the aforementioned limitations in silicon nanocrystal production a new apparatus method has been designed, which can minimise plasma diffusion inside the reactor during production using ICP to improve the particle size characteristics and quality of the silicon nanocrystals.
Mahesh Kulkarni posted this:
Assistant Vice President-Business Development at Praj Industries Limited
IVAN RODRIGUEZ ROSELLO posted this:
Licensing Manager at UNIVERSIDAD DE ALICANTE
Universidad de Alcalá-OTRI posted this:Intelligent regulation system of pedestrian crossings by monitoring the waiting areas and adaptive traffic light controlThe research group Intelligent Vehicles and Traffic Technologies of the Automation Department of the University of Alcalá has developed a system that allows the intelligent control of the opening and closing times of a traffic light that governs a pedestrian crossing, especially in urban areas. It is a road safety system that ensures that pedestrian traffic at pedestrian crossings is carried out safely, while optimizing the opening and closing times of traffic lights, achieving an improvement in traffic flow in urban areas. For this purpose, the monitoring of waiting areas for pedestrian crossings is carried out by means of a stereoscopic vision system with infrared illumination. The images provided by the stereoscopic vision system are processed by a computer, obtaining information regarding the presence of pedestrians in the waiting areas. This information is used to act on a traffic light that controls the pedestrian crossing. The group is looking for licensing agreements, technical cooperation agreements, manufacturing agreements and commercial agreements with technical assistance with companies in the sector of transport infrastructure and traffic safety as well as public institutions, such as municipalities and councils.
LYDIA BARES LOPEZ posted this:
Innovation Manager at UNIVERSITY OF CADIZ
UNIVERSIDAD DE ALICANTE posted this:Production of briquettes for energy recovery of furniture waste with polyurethane foamsThe Research Group "Waste, energy, environment and nanotechnology" (WEEN) from the University of Alicante has developed a new compact material and a production process of briquettes of furniture waste. This process makes it possible to carry out the management and the energy recovery of this waste, avoiding the environmental problems associated with its landfilling and also making it easier to transport, handle and store. The briquettes obtained, show physicochemical characteristics similar to the conventional and they have a high energy density being able to be used as fuel for thermal power plants or industrial boilers. Companies in the waste treatment sector and the furniture industry that are interested in commercial exploitation of this technology through licensing agreements and / or technical cooperation are sought.
RAMOT at Tel Aviv University Ltd. posted this:Renewable Clean EnergyRenewable energy sources such as solar and wind energy, and bio-mass for bio-fuels. Solar energy, MEMS energy converters, thermal energy storage, combined heat and power, biofuel production, water disinfection/ desalination, and cogeneration of power and biofuels. Project ID : 12-2011-234
DIT Hothouse posted this:Wind Urchin: A 3D Spherical AnemometerThe Wind Urchin is a novel instrument for the simultaneous measurement of wind speed, direction and turbulence. It is effectively a multidirectional anemometer which uses multiple Pitot tubes incorporated into a unique spherical design to provide simultaneous real-time data on all elements of wind and uniquely turbulence.
Centre Technology Transfer CITTRU posted this:Ecological solid fuel additive, which improve fuel combustion efficiency and decrease soot generation.Solid fuel eco-additive reduces soot production and deposition on chimney walls, flues and boiler installation. Moreover it doesn't cause boiler corrosion. Consequently it improves boiler thermal efficiency and fuel combustion effectiveness. That means lower costs of heating. It also modifies soot to be biodegradable, prevents releasing soot-related pollutions and isn't harmful to human health.
UNIVERSIDAD DE ALICANTE posted this:Noble metal-free ceria-based diesel soot combustion catalyst, suitable for gas purification in Diesel engine exhaustsThe developed catalyst does not use Pt, which leads to a cheaper product. The resulting catalyst shows equal or even better performance as Pt catalysts. Following the patented procedure of synthesis, the catalyst produced has a lower particle size. This leads to higher surface per particle and therefore, a better ratio yield when interacting in oxidation reactions, leading to a higher oxygen production rate.
Centre Technology Transfer CITTRU posted this:The new oxide catalysts for the removal of nitrogen oxides originating from stationary emission sources.The experiments carried out with the assistance of these catalysts showed a high conversion efficiency of nitric oxide to nitrogen at relatively low temperatures – up to 100%. Designed reactor allows the direct removal of nitric oxide from the exhaust gases via the efficient decomposition of nitric oxide and, at the same time, systematic removal of carbon particles and other solid particles.
UATEC - Unidade de Transferência de Tecnologia posted this:Planar diamond thermistors for harsh environments: applied to temperature measurements in combustion and jet engines for the automobile and aerospace industry, lasers, fuel cells and in biological and aggressive chemical environmentsThe new diamond thermistors can be used for temperature measurements in harsh environments such as aggressive chemicals at high temperature or in biological media due to their inertness. Furthermore, the sintered ceramic substrate guarantees superior adhesion and resistance to fracture under high mechanical loads. The fabricated temperature sensitive diamond surface comprises well adhered ohmic contacts deposited on the backside of the dielectric ceramic substrate. This configuration prevents interaction between the temperature sensitive surface and the surrounding environment which is essential for biochemical devices applications. Furthermore, the planar geometry of the disclosed thermistor maximizes the contact region between the temperature sensitive surface and any solid flat surface on which it is placed. In this way, improved response times are obtained comparing to traditional round shaped thermistors.
UNIVERSIDAD DE ALICANTE posted this:“No-Noble-Metal” Catalytic trap to remove Hydrocarbons, NOx and CO emissions from combustion enginesBasically, the catalytic trap bed is composed of a zeolite with a Si/Al ratio between 10 and 20. The zeolite is partially interchanged with cations of one or several non-noble metals. In order to achieve an optimum performance of the catalytic trap, these metals should be interchanged in the internal zeolite structure, and never on its external surface. In this way, the outflow of the exhaust gases passes through the catalytic trap bed to adsorb the HC at low temperatures. The material has been developed at laboratory scale. Different compositions of this material have been tested with simulated streams of internal combustion engines (cold starts). As a result, the material is able to reduce HC emissions in internal combustion engines operating with both mixtures almost stoichiometric and low fuel mixtures. The main difference between this invention and other existing materials is that this catalytic trap avoids any element or additional layer composed of an oxidation catalyst based on noble metals. Consequently, HC emissions could be totally removed through a single bed without using high-cost materials (noble metals) or further stream treatments. This fact allows the catalytic trap to be placed in any position according to the different control systems employed for decreasing other pollutant emissions existing in the gases stream, since the total elimination of HC takes place on the catalytic trap. Thus, this technology development results in a solid material where coexists metal(s) and protons in an optimum ratio inside of the zeolite channels, leading to a system that can act as a HC trap and as an oxidation catalyst in only a single bed, during the whole cold start cycle. The main innovative aspect of this catalytic trap is that the adsorbent material can capture the hydrocarbons in the cold start of the engine and oxidize gases during its warmed-up operating conditions without using noble metals, which are frequently used as oxidation catalyst. At high temperatures, this material is able to carry out total oxidation of both hydrocarbons retained by the catalytic trap and those present in the exhaust gas stream. Consequently, the resulting gas stream released to the atmosphere is innocuous in hydrocarbons. • Noble metals are not used. • Structural advantages, since the control systems are simplified and pollutants in internal combustion engines are reduced. • Economic benefits (The price of noble metal is approximately 100 times more expensive than the materials employed by the researchers). • The catalytic trap can be placed in any position with regard to different control systems. • Besides its hydrocarbon trapping role, the system can also act as oxidation catalyst during the cold-start cycle.
Centre Technology Transfer CITTRU posted this:Catalysts for low-temperature combustion of methane from low-caloric sources and methods for their preparationDue to the rising emission of methane and its extensive contribution to the greenhouse effect, the reduction of CH4 emissions from low-caloric anthropogenic sources is currently a vital importance. The main sources of the methane emission are: exploitation of oil pools, coal mining, pas power stations, landfills, agriculture and biomass. The most popular method of the reduction of methane is its catalytic combustion. Unfortunately, this method has few limitations associated mainly with hard activation of the C-H bond in CH4 and low concentrations of methane in the emitted gases. The catalytic oxidation of methane is limited also by the very large airflows (of order 105 m3/min), passing through the catalyst bed during the process. There is still a lack on the market of a technological solution based on total catalytic combustion of CH4 in the economically reasonable low-temperature window, i.e. below 400 °C. The most popular method among the methods limiting the emission of methane to the atmosphere is the one based on its catalytic combustion. However, this procedure has disadvantages, mainly due to the high activation energy of methane molecules and also because of the low concentration of methane emitted from anthropogenic sources. There is no technology allowing effectively combusting of methane with the concentration of 1-2 % and in the economically justified temperatures, i.e. lower than 400 °C. The fundamental advantages of offered solutions are: - method for preparing catalysts that ensures the repeatability of the parameters and high efficiency in the reactions of methane combustion, - increased both the activity and the thermal stability of the catalysts in comparison with other systems described in the literature, - possibility of using the catalysts in the total oxidation of methane emitted from the low-caloric sources at temperatures below 400 °C.
RAMOT at Tel Aviv University Ltd. posted this:Energy Conversion and TransmissionPower electronics, including high efficiency conversion, photovoltaic systems, and piezoelectric sensors and transmitters enabling energy transmission to human tissue via, for example, implanted medical devices. Project ID : 12-2011-233