Materials Literature
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We formed Cu(In,Ga)(S,Se) 2 films using a three-stage process. The grain size of the films was reduced by increasing their S concentration. Judging from the phase diagrams of Cu–S and Cu–Se, a decrease in grain size with the increase in S concentration may be due to the higher the melting point of Cu 2 S compared to t…
TiO 2 -based resistive switching memory devices with an inserted ZnO layer were fabricated, and the effect of inserting a ZnO layer between the TiO 2 and bottom electrode on the reliability characteristics of TiO 2 -based memory devices was investigated. The improved endurance and retention performances were achieved…
Penelitian ini bertujuan untuk mengetahui kinerja isolator polimer jenis epoksi resin 20 kV dalam kondisi kabut garam dan dibandingkan dengan kabut bersih. Pengukuran dilakukan dalam suatu kamar kabut (Test Chamber) yang temperaturnya diatur menjadi 3 tingkatan, yakni tingkat rendah (00 – 250C), sedang (250 – 350C) da…
In the USA, Forest Products Laboratory (FPL), part of the US Forest Service, has opened a pilot plant for the production of wood-derived cellulosic nanomaterials. Located in Madison, WI, the US$1.7 million facility is the first of its kind in the USA and establishes FPL as the country's leading producer of forest-base…
We have successfully prepared ZnCuInS 2 (Zn 2 x Cu 1- x In 1- x S 2 , ZCIS) thin films by spray pyrolysis deposition (SPD). The bandgap of the ZCIS thin film was widely controlled from 1.4 to 3.4 eV by substituting Zn for Cu and In of CuInS 2 (CIS). The resistivity of the ZCIS film was controlled by adjusting depositi…
Fuel cells are electrochemical devices that convert chemical energy of fuels directly into electrical energy without the Carnot limitation. Even in the smallest power range of less than 10 kW, fuel cells exhibit electrical efficiencies of 35-50 %LHV (lower heating value). Therefore, the fuel cell which can be operated…
Background and objective: The use of silver nanoparticles is one of the functional areas of nanotechnology. These nanoparticles have an antibacterial and antifungal quality. The active ions released form silver nanoparticles can produce free radicals and damage different types of cell. Considering the importance of he…
TiO2 thin films were deposited by reactive d.c magnetron sputtering method on a glass substrate with various ratio of gas flow (Oxygen /Argon) (50/50, 100/50 and 150/50) at substrate temperature 573K. It can be observe that the optical energy gap of TiO2 thin films dependent on the ratio of gas flow (oxygen/argon), it…
通过在聚合物电池内部加入Ag半透明增反膜, 构建光学谐振腔, 实现了光线在Ag薄层和金属电极之间的多次反射. 这样可增加活性层对光的吸收, 提高量子效率, 进而大幅度提高短路电流, 优化电池性能. 实验中使用具有较低能带结构和宽吸收光谱的新型聚合物PCDTBT作为电子给体材料和PC71BM作为电子受体材料, 通过控制薄膜生长过程和优化膜层厚度使转化效率达到5.08%. 在此基础上, 加入Ag作为半透明增反层, 促使光线在Ag薄层和金属电极之间往复反射传输, 大幅提高量子效率和短路电流. 通过改变Ag薄层的厚度获得最大的短路电流密度和光电转换效率, 实验得出当Ag厚度为8 nm时, 短路电流达到最大15.0 mA/cm2, 光电转换…
“Composites are the combination of a reinforcement fibre in a thermoset polymer resin matrix, where the reinforcement has an aspect ratio that enables the transfer of loads between fibres, and the fibres are chemically bonded to the resin matrix.” FRP (fibre reinforced plastic) Sandwich structure are defined as a thre…
The electrical properties of CdO/porous Si/c-Si heterojunction prepared by deposition of CdO layer on porous silicon synthesized by electrochemical etching were studied. The structural, optical, and electrical properties of CdO (50:50) thin film prepared by rapid thermal oxidation were examined. X-ray diffraction (XRD…
Electrical energy is one of the fundamental resources of the modern industrial society. Electrical power is available to the user instantly, at the correct voltage and frequency, at exactly the amount needed. The power system maintains its steady state mainly because of the correct and quick remedial action taken by t…
This paper deals with the implementation of carbon nanotube as electrode in supercapacitor to store much more energy .the author also consults with the problem may face and try to resolve the problems.
The biomechanics of domestic cat lapping (Felis catus) and domestic dog lapping (Canis familiaris) is currently under debate. Lapping mechanics in vertebrates with incomplete cheeks (cheeks that cannot form suction for oral liquid ingestion, often carnivorous vertebrates 1, 9), such as cats and dogs, is a balance of i…
A method is presented for determining the dynamic contact angle at the three-phase contact between a solid, a liquid, and a vapor under an applied force, using molecular simulation. The method is demonstrated using a Lennard-Jones fluid in contact with a cylindrical shell of the fcc Lennard-Jones solid. Advancing and…
We investigate the electronic structures of InGaN 2 nanotubes (NTs) using first-principles calculations. It is found that all four types of InGaN 2 NTs, with the same diameter, have similar stability. The total energy of the per unit InGaN 2 NT depends on its diameter due to the curvature effect. The zigzag (armchair)…
In this study, the penetration and perforation performance of nanoclay reinforced unsaturated polyester resin/fibreglass nanocomposite laminates have been investigated via quasi-static indentation tests using ahemispherical nose indenter. Unsaturated polyester resin (UP) was mixed with 1.5 and 3 wt.% nanoclay using a…
This paper describes the first study of algal assemblages at 6 spring sites within Sherwan Mazn subdistrict between October 2011 to March 2012, with particular reference to abundance, distribution and periodicity were investigated in the samples collected.A total of 42 species was identified in 3 divisions, among them…
The United States Department of Energy’s Next Generation Nuclear Plant (NGNP) Advanced Gas Reactor (AGR) Fuel Development and Qualification Program will be irradiating up to seven separate low enriched uranium (LEU) tri-isotopic (TRISO) particle fuel (in compact form) experiments in the Advanced Test Reactor (ATR) loc…
Polymeric nanocomposite films from PEDOT and MEH-PPV embedded with surface modified TiO2 nanoparticles were prepared, respectively for the hole transport layer (HTL) and emission layer (EL) in Organic Light Emitting Diodes (OLED). The composite of MEH-PPV + nc-TiO2 was used for Organic Solar Cells (OCS). The results f…