Materials Literature
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Abstract Active‐matrix OLED (AMOLED) displays have been fabricated using backplanes with transfer‐printed microscale silicon integrated circuits (ICs) in place of conventional thin‐film transistors (TFTs). The microscale integrated circuits were transfer printed onto a glass substrate and interconnected using a single…
In this paper, two-dimensional (2D) simulation of interdigitated back contact silicon heterojunction (IBC-SHJ) solar cells is presented using Sentaurus Device, a software package of Synopsys TCAD. A model is established incorporating a distribution of trap states of amorphous-silicon material and thermionic emission a…
We review the concepts of excitons and excitonic polaritons, their nonlinear optical properties in nanostructures and their applications within integrated electronics and optoelectronics. Various theoretical aspects of excitons and excitonic polaritons are introduced, followed by a summary of their experimental and ap…
A new technique using left-handed resonator to generate multi-band mm-wave carrier signal is proposed in this paper. The left-handed resonator exhibits non-linear dispersion characteristic which enables uneven spacing between resonant frequencies. A dual band mm-wave oscillator in 90nm CMOS technology is implemented t…
In this paper, we present a betavoltaic micro power source using liquid-semiconductor for the first time. We have fabricated and characterized a MEMS-based micro battery, which is powered by a radioactive source with a liquid-semiconductor-based Schottky diode. Semiconductor properties of liquid selenium are utilized…
Hyperaccumulator biomass harvested after heavy-metal phytoremediation must be considered as hazardous waste that should be contained or treated appropriately before disposal or reuse. As a potential method to detoxify the biomass and to convert this material to a suitable fertilizer or mulch, leaching of heavy metals…
Emerging applications of porous silicon (PS) lies in its ability to incorporate other materials, such as organic groups, organic and inorganic nanoparticles to form (bio)hybrid systems where each individual constituent may be optimized for a particular function. This paper presents our recent experimental results on t…
Ni−Ce catalysts supported over modified smectite were evaluated in the CO 2 reforming of methane by carrying out experiments between 500 and 800 °C under two temperature conditions (increase and decrease) and 30 L g −1 h −1 without previous reduction. The smectite used was modified by aluminum, microwaves treatment, a…
NANOTECHNOLOGY IS AN increasingly hot innovation topic, basing its significance on the foresight that it will fuel countless future advances in materials science, biomedical science, and environmental science [1], [2]. With promises of broad benefits for mankind, nanotech activities are being pursued in many engineeri…
Abstract Transparent conductive polymer of PEDOT/PSS has been applied to top electrodes of flexible electronic‐paper display. High resolution electrode patterning of the polymer materials in a line shape has been performed by laser ablation method. An 8.4‐in. diagonal and 82 dpi flexible electronic paper using quick r…
Abstract : The current report reports on our efforts to simulate the ballistic impact of a fragment simulating projectile (FSP) into a Lexan 9034 polycarbonate (PC)- polymethyl-methacrylate (PMMA), which was a Plexiglas G manufactured by Atofina Chemicals, - Lexan 9034 Polycarbonate laminate system, with and without t…
With the rapid deployment of information technology and the availability of cheap yet high performance image capturing devices, new types of healthcare services such as self-diagnosis and treatment have become possible. Skin is the outer layer of the human body and has long attracted a great deal of attention, since i…
The lowest energy structures of ZnS quantum dots of different sizes have been determined by an unbiased search using genetic algorithm (GA) coupled with the density-functional tight-binding method. The GA search converges to a rather new ringlike configurations of ZnS quantum dots. We have studied the structural, elec…
Abstract We report on the development of low‐temperature gate dielectric materials for zinc indium oxide (ZIO) thin‐film transistors (TFTs). Several films, including ALD HfO 2 and PECVD SiN x (deposited at 175°C and 150°C, respectively), yield good TFT performance. Bias stress‐induced threshold shift for HfO 2 is quit…
We investigate atomic and electronic structures of boron nanotubes (BNTs) by using the density functional theory (DFT). The transport properties of BNTs with different diameters and chiralities are studied by the Keldysh nonequilibrium Green function (NEGF) method. It is found that the cohesive energies and conductanc…
We report on the temperature- and field-driven metal-insulator transition in disordered Ge:Mn magnetic semiconductors accompanied by magnetic ordering, magnetoresistance reaching thousands of percents, and suppression of the extraordinary Hall effect by a magnetic field. Magnetoresistance isotherms are shown to obey a…
Abstract The chemical composition oft he natural arsenate-apatite mineral johnbaumite [nominally Ca10(AsO4)6(OH)2] and its alteration product hedyphane [Ca4Pb6(AsO4)6Cl2] have been determined by electron microprobe analysis and the structures ofjohnbaumite and synthetic Sr-, Ba- and Pbarsenate apatites have been studi…
Abstract Raman spectroscopy has been used to characterize the antimonate mineral bahianite Al5Sb35+O14(OH)2, a semi‐precious gemstone. The mineral is characterized by an intense Raman band at 818 cm−1 assigned to Sb3O1413− stretching vibrations. Other lower intensity bands at 843 and 856 cm−1 are also assigned to this…
Geometrical evolution laws are widely used in continuum modeling of surface and interface motion in materials science. In this article, we first give a brief review of various kinds of geometrical evolution laws and their variational derivations, with an emphasis on strong anisotropy. We then survey some of the finite…
In this paper new magnetron sputtering system for multilayers deposition has been presented. The system allows sputtering of different materials from 4 targets in low pressure of working and reactive gas (oxygen, argon, oxygen + argon). Manufactured structures can be build from films, which have gradient concentration…