Materials Literature
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It is shown that the short-circuit photocurrent measured under illumination in Pb(Zr,Ti)O3 epitaxial films is strongly dependent on the metal used as the top electrode. The magnitude of the photocurrent varies by more than 2 orders of magnitude from Pt (largest signal) to Al (smallest signal). The differences are for…
In this work, the in-fiber shock propagation in Dyneema® has been studied such that the shock propagated along the axis of one of the fiber directions. A fast moving precursor wave was detected that corresponded to the elastic wave velocity of the fibers suggesting that the fibers themselves were acting as wave guides…
Abstract An in depth analysis on twin variant selection and twin growth character during compression by means of “interrupted in situ” EBSD orientation measurement was carried out. An experimental verification and geometrical analysis of the use of Schmid's law as a criterion for selecting twin variants was performed,…
Abstract To introduce thiol–ene chemistry in the modification of composites by ionic liquid (IL), a novel functional IL, 1‐methylimidazolium mercaptopropionate (MimMP), was synthesized and investigated as a modifier for styrene–butadiene rubber/silica composites. MimMP could be hydrogen‐bonded with silica and react wi…
Single-crystal Cu(001) layers, 4-1400 nm thick, were deposited on MgO(001) with and without a 2.5-nm-thick TiN(001) buffer layer. X-ray diffraction and reflection indicate that the TiN(001) surface suppresses Cu-dewetting, yielding a 4 × lower defect density and a 9 × smaller surface roughness than if grown on MgO(001…
The magnetocaloric effect (MCE) in antiferromagnetic borocarbide superconductor RNi2B2C (R = Dy, Ho, and Er) compounds have been investigated by measuring the temperature and field dependences of heat capacity. An inverse MCE was observed, which is attributed to the nature of the antiferromagnetic state under low magn…
Carbon nanotube thin film transistors (CNT-TFTs) are fabricated on flexible substrates using purified, surfactant-based CNT suspensions, with >95% semiconducting CNT fraction. The TFTs are made up of local bottom-gated structures with aluminum oxide as the gate dielectric. The devices exhibit high ON current de…
Present work reports the influence of deposition parameters, i.e., the effect of the type of substrate on the optical properties of a-Ge20Se70-xIn10Bix (x = 0, 2, 4, 6, 8, and 10) thin films. Optical constants were accurately determined by envelope method using transmission spectra in the wavelength region of 400–1800…
Femtosecond laser pulses are focused on a thin film of Ge2Sb2Te5 phase-change material, and the transfer of the illuminated material to a nearby substrate is investigated. The size, shape, and phase-state of the fabricated pattern can be effectively controlled by the laser fluence and by the thickness of the Ge2Sb2Te5…
Dendrimers and silica inorganic materials are two effective building blocks that have attracted growing interest in both fundamental and applied material chemistry. The fruitful association of these soft and hard skeletons resulted in an unlimited library of materials and nanodevices with different tailored properties…
We report on the investigation of the potential application of different forms of amorphous carbon (a-C and a-C:H) as an antireflective coating for crystalline silicon solar cells. Polymeric-like carbon (PLC) and hydrogenated diamond-like carbon films were deposited by plasma enhanced chemical vapor deposition. Tetrah…
A two-laser technique is used to investigate heat spreading along individual single walled carbon nanotube (SWCNT) bundles in vacuum and air environments. A 532 nm laser focused on the center of a suspended SWCNT bundle is used as a local heat source, and a 633 nm laser is used to measure the spatial temperature profi…
In spin-mechanics, the magnetoelastic coupling in ferromagnetic/ferroelectric hybrid devices is exploited in order to realize an electric-voltage control of magnetization orientation. To this end, different voltage-induced elastic strain states are used to generate different magnetization orientations. In our approach…
An adaptive finite-element semi-smooth Newton solver for the Cahn–Hilliard model with double obstacle free energy is proposed. For this purpose, the governing system is discretized in time using a semi-implicit scheme, and the resulting time-discrete system is formulated as an optimal control problem with pointwise co…
A series of the as-burnt supported metallic catalysts (Co/SiO 2 ) were prepared by a novel surface impregnation combustion method using cobalt nitrates (noted as M) and citric acid (noted as CA), and burnt in the argon atmosphere. H 2 and CH 4 which were derived from the decomposition of the CA, acted as the reducing…
Free standing graphene-diamond hybrid films have been fabricated using saturated hydrocarbon polymers as seeding material by hot filament chemical vapor deposition technique. The films are characterized with x-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microsco…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Chin-Kai Chang, Hui-Lung Kuo, Kea-Tiong Tang, Shih-Wen Chiu; Optical detection of organic vapors…
Magnetic and magnetostrictive properties of magnetic-annealed polycrystalline CoFe2O4 were investigated. The magnetic hysteresis loops showed obvious uniaxiality with an induced easy direction parallel to the annealing field. Magnetic force microscopy study revealed that the domains were fixed by magnetic annealing. T…
Dendrimers, by virtue of their therapeutic value, have recently generated enormous interest among biomedical scientists. Advancement of dendrimeric nano-architecture with well defined size, shape and controlled exterior functionality embraces promise in biomedical and pharmaceutical applications such as drug delivery,…
We study the structural and electronic properties of Fe doped (4–8 at. %) and undoped TiO2 thin films deposited by pulsed laser deposition on Si(111) substrate. The films grow in single phase anatase structure of TiO2 as revealed by x-ray diffraction and Raman spectroscopy measurements. The Fe doped films reveal room…