Materials Literature
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We report an all-printed thin-film transistor (TFT) on a polyimide substrate with linear transconductance response. The TFT is based on our purified single-walled carbon nanotube (SWCNT) solution that is primarily consists of semiconducting carbon nanotubes (CNTs) with low metal impurities. The all-printed TFT exhibit…
Dodecyl itaconate (DI) was used as the dispersant for preparation of mono-dispersed carbon nanotubes in aqueous solution in this study. It is a unique type of anionic surfactant synthesized by the authors, and its high capability for dispersing CNTs is attributed to the double bond moiety on its head-group. Furthermor…
Crystallization temperature of GeTe/Ge 2 Sb 2 Te 5 nanocomposite multilayer films can be tuned by adjusting the thickness ratio of GeTe to Ge 2 Sb 2 Te 5 . Phase-change memory devices with GeTe/Ge 2 Sb 2 Te 5 multilayer films exhibited relatively lower RESET voltages as compared to a device with pure Ge 2 Sb 2 Te 5 ,…
Gadolinia-doped ceria (GDC) solid electrolytes with small additions (0.25 wt.%) of SiO X as sintering aids were prepared by the sol–gel method. Material characteristics of the prepared and calcined electrolyte samples were identified by X-ray diffraction for crystalline structures and scanning electron microscopy for…
This study investigates the thermoluminescence produced when calcium sulfate codoped with Eu3+ and Pr3+ (CaSO4:Eu3+,Pr3+) is irradiated with X-rays. CaSO4:Eu3+,Pr3+ was synthesized by heating CaSO4·2H2O:Eu3+,Pr3+ at 1050°C. The CaSO4:Eu3+,Pr3+ exhibited red emission upon X-ray irradiation and subsequently emitted an a…
Corrosion is one of the important structural integrity concerns of aging aircraft, and it is estimated that a significant portion of airframe maintenance budgets is directed towards corrosion-related problems for both military and commercial aircraft. In order to better understand how environmental factors influence t…
The behavior of hydrogen in an ultrafine-grained electrodeposited pure iron with Lankford (r) value larger than 7.0 was studied by small angle neutron scattering (SANS) and thermal desorption spectroscopy (TDS). Nano-sized inhomogeneity consisting of hydrogen bubble exists in the deposited specimen. The bubble size in…
Polyurethane pressure-sensitive adhesives as raw materials for the manufacturing of protective films The present paper relates to water-borne polyurethane pressure-sensitive adhesives (PU-PSA) systems for self-adhesive protective films, and methods of their preparation. The typical protective films are self-adhesive f…
We have been developing low power cryogenic readout electronics for space borne large format far-infrared image sensors. As the circuit elements, a fully-depleted-silicon-on-insulator (FD-SOI) CMOS process was adopted because they keep good static performance even at 4.2K where where various anomalous behaviors are se…
A new methodology of binding energy calculation with respect to different spin arrangements for a multiatomic electron system is developed from the first principle in the frame of the exchange perturbation theory (EPT). We developed EPT formalism in the general form of the Rayleigh‐Srchödinger expansion with a symmetr…
The inhibition of Cu oxidation by alloying C into the Ru/TaN barrier stack is investigated. By using in-situ XRD measurement, severe copper oxide formation was observed for the Cu/Ru/barrier system during annealing process in He atmosphere. This phenomenon is explained using thermodynamics from the viewpoint of Gibbs…
Carbon nanotubes (CNTs) reinforced natural rubber (NR) composite was fabricated in a solvent casting method. The tensile properties and electrical resistivities were investigated. As a comparison, carbon black (CB) reinforced NR was also prepared in the same method. The initial modulus of NR/3 wt% CNT composite was ab…
In the present study, we report the contact angle hysteresis and drainage behavior of water drops on a number of brass surfaces with parallel microgrooves and compare them to the flat baseline surfaces. Parallel micro-grooves with different groove dimensions are fabricated by micro end-milling process without any modi…
Single crystals of N-Acetyl Glycine Phosphite (AGPI) were grown from aqueous solution by low temperature solution growth technique. Formation of the new crystal has been confirmed by single crystal XRD studies. AGPI belongs to monoclinic system with cell parameters a = 7.419 Å, b = 8.487 Å, c = 9.791 Å. Crystalline qu…
The differences of properties for both single-layered and multi-layered porous silicon were investigated. Multistructured porous silicons such as DBR or rugate porous silicon exhibit strong reflection resonances providing the reflection of a specific wavelength in the optical reflectivity spectrum. DBR PSi displays a…
Electron backscattered diffraction (EBSD) has been used to study samples of archaeological gold, silver, copper and bronze prepared using simple metallographic etches. EBSD maps of orientation and local misorientation revealed the metals’ microstructures and deformation substructures, and from this, combined in some c…
International audience
CaCu3Ti4O12(CCTO)材料因其极高的介电常数和良好的温度稳定性，而具有广阔的应用前景。本文采用改进的草酸盐共沉淀法制备CCTO纳米粉体及其陶瓷，通过FT-IR、TG-DTA、XRD，TEM及SEM对前驱体、预烧粉体及其陶瓷进行表征，并测试陶瓷的介电性能。结果表明，采用改进草酸盐共沉淀制备的前驱体经过850 ?C/2h预烧得到了CCTO纳米粉体，经980 ?C/4h烧结得到了具有高介电常数的致密陶瓷（介电常数24500，介电损耗0.13）。改进后的制备方法降低了反应温度、缩短了反应时间，而且无需有机溶剂或者添加草酸钠沉淀剂；工艺简单，材料性能明显提高，成本大大降低。 The CaCu3Ti4O12(CCTO) mater…
The manuscript presents a chronological review of studies dealing with the influence of the effect of superplasticity (SP) on improved solid state weldability of crystalline materials. On the basis of the analysis of the results of research works mainly made at the Institute for Metals Superplasticity Problems (IMSP)…
Tremendous progress has been attained in seeking and optimizing the biodegradable polymers with appropriated properties in modern industrial application and biomedical uses. In this chapter, we give a brief introduction of how biodegradable polymers have played an enormous role in environmental and biomedical use. Bio…