Search results

The SiO2 mask was patterned by reactive ion etching (RIE) with a CF4-H2 chemistry.
The structure of simulated MOSFETs (acceptor concentration of p-body: 2×10 16 cm-3, oxide thickness: 60 nm) is similar to that of fabricated MOSFETs.
In the device simulation, the acceptor concentration of p-body and oxide thickness were varied, and the critical channel length has been determined for each structure.
Considering SiC and Si MOSFETs with the same structure, the potential inside the channel region should be mainly determined by the expansion of depletion layer from the drain region, and not by bandgap itself.

Starch was a naturally abundant polysaccharide, and its structure was inhomogeneous including crystal region and amorphous region.
However, in crystal region, the structure was tightly-packed and it was difficult to achieve a high water-absorbing capacity if the crystal region was not destroyed.
The superabsorbent polymer synthesized by co-cross-linking using N, N’-methylene bisacrylamide as Cross-linker had poor absorption rate and low starch utilization rate, probably one reason was that cross-linking reaction which formed network structure mainly occurred between the neighboring acrylamide groups, hence water-absorbing capacity of starch did not work because its crystal region has not been broken; another reason was that the flexibility of macromolecular chain descended when it was copolymerized and cross-linked.
[3] Lim D W, Song K G, Yoon K J: Synthesis of acrylic acid-based superabsorbent interpenetrated with sodium PVA sulfate using inverse-emulsion polymerization [J] European Polymer Journal, 2002,38 (3) ：579-586 [4] Suda K, Wararuk C, Manit S: Radification of water absorption od cassava starch by acrylic acid/acrylamide [J] Radiation Physics and Chemistry, 2002,59 (4) ：413-427

Thus, this will limit their application for electrolyte-support cell structure designs.
Therefore, many wet chemistry methods have been introduced to prepare high quality nanocrystalline powders to decrease the sintering temperatures and sintering times of Barium zirconate and Barium cerate based materials [20].
Also, phases purity and structures were characterized by XRD, using a Philips X’pert X-ray diffractometer equipped with a graphite monochromatized Cu Kα radiation (λ =1.540598 Å).
The obtained results show that they have a cubic perovskite structure and belong to the P m-3m space group.

Synthesis and Electronic Transport Properties of Sn-doped CoSb3 Kwan-Ho Park1, Jae-Yong Jung1, Jung-Il Lee 1, Kyung-Wook Jang 2, Whan-Gi Kim 3 and Il-Ho Kim 1* 1 Dept. of Materials Science and Engineering / RIC-ReSEM, Chungju National University, Korea 2 Dept. of Advanced Materials Engineering, Hanseo University, Korea 3 Dept. of Applied Chemistry / RIC-ReSEM, Konkuk University, Korea *ihkim@cjnu.ac.kr Keywords: Skutterudite, Thermoelectric, Transport property Abstract.
A calculation of the band structure of CoSb3 showed a well-defined indirect gap between the valence band and conduction band from P to Г [3].
The substitution of Co or Sb by dopants can affect the electronic structure and electrical properties, particularly the carrier masses.
Sn can affect the electronic structure of CoSb3 and generate excess charge carriers (holes).

Sponge Ti, plate Ti, and fore kinds of chip Ti showed generation of several cracks and expansion of volume owing to change of lattice structure after hydrogen penetration.
Hydrogen penetration into titanium tetrahedral and octahedral lattice structures is an exothermic reaction.
So, supply of activation energy makes hydrogen gas penetrate into metal, resulting in metal hydride in metastable phase. [4, 5, 6] Penetration of hydrogen into titanium lattice causes change of crystal structure, leading to cracks at boundaries between metal particles.
[6] V.V.Lunin and Yu.I.Solovetskii: Russian Journal of Physical Chemistry (September 1985), P. 1257

Fabrication of High Strength α-SiAlON/BN Composition Ceramics by Hot Pressing Yingchun Shan1,a, Guang Wang1, Hui Ye1, Xiaoguang Han1, Jiujun Xu1,b* and Jiangtao Li2 1Department of Materials Science and Engineering, Dalian Maritime University, Dalian 116026, China 2Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China ashanychun@126.com, bjjxu@dlmu.edu.cn Keywords: SiAlON/BN; Hot pressing; Flexural strength Abstract.
The ability to absorb liquid constituents into its structure can potentially be utilized to prepare refractory materials subjected to the elevated-temperature environment.
For all the samples, because maximum pressure has been added to the samples before 1200 °C, h-BN should contribute to the densification of the powder due to its flack structure during pressuring.
Firstly, the hexagonal structure of BN is same as that of graphite, and the strength of BN also raise with the increase of temperature in some temperature range.

Melt-blown PP nonwovens have unique mesh structure, relatively high porosity, hydrophobicity, oleophilicity, reusability, and high output, which are most essential features for oil sorbents.
The microstructures of the samples exhibit mesh structure, which creates inter-fiber voids, and the smooth exterior and solid interior morphologies guarantee a favorable mechanical character, which sustains its reusability.
And this leads to the special structure shown in Fig. 2 B1 and high porosity, which guarantee a swift oil-sorption rate and a sufficient storage space for the adsorbed oil.
H: Journal of Macromolecular Science, Part A, Pure and Applied Chemistry, Vol. 51 (2014), p.88

Sutami 36A Kentingan Surakarta 57126 Indonesia 2Department of Chemistry, Faculty of Mathematics and Natural Sciences Universitas Sebelas Maret Jl.
This mechanism has been compared with that of a junction structure similar to the p-n junction of conventional semiconductors.
An understanding of the HOMO-LUMO structure may encourage broader applications of organic semiconductor materials, such as photodetectors [3,4].
Seki, Energy Level Alignment and Interfacial Electronic Structure at Organic/Metal and Organic/Organic Interfaces, Adv.

It is thought that P(PEGA-HAM)/PEG has higher degree of cross-linking for cross-linked network structure, and reduces the degree of freedom of motion, which affect the well-defined structure of macromolecular chain, resulting in crystallization and enthalpy is decreased.
But the loss of PEG of P(PEGA-HAM)/PEG, which is caused by the decline of coated of crosslinked network structure.
Wang, et al.: Science China Chemistry 56 (2013), p. 716 [6] H.

Their structures were identified by IR, MS, 1H NMR and 13C NMR.
A list of the compounds and their structures and biological activities are presented in Table 1.
Table 1 Anti-bacterial activity of target compounds in vitro Compounds MIC [μg/ml] for: EC83-1a EE25922b SC79-6c SATCC25923d SC500e PPA01f olaquindox 25 3.13 25 50 6.25 25 3 6.25 3.13 50 50 50 3.13 4 6.25 25 50 50 25 50 5 3.13 3.13 6.25 50 3.13 3.13 aEscherichiacoliC83-1 bEscherichia coliATCC25922 cSalmonellaC79-6 dStaphylococcusATCC25923 eSalmonellaC500 fP.aeruginosa PA01 Chemistry Melting points were determined with a Mettler FP82&/FP80 apparatus (Greifense, Switzerland) and have not been corrected.
Its structure is quinoxalin-1,4-dioxide derivatives, and it have the same anti-bacterial activity and growth-promoting effect as quinoxaline compounds.