Materials Literature
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Abstract For the process of electrospinning, either water or organic solvents are used as solvents depending upon the solubility of the materials to be spun. For many applications, such as tissue engineering, biomedical, agricultural, etc., the toxicity of the organic solvent used could be highly critical. Besides thi…
The application of the dynamic light scattering (DLS) method for determining the size distribution of colloidal gold nanoparticles in a range of 1–100 nm is discussed. It is shown that rotational diffusion of nonspherical strongly scattering particles with sizes of larger than 30–40 nm results in the appearance of a f…
Progress in the electrospinning techniques has brought new methods for the production and construction of various nanofibrous assemblies. The parameters affecting electrospinning include electrical charges on the emerging jet, charge density and removal, as well as effects of external perturbations. The solvent and th…
The objective of this work was to investigate the use of nanocrystalline cellulose (NCC) as a drug delivery excipient. NCC crystallites, prepared by an acid hydrolysis method, were shown to have nanoscopic dimensions and exhibit a high degree of crystallinity. These crystallites bound significant quantities of the wat…
BACKGROUND: On the basis of preclinical studies of NC-6004, a cisplatin-incorporated micellar formulation, we hypothesised that NC-6004 could show lower toxicity than cisplatin and show greater anti-tumour activity in phase I study. METHODS: A total of 17 patients were recruited in a range of advanced solid tumour typ…
Invisibility cloaks, which used to be confined to the realm of fiction, have now been turned into a scientific reality thanks to the enabling theoretical tools of transformation optics and conformal mapping. Inspired by those theoretical works, the experimental realization of electromagnetic invisibility cloaks has be…
The field of nanoplasmonics is young but rich in phenomena that have inspired practical uses in physics, biomedicine, environmental monitoring, and national security.
Gd 2 O 3 -doped CeO 2 (GDC) and La 0.6 Sr 0.4 Co 0.2 Fe 0.8
In order to experimentally check the Ni doped In2O3 as a potential spintronic material and to search for high temperature ferromagnetic material, a series of (In1−x Ni x )2O3 (x = 0.03, 0.05, and 0.07) nanoparticles were prepared by sol–gel method. Lattice parameter measurement shows distinct shrinkage of the lattice…
Al(NO3)3·9H2O, ZrOCl2·8H2O, and NH4OH solution were used as starting materials to synthesize Al2O3-40 wt% ZrO2 nano composite powder for plasma spraying by sol–gel method. The results showed that δ-Al2O3 and θ-Al2O3 transformed to α-Al2O3 gradually with the heating temperature rising from 900°C to 1200°C, and only α-A…
Measurements of partial discharges (PDs) at high frequency voltages is important but not a straightforward task. In this paper a PD measuring system developed for use at repetitive, steep voltage waveforms is presented, which is based on electrical detection using capacitive decoupling of the PD signals. The system ut…
The crystallographic orientations of m-plane ZnO on (112) LaAlO3 (LAO) substrate are [1¯21¯0]ZnO∥[111¯]LAO and [0001]ZnO∥[1¯10]LAO. The defects in m-plane ZnO have been systematically investigated using cross section and plan-view transmission electron microscopy (TEM). High-resolution TEM observations in cross sectio…
This article uses a different geometrical structure of inrush current with respect to that of fault current for the identification of transformer magnetizing inrush. For this purpose, the differential current is considered as a stochastic signal, and two schemes based on stochastic analysis of differential currents ar…
Magnesium dichloride supported titanium tetrachloride catalyst with mixed internal donor, comprised of ethylbenzoate and sulfolane, were synthesized. The composition characteristics of catalysts indicate incorporation of sulfolane to max 8.2 wt%, in addition to ethylbenzoate. The amount of incorporated donors in solid…
Abstract Biomorphic SiC ceramics produced by the forced infiltration with liquid silicon of carbon matrices derived from hardwood precursors were investigated. The phase composition of the ceramics obtained was found to be dependent on the mass ratio of the initial silicon and carbon components, the synthesis temperat…
본 연구에서는 LCD 컬러필터 레지스트용 fluorene 단위 구조를 가지는 다기능 바인더 고분자를 개발하여 카본블랙 기반 감광성 레지스트(CBR)를 제조하고 블랙 매트릭스(BM)에 적용하였다. 다기능 바인더 고분자를 얻기 위해 bisphenol fluorene epoxy acrylate를 함유한 불포화 폴리에스터(BFEA-polyester)를 합성하였으며 이는 1H NMR, GPC 및 FTIR을 이용하여 분석하였다. 합성된 BFEA-polyester 바인더 고분자를 상업용 아크릴 바인더와 비교 평가하기 위하여 각각 CBR 제조 후 BM 리소그래피 테스트를 수행하였…
A cause of aging and cascaded failure of high voltage insulators is investigated by assessing the radiation propagating from a faulty insulator. The transfer of electromagnetic energy from corona discharge to healthy insulators situated on the same power pole is assessed. The results show that the high intensity of el…
This paper discusses the plant-oriented instrumentation developed for a solid electrolyte-based hydrogen sensor. The sensor detects any event of steam leak at the steam generator of fast breeder reactors, by continuously monitoring the hydrogen concentration in secondary sodium. A specially designed in situ preamplifi…
We integrated a piezoelectric sensing layer lamina containing liquid crystals (LC) and spiropyran (SP) in a LC/SP mixture to create an optically reconfigurable modal sensor for a cantilever beam. The impedance of this LC/SP lamina was decreased by UV irradiation which constituted the underlying mechanism to modulate t…
Thermomechanical cycles including programming, cooling, unloading and heating to trigger the 1WE were examined for a shape memory polymer (SMP), Tecoflex® (TFX EG-72D). Cycles were performed at 60°C with 50% and 225% strains and the recovery time of 10 min. Strains evolving with time were estimated during the thermome…