Materials Literature
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This chapter first discusses the theory of the ordering, location, and type of defects formed in nematic shells in a mathematically rigorous manner. It then discusses some practicalities of using simulations to investigate nematic shells. Monte Carlo is an important sampling technique, the idea of which is to sample c…
Biophotonics can be defined as the interplay of light and biological matter. The percolation of new optical technology into the realm of biology has literally shed new light into the inner workings of biological systems. This has revealed new applications for optics in biology. In a parallel trend, biomolecules have b…
Selective fabrication of superhydrophilic (S-philic) region on a superhydrophobic (S-phobic) surface requires complex technology and high cost, which has limited applications of extreme wettability patterns. In this paper, a twice-chemical-etching approach without special modification is used to prepare the extreme we…
Iterative phase retrieval of complex valued objects (phase objects) suffers from twin image problem due to the presence of features of image and its complex conjugate in the recovered solution. The twin-image problem becomes more severe when object support is centro-symmetric. In this paper, we demonstrate that by mod…
Device for hardening of external cylindrical surfaces of long details by surface plastic deformation is proposed. Device provides an impact interaction of surface of the detail with massive hardener that eccentrically mounted on it. Spherical deformable bodies are set on working surface of the hardener. Manageable dep…
Although organic solar cells show intriguing features such as low-cost, mechanical flexibility and light weight, their efficiency is still low compared to their inorganic counterparts. One way of improving their efficiency is by the use of light-trapping mechanisms from nano- or microstructures, which makes it possibl…
OBJECTIVES: Carotid endarterectomy (CEA) is a recommended treatment in the prevention of ischemic stroke. However, this procedure may cause neurological complications caused by cerebrovascular damage. While YKL-40 is a proinflammatory protein, neurofilament light polypeptide (NEFL) and brain lipid-binding protein (FAB…
Lead-free (Na0.5Bi0.5)1−xSrxTiO3 (x = 0, 0.04 and 0.06) ceramics with relative densities above 97% were prepared by solid-state synthesis process. Their dielectric, thermal and Raman properties were studied. X-ray diffraction analysis shows perovskite structure with rhombohedral symmetry at room temperature. Sr doping…
The B3LYP functional and CASPT2 method have been applied to investigate the geometrical and electronic structures of η(2)-(S2)MnS(-/0), η(2)-(S3)Mn(-/0), and MnS3(-/0) isomers of MnS3(-/0) clusters. The ground state of the anionic cluster is computed to be the (5)B2 of η(2)-(S2)MnS(-) isomer, whereas that of the anion…
Розглянуто навантажену на нескінченності пластину з центральною тріщиною нормального відриву. В рамках моделі тріщини з зоною передруйнування знайдено аналітичні розв’язки для переміщень берегів тріщини, побудовано систему рівнянь для визначення безпечної довжини тріщини, відповідної довжини зони передруйнування та па…
The measurement of local temperature in nanoscale volumes is becoming a technological frontier. Photoluminescent nanoparticles and nanocolloids are the natural choice for nanoscale temperature probes. However, the influence of a surrounding liquid on the cryogenic behavior of oxidized Si-nanocrystals (Si-NCs) has neve…
In this work, we optimize a dynamical decoupling (DD) protocol to improve the spin coherence properties of a dense ensemble of nitrogen-vacancy (NV) centers in diamond. Using liquid nitrogen-based cooling and DD microwave pulses, we increase the transverse coherence time T2 from ∼ 0.7 ms up to ∼ 30 ms. We extend previ…
Modulus mapping and on-site field emission-scanning electron microscopy (FE-SEM) nanoindentation are both applied for the first time on ‘undisturbed’ healthy human and osteogenesis imperfecta (OI) human cortical bones in this work. Modulus mapping reveals the elastic moduli of hydroxyapatite and collagen to be 189·9 a…
This paper explores the physicochemical and physicomechanical process occurring during the formation of dendrimeric fluorinated polysilsesquioxanes (PSSQ) coated over an active aluminum surface. The changes in chemical composition of PSSQ have been monitored as a function of time and investigated using FTIR 2D correla…
CalE6 from Micromonospora echinospora is a (pyridoxal 5' phosphate) PLP-dependent methionine γ-lyase involved in the biosynthesis of calicheamicins. We report the crystal structure of a CalE6 2-(N-morpholino)ethanesulfonic acid complex showing ligand-induced rotation of Tyr100, which stacks with PLP, resembling the co…
How to tune two-dimensional electron gas at interface of heterostructures is becoming an important question for both fundamental physics and electronic applications. Here, using density functional theory calculations, we find that the polarization state of ${\mathrm{BaTiO}}_{3}$ in metal capped ${\mathrm{BaTiO}}_{3}/{…
Quantitative phase analysis (QPA) using neutron powder diffraction more often than not involves non-ambient studies where no sample preparation is possible. The larger samples and penetration of neutrons versus X-rays makes neutron diffraction less susceptible to inhomogeneity and large grain sizes, but most well-char…
Al5083 powder was subjected to ball milling in liquid nitrogen for 8 h using an attrition ball milling. The evolution of morphology of powder particles and the refinement of grain size were studied by scanning and transmission electron microscopies. The results showed that during cryomilling the morphology of powder p…
We have systematically studied the low-temperature specific heat of the ${\mathrm{BaFe}}_{2\ensuremath{-}x}{\mathrm{Ni}}_{x}{\mathrm{As}}_{2}$ single crystals covering the whole superconducting dome. Using the nonsuperconducting heavily overdoped $x=0.3$ sample as a reference for the phonon contribution to the specifi…
Here, we report on the enhancement of molecular vibrational transitions overtones due to the excitation of surface plasmon polariton waves. We show that, assuming a modified Kretschmann-Reather configuration with ultra-thin dielectric over-layer, the effective absorption cross section of higher harmonics of molecular…