Materials Literature
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ABSTRACT This paper deals with a triallyl monomer bearing a rigid adamantane‐like core derived from myo ‐inositol, a naturally occurring cyclic hexaol. The core structure of the monomer can be readily constructed by orthoesterification of myo ‐inositol. The polyaddition of the triallyl monomer with dithiols based on t…
We present hybrid nanoline-nanoparticle plasmonic substrates which allow easily achievable sub-5 nm gaps and a possibility of large-area fabrication. These substrates--based on plasmonic nanocavities formed by arrays of plasmonic nanoparticle (NP) dimers lying inside periodic metal nanolines (NLs)--can be used as tuna…
We report on the changes in magnetic properties of SmCo/BaTiO3 multiferroic heterostructures as the BaTiO3 substrate undergoes its structural phase transitions. The observations show that the macroscopic magnetization of the SmCo film is affected by the structural phase transitions of the BaTiO3 substrate. Kerr micros…
Abstract [Cu(SCH 3 )] ∞ nanowires with lengths on the order of hundreds of micrometers were obtained with a facile method from the reaction of Cu(NO 3 ) 2 ⋅3 H 2 O, dimethyl sulfoxide (DMSO), and water under hydrothermal conditions within a large range of DMSO/water ratios and at various temperatures. These highly cry…
In order to extend the photon energy shift of sensitized upconversion processes based on triplet-triplet annihilation in multicomponent organic systems, we have demonstrated that it is possible to exploit a sequence of consecutive upconversion steps. We have therefore realized an all-optical device for double upconver…
In this work p-ZnO/n-GaN heterojunction diodes were directly formed on the Si substrate by a combination of cost-effective solgel spin-coating and thermal annealing treatment. Spin-coated n-ZnO films on InN/GaN/Si wafers were converted to p-type polarity after thermal treatment of proper annealing durations. X-ray dif…
The first bi-directional thermoelectric based Knudsen pump is made using a multifunctional nanoporous P-type bismuth telluride (Bi2Te3) thermoelectric material. The nanoporous material has been fabricated using a cold pressing and sintering technique under an argon atmosphere. Analysis of the nanoporous thermoelectric…
A series of multicoumarin-functionalized dendrigraft polybutadienes with linear-comb or star-comb topology were synthesized from generation 0 to 3 (LGn and SGn respectively, n = 0–3) to investigate the dendritic effects on photophysical and fluorescence properties. From the results of SEC-TALLS, SEC and ubbelohde visc…
Dehydroxylated silica was modified by grafting reaction of SiHMe2 groups. The resulting material was fully characterized by various methods including infrared and one- and two-dimensional solid-state NMR. This material can further react with dehydrated polyoxometalates (POMs), leading to the formation of a covalent PO…
A simple strategy to improve the efficiency of a ZnO-nanorod-based dye-sensitized solar cell (DSSC) by use of Au-encapsulated carbon dots (Au@C-dots) in the photoanode is presented. The localized surface plasmonic resonance of Au in the 500-550 nm range coupled with the ability of C-dots to undergo charge separation i…
Spin-polarized electron transport through zigzag-edged graphene nanoislands is studied within the framework of the Pariser-Parr-Pople Hamiltonian. By including both short- and long-range electron-electron interactions, the electron conductance is calculated self-consistently for the hexagonal model on various substrat…
FeSe has been an interesting member of the Fe-based superconductor family ever since the discovery of superconductivity in this simple binary chalcogenide. Simplicity of composition and ease of synthesis has made FeSe, in particular, very lucrative as a test system to understand the unconventional nature of supercondu…
Abstract In this study, LiTi 2 O 4 was synthesized as a possible catalyst in the Li‐N‐H system. The properties of hydrogen desorption in the Li‐N‐H system with a homogeneous catalyst have been investigated. The X‐ray diffraction and X‐ray photoelectron spectroscopy results indicated that the single phase of LiTi 2 O 4…
Abstract We present the thermoelectric properties of the quaternary telluride series Tl 10– x – y Sn x Bi y Te 6 including Seebeck coefficient ( S ), electrical conductivity ( σ ), and thermal conductivity ( κ ). Three different Tl concentrations, namely 9, 8.67, and 8.33 Tl per formula unit, were selected followed by…
We describe virtually all known analytical models for predicting protective properties of concrete shields against normal high-speed impact by rigid projectiles. Presented formulas can be directly used in practical calculations. Particular emphasis is given to widely used one-stage and two-stage models which are syste…
HfW2O8 undergoes a dramatic softening where the average bulk modulus (P = 52–414 MPa) drops from 69 GPa at 298 K to 48 GPa at 430 K as the temperature of the WO4 orientation order-disorder transition is approached. This is accompanied by increasingly negative thermal expansivity (−10 ppm·K−1 to −15 ppm·K−1) and revers…
We have demonstrated a universal approach to growing polymer brushes from various substrates. Urushiol was mixed with initiator-containing catechol, and it was spin-coated or cast on various substrates. Because urushiol is strongly adhered to various substrates, the thin film can serve as a general scaffold for grafti…
PACS. 75.10.Nr – Spin-glass and other random models. PACS. 61.20.Gy – Theory and models of liquid structure. Abstract. – We analyze the properties of the energy landscape of finite-size fully connected spin-glass models with a discontinuous transition. In the thermodynamic limit the equilibrium properties in the high-…
A new and easy method of stimuli-triggered growth and removal of a bioreducible nanoshell on nanoparticles is reported. The results show that pH or temperature could induce the aggregation of disulfide-contained branched polymers at the surface of nanoparticles; subsequently, the aggregated polymers could undergo inte…
The crystal structure and anisotropic thermal expansion of K 2 NiF 4 -type CaYAlO 4 have been investigated through neutron powder diffraction experiments from 298 to 1473 K, synchrotron X-ray diffraction measurements at 300 K, and ab initio electronic calculations. The larger thermal expansion coefficient (TEC) along…