Materials Literature
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A single molecular layer of titanium diselenide (TiSe2) is a promising material for advanced electronics beyond graphene-a strong focus of current research. Such molecular layers are at the quantum limit of device miniaturization and can show enhanced electronic effects not realizable in thick films. We show that sing…
Excitons, trions, biexcitons, and exciton-trion complexes in two-dimensional transition metal dichalcogenide sheets of ${\mathrm{MoS}}_{2}, {\mathrm{MoSe}}_{2}, {\mathrm{MoTe}}_{2}, {\mathrm{WS}}_{2}$, and ${\mathrm{WSe}}_{2}$ are studied by means of density functional theory and path-integral Monte Carlo method in or…
Research into nanotechnology applications for use in agriculture has become increasingly popular over the past decade, with a particular interest in developing novel nanoagrochemicals in the form of so-called "nanopesticides" and "nanofertilizers." In view of the extensive body of scientific literature available on th…
Recent strategies to prepare "omniphobic" surfaces have demonstrated that minimizing contact angle hysteresis (CAH) is the key criterion for effectiveness. CAH is affected by chemistry and topography defects at the molecular and higher levels, thus most surfaces exhibit significant CAH. Preparative methods for stable…
Self-quenching in the aggregation state is overcome, and tunable solid-state photoluminescence of carbon-dot powder is achieved. Furthermore, based on the controllable optical property in organic solvents, a novel concept, i.e., constructing dual-fluorescence morphologies from single luminescent species, is presented…
The use of unconventional lignocellulosic fibres for development of fabric and nonwovens has come into existence due to the great demand associated with conventional fibres like cotton and silk. Eco friendliness and sustainability are the concepts underlying textile manufacture and marketing of textile products. Desig…
This paper proposes a method of restoration of wooden structures by impregnating polymer composition based on epoxy resin, locally weakened destruction. Objective - research and development of technology for site remediation of wooden structures with areas of locally de-graded wood. We analyzed the causes of the destr…
Produced by templated sol-gel method mesoporous nanosized titania powders modified with 3d-metal ions have been characterized by XPS and TPR methods. Metal species formed on the titania surface were investigated. The TPR analysis showed that reduction behaviors of the M n+ /TiO 2 were strongly affected by the synthesi…
Despite its widespread application in the fields of ophthalmology, orthopedics, and dentistry and the stringent need for polymer packagings that induce in vivo tissue integration, the full potential of poly(methyl methacrylate) (PMMA) and its derivatives as medical device packaging material has not been explored yet.…
In this work, six new compound derivatives from thiophene were synthesised. The three symmetrical compounds were synthesised containing two heterocyclic 1,2,3-triazole on each side of thiophene, 2,5-disubstituted and the three non-symmetrical compounds were synthesised containing alkyne groups as a spacer in replacing…
Abu sekam padi umumnya mengandung silika (SiO2) sebesar 86,90-97,30% dan sejumlah kecil alkali dan logam pengotor. Kandungan silika yang tinggi pada abu sekam padi dapat digunakan sebagai alternatif sumber silika yang potensial dalam sintesis natrium silikat. Natrium silikat murni disintesis melalui dua tahap, yaitu i…
Partial 2H-to-1T phase transition in two-dimensional (2D) WS 2 grown by pulsed laser deposition is discovered through X-ray photoelectron spectroscopy. The resulting hybrid structure is observed only on substrates of the noble metals Ag and Au, whereas other metals such as Ni and Al produced only 2H-WS 2 . The origin…
We show the dielectrophoretic actuation of single-crystal diamond nanomechanical devices. Gradient radio-frequency electromagnetic forces are used to achieve actuation of both cantilever and doubly clamped beam structures, with operation frequencies ranging from a few MHz to ~50MHz. Frequency tuning and parametric act…
While renewable energies are achieving parity around the globe, efforts to reach higher solar cell efficiencies becomes ever more difficult as they approach the limiting efficiency. The so-called third generation concepts attempt to break this limit through a combination of novel physical processes and new materials a…
The ground state band structure, magnetic moments, charges and population numbers of electronic shells of Cu and Fe atoms have been calculated for chalcopyrite CuFeS2 using density functional theory. The comparison between our calculation results and experimental data (X-ray photoemission, X-ray absorption and neutron…
In order to improve the precision of domain wall dynamics measurements, we develop a coplanar waveguide-based setup where the domain wall motion should be triggered by pulses of magnetic field. The latter are produced by the Oersted field of the waveguide as a current pulse travels toward its termination, where it is…
Silicene is predicted to possess exotic electronic properties and a forerunner amongst all 2D materials for the development of exotic devices using present silicon technology. Here we report the synthesis of free standing layered 2D hexagonal silicene like sheets. Atomic scale structural characterizations have been pe…
SiN x : Tb 3+-Yb 3+, an efficient down-conversion layer compatible with silicon solar cell process Abstract Tb 3+-Yb 3+ co-doped SiN x down-conversion layers compatible with silicon Photovoltaic Technology were prepared by reactive magnetron co-sputtering. Efficient sensitization of Tb 3+ ions through a SiN x host mat…
Magnetic resonance imaging (MRI) contrast agents with high relaxivity are highly desirable because they can significantly increase the accuracy of diagnosis. However, they can be potentially toxic to the patients. In this study, using a mouse model, we investigate the toxic effects and subsequent tissue damage induced…
Single phase of PbBi2Nb2O9 nanoplates was successfully synthesized by a hydrothermal method for the first time, using Pb(NO3)2, Bi(NO3)3·5H2O, and Nb2O5 as the starting materials and NaOH as the mineralizer. The influences of the reaction conditions on the phases and morphologies of the products were investigated by X…