Publisher’s Note: Localized Magnetic States in Graphene [Phys. Rev. Lett.101, 026805 (2008)]
Received 14 July 2008DOI:https://doi.org/10.1103/PhysRevLett.101.039903©2008 American Physical Society
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Encapsulated Nanoparticles Produced by Pulsed Laser Ablation of MoS2−Te Composite Target
Encapsulated nanoparticles were produced by the pulsed laser ablation of MoS 2 −Te composite targets in a high vacuum chamber. Transmission electron microscope and X-ray energy dispersive spectrometer measurements showed that core-like Mo-rich nanoparticles were encapsulated with shell-like Te-rich materials. Layer st…
Characterization of frequency-dependent glass transition temperature by Vogel–Fulcher relationship
The complex mechanical modulus of polymer and polymer based composite materials showed a frequency-dependent behaviour during glass transition relaxation, which was historically modelled by the Arrhenius equation. However, this might not be true in a broad frequency domain based on the experience from the frequency de…
Elastic coupling in polymer stabilized ferroelectric liquid crystals
The elastic coupling between a polymer network and liquid crystal has been studied in both the SmA * and SmC * phases of a polymer stabilized ferroelectric liquid crystal polymerized in the SmA * phase. Experimental electric field dependent tilt angle and polarization data are analysed through the SmA * to SmC * trans…
Selective Trapping of Volatile Fission Products with an Off-Gas Treatment System
An off-gas treatment system is being developed for the collection of volatile fission products during a head-end processing step. The head-end processing step employs high temperatures to oxidize UO2 to U3O8 resulting in the separation of fuel from cladding and the removal of volatile fission products. Three volatile…
Magnetostriction and hysteresis of ⟨1 1 0⟩ oriented Tb0.29Dy0.48Ho0.23Fe2single crystal
Magnetostriction behaviour and magnetostriction hysteresis of the single crystal alloy Tb 0.29 Dy 0.48 Ho 0.23 Fe 2 are investigated experimentally and theoretically. The oriented ⟨1 1 0⟩ single crystals of the magnetostrictive alloy Tb 0.29 Dy 0.48 Ho 0.23 Fe 2 are successfully prepared by the optical floating zone m…
Characteristics of a new power generation system with application of a Shape Memory Alloy Engine
Abstract It is necessary to develop new power generation systems using the unused low‐temperature thermal energy around 100 °C from the viewpoint of global warming prevention. Even if a shape memory alloy is bent at normal temperature, when it is warmed, it has the character that it returns to the original straight fo…
How Electron Localization Function Quantifies and Pictures Chemical Changes in a Solid: The B3 → B1 Pressure Induced Phase Transition in BeO
Advantages of the analysis of the topology of the electron localization function (ELF) in the characterization of the chemical bonding in solids are illustrated in the study of the zinc blende --> rock salt transformation in BeO. The 4-fold to 6-fold coordination change is described as a two-step process: first, a cat…
Fabrication of Tunable Submicro‐ or Nano‐Structured Polyethylene Materials from Immiscible Blends with Cellulose Acetate Butyrate
Abstract Low density polyethylene (LDPE) was prepared into micro‐ or submicro‐spheres or nanofibers via melt blending or extrusion of cellulose acetate butyrate (CAB)/LDPE immiscible blends and subsequent removal of the CAB matrix. The sizes of the PE spheres or fibers can be successfully controlled by varying the com…
Kinetic Investigation of Porphyrin Interaction with Chiral Templates Reveals Unexpected Features of the Induction and Self-Propagation Mechanism of Chiral Memory
Kinetics of the porphyrin aggregation leading to a chiral memory system shows a remarkable "catalytic" effect of the noncovalent templates explaining their self-replication ability.
Impact of the self-assembly of multilayer polyelectrolyte functionalized gold nanorods and its application to biosensing
Multilayered polyelectrolyte functionalized gold nanorods (GNRs) are reported for the conjugation of and sensitive detection of bio-molecules. Multilayered polyelectrolyte functionalized GNRs can significantly improve the biocompatibility of cetyltrimethylammonium bromide (CTAB) coated GNRs in a bio-environment and ca…
Enzymatic Degradation of Monolayer for Poly(lactide) Revealed by Real-Time Atomic Force Microscopy: Effects of Stereochemical Structure, Molecular Weight, and Molecular Branches on Hydrolysis Rates
The influences of the stereochemical structure, the molecular weight, and the number of molecular branches for poly(lactide) (PLA) on enzymatic hydrolysis rates of PLA monolayers were studied by atomic force microscopy (AFM) and the Langmuir-Blodgett (LB) technique. Monolayers of six kinds of PLA with different molecu…
The efficiency of nanotube formation on titanium anodized under voltage and current control in fluoride/glycerol electrolyte
The formation of nanotubes on titanium is compared for anodizing under controlled voltage and controlled current in a fluoride/glycerol electrolyte. Rutherford backscattering spectroscopy and nuclear reaction analysis are employed to determine the film compositions. Film morphologies are examined by electron microscop…
Chemisorption of Molecular Hydrogen on Carbon Nanotubes: A Route to Effective Hydrogen Storage?
The energetics of the chemisorption of molecular hydrogen on small-diameter armchair carbon nanotubes has been investigated using first-principles density functional theory (DFT). The adsorption of hydrogen was examined at a range of coverages, from low to full monolayer coverage. Several pathways for hydrogenation we…
Alpha-irradiation effects in SiO2
Author: Krickl, R. et al.; Genre: Journal Article; Finally published : 2008; Keywords: Alpha-quartz, radiohalo, cathodoluminescence, Raman spectroscopy, He implantation, irradiation, radiation damage, transmission electron microscopy; Title: Alpha-irradiation effects in SiO2
Fibrillar Constructs from Multilevel Hierarchical Self‐Assembly of Discotic and Calamitic Supramolecular Motifs
Abstract We here report on polymeric solid‐state self‐assembly leading to organization over six length scales, ranging from the molecular scale up to the macroscopic length scale. We combine several concepts, i.e., rod‐like helical and disc‐like liquid crystallinity, block copolymer self‐assembly, DNA‐like interaction…
Confinement-Dependent Below-Gap State in PbS Quantum Dot Films Probed by Continuous-Wave Photoinduced Absorption
We have measured continuous-wave (cw) photoinduced absorption (PA) spectra of PbS quantum dot (QD) films with four different sizes over a spectral range of 0.25-0.5 eV at T=10 K. The PA spectrum shows a strong asymmetric IR absorption peak (IR-PA). Both the peak position and shape of this IR-PA indicate distinct confi…
Na doping concentration tuned conductivity of ZnO films via pulsed laser deposition and electroluminescence from ZnO homojunction on silicon substrate
Na doping concentration tuned conductivity of ZnO films via pulsed laser deposition and electroluminescence from ZnO homojunction on silicon substrate, Lin, S S, Ye, Z Z, Lu, J G, He, H P, Chen, L X, Gu, X Q, Huang, J Y, Zhu, L P, Zhao, B H
Replication of fly eyes by the conformal-evaporated-film-by-rotation technique
We replicated a biological template, namely the eye of a fruit fly, at the micro- and nanoscales by implementing the conformal-evaporated-film-by-rotation (CEFR) technique, which allows the replication of even curved biotemplates. Chalcogenide glasses were used for replication due to their infrared optical properties,…
Nanoparticles-doped guest-host liquid crystal displays
The technique, nanoparticles-induced vertical alignment (NIVA), was applied to fabricate a guest-host liquid crystal display (GH-LCD) without conventional alignment layers. The GH-LCD produced by NIVA exhibited a high reflectance of approximately 59% in the voltage-off state and a low threshold voltage of approximatel…