Materials Literature
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Molecular nanowires in which a single molecule bonds chemically to two metal electrodes and forms a stable electrically conducting bridge between them have been studied intensively for more than a decade. However the experimental determination of the bonding geometry between the molecule and electrodes has remained el…
The effects of graphene growth parameters on the number of its layers were systematically studied and a new growth mechanism on Cu substrate was thus proposed. Through the investigation of the graphene growth parameters, including growth substrate types, carrier gases, types of carbon sources, growth temperature, grow…
Simultaneous measurements of tunneling currents and atomic forces on surfaces and adsorbates provide new insights into the electronic and structural properties of matter on the atomic scale. We report on experimental observations and calculations of a strong impact the tunneling current can have on the measured force,…
In this supporting material for the main paper (the preceding submission), we show, in addition to the related information for the experiments, additional discussion that cannot fit in the main paper (due to the space constraint). It includes further discussion about our experimental observations, wider implications o…
Sulci are localized furrows on the surface of soft materials that form by a compression-induced instability. We unfold this instability by breaking its natural scale and translation invariance, and compute a limiting bifurcation diagram for sulcfication showing that it is a scale-free, sub-critical {\em nonlinear} ins…
The atomistic simulations of carbon nanotube (CNT) - carbon reinforced composite material are reported. The studied composite samples were obtained by impregnating certain amounts of CNTs (3,3) and (6,6) into pristine graphite matrix. The addition of CNTs is found to be of significant usefulness for nanotube-reinforce…
The peculiarities in the electronic structure of the seemingly simple binary vanadium oxide VO 2, as manifested in a pronounced metal−insulator phase transition in proximity to room temperature, have made it the subject of extensive theoretical and experimental investigations over the last several decades. We review s…
Vertically aligned few-layered graphene (FLG) nanoflakes were synthesized on bare silicon (Si) substrates by a microwave plasma enhanced chemical vapor deposition method. In situ nitrogen (N 2 ) plasma treatment was carried out using electron cyclotron resonance plasma, resulting in various nitrogen functionalities be…
We measure the dynamical arrest transition in a model, thermoreversible, adhesive hard sphere dispersion. At low volume fractions ϕ, below the critical point, gelation occurs within the gas-liquid phase boundary. For ϕ slightly below and above the critical concentration, the phase boundary follows the predicted percol…
Nanostructured mesoporous manganese oxides were easily prepared by mixing KMnO 4 with ascorbic acid in an aqueous solution under ambient conditions. The obtained manganese oxides were identified as having an α-MnO 2 tunnel structure composed of an edge-shared network of [MnO 6 ] octahedra. TEM observations revealed th…
The present work deals with the use of multiple-step procedures to obtain valuable sub-products, including nanocellulose, from rice husk. Each sub-product was characterized after every step by analyzing the chemical composition (mainly based on thermogravimetric analysis, Fourier transformed infrared spectra, and X-ra…
Many recent articles have suggested that density functional theory (DFT) with the generalized-gradient approximation does not provide the correct electronic structure for the oxides of titanium. The current opinion is that a Hubbard U correction improves the DFT results. There is no generally accepted method for decid…
Surface properties of rare-earth (RE) doped ceria (RE = Sm, Gd, Pr, and Tb) were investigated by UV (325 nm) and visible (514, 633, and 785 nm) Raman spectroscopy, combined with UV-vis diffuse reflectance spectroscopy, high-resolution transmission electron microscopy, and X-ray photoelectron spectra techniques. It was…
This paper examines the adsorption of Pb(II) and a natural organic macromolecular compound (humic acid, HA) on polyacrylamide (PAAM) -grafted multiwalled carbon nanotubes (denoted as MWCNTs/PAAM), prepared by an N(2)-plasma-induced grafting technique. The mutual effects of HA/Pb(II) on Pb(II) and HA adsorption on MWCN…
Phase-change materials (PCMs) are promising candidates for nonvolatile data storage and reconfigurable electronics, but high programming currents have presented a challenge to realize low-power operation. We controlled PCM bits with single-wall and small-diameter multi-wall carbon nanotubes. This configuration achieve…
Because of the potential applications of lanthanide-doped nanocrystals in display devices, optical communication, solid-state lasers, catalysis, and biological labeling, the controlled synthesis of these new nanomaterials has sparked considerable interest. Nanosized phosphorescent or optoelectronic devices usually exh…
ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTControlling the Synthesis and Assembly of Silver Nanostructures for Plasmonic ApplicationsMatthew Rycenga, Claire M. Cobley, Jie Zeng, Weiyang Li, Christine H. Moran, Qiang Zhang, Dong Qin, and Younan Xia*View Author Information Department of Biomedical Engineering, Washingto…
We have prepared some 3d-4f cyanide-bridged Ln(DMF) 4 (H 2 O) 3 Fe(CN) 6 H 2 O complexes (Ln = Ce, Sm, Nd, and Gd; DMF = N,N-dimethylformamide) by substituting isotopes to 2 H-substituted H 2 O and DMF and 18 O-substituted H 2 O (and normal 1 H-and 16 O-H 2 O or 1 H-DMF). We examined their crystal structures exhibitin…
The influence of a bias voltage on the surface-driven orientational transitions of liquid crystals (LCs) resulting from the weakening anchoring and anchoring transition was analysed theoretically and experimentally. The continuum theory of nematic LCs was used to model the LC deformation under different anchoring ener…
This paper presents forward and inverse analyses of the response of a compliant link actuated by a discretely attached shape memory alloy (SMA) wire subjected to a time-varying input voltage. The framework for a constrained recovery of the shape memory alloy wire is developed from a robust numerical model. The model f…