Materials Literature
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Plasmonic imaging under a dark-field microscope (DFM) holds great promise for single-particle analysis in bioimaging, nanophotonics, and nanocatalysis. Here, we designed a DNA-directed programmable assembly strategy to fabricate a halo-like Au nanostructure (nanohalo) that couples plasmonic large gold nanoparticles (L…
We propose a wide-angle, polarization-independent and dual-band infrared perfect metamaterial absorber made of double L-shaped gold patches on a dielectric spacer and opaque gold ground layer. Numerical and experimental results demonstrate that the absorber has two near-unity absorption peaks, which are result from ma…
The layered structure of molybdenum disulfide (MoS2 ) is structurally similar to that of graphite, with individual sheets strongly covalently bonded within but held together through weak van der Waals interactions. This results in two distinct surfaces of MoS2 : basal and edge planes. The edge plane was theoretically…
The average and local structure of the oxides Ba2SiO4, BaAl2O4, SrAl2O4, and Y2SiO5 are examined to evaluate crystal rigidity in light of recent studies suggesting that highly connected and rigid structures yield the best phosphor hosts. Simultaneous momentum-space refinements of synchrotron X-ray and neutron scatteri…
We have investigated the structure, adsorption energy, growth mode, diffusion barrier, magnetic property, dipole moment, and work function of Li, Na, Mg, Al, Cr, Fe, Co, Ni, Mo, Pd, Pt, and Au adsorption on phosphorene using first-principles density-functional theory. We have found that all the adatoms favor the hollo…
Many biological structures, from macromolecules to proteins, as well as a number of solid-state systems including ferroelectric and ferro nano- and microstructures, possess static toroidal shapes. A theoretical study shows that the dynamic toroidal dipoles constructed from ionic crystals can be used to engineer metama…
Electrical tuning of selective reflection of light is achieved in a very broad spectral range from ultraviolet to visible and infrared by an oblique helicoidal state of a cholesteric liquid crystal in a wide temperature range (including room temperature). The phenomenon offers potential applications in tunable smart w…
We have identified excited exciton states in monolayers of MoS2 and WS2 supported on fused silica by means of photoluminescence excitation spectroscopy. In monolayer WS2, the positions of the excited A exciton states imply an exciton binding energy of 0.32 eV. In monolayer MoS2, excited exciton transitions are observe…
Tear resistance is of vital importance in the various functions of skin, especially protection from predatorial attack. Here, we mechanistically quantify the extreme tear resistance of skin and identify the underlying structural features, which lead to its sophisticated failure mechanisms. We explain why it is virtual…
One hundred years after its first successful synthesis in the bulk form in 1914, black phosphorus (black P) was recently rediscovered from the perspective of a 2D layered material, attracting tremendous interest from condensed matter physicists, chemists, semiconductor device engineers, and material scientists. Simila…
The thermally stimulated photoinduced in-plane and out-of-plane molecular reorientation behaviors of a polymethacrylate film comprised of 4-methoxycinnnamoylbiphenyl (MCB) side groups connected with a decylene spacer (PMCB10M) are compared in the bulk (>10 nm), at the inner-surface (∼10 nm), and at the near-surface (<…
We presented a systematic study on the transport properties of the La0.67A0.33MnO3 (LAMO) (A = Ba, Ca) and La0.67Ca0.33MnO3/LaMnO3 (LCMO/LMO) films with the LAMO layer of the thickness from 0 to 50 nm and a fixed LMO thickness of 3 nm. An interface layer with degenerated magnetic and conductive properties has been obs…
This research aims to innovate a new fabric structure, which could be used as a bed cover based on double honeycomb fabric with self-stitching. The honeycomb air pockets were aimed at facing each other to form closed small air chambers which work to sequester the air. The double fabric increases fabric thickness. Thus…
Crickets, locusts, bats, and many other animals detect changes in their environment with distributed arrays of flow-sensitive hairs. Here we discuss the fabrication and characterization of a relatively new class of pore-based, artificial hair sensors that take advantage of the mechanical properties of structural micro…
ABSTRACT A series polymers of the poly(4‐{[bis(2‐hydroxyethyl)amino]methyl}‐2‐oxo‐2 H ‐chromen‐7‐yl‐2‐methylpropanoate), P(CIMMAOC)‐DEA, were synthesized by modification of poly(4‐(chloromethyl)‐2‐oxo‐2 H ‐chromen‐7‐yl‐2‐ethylpropanoate), P(CIMMAOC), with diethanolamine (DEA). All polymers were structurally characteri…
A single-crystal gallium oxide (β-Ga 2 O 3 ) has been investigated for biosensing applications in the form of an electrolyte/oxide diode. β-Ga 2 O 3 , a transparent conducting oxide, has great potential to be used in upcoming bioelectronics technologies such as integrated biosensors. The surface of a β-Ga 2 O 3 substr…
We report a naked eye refractive index sensor with a visible metamaterial absorber. The visible metamaterial absorber consisting of a silver dendritic/dielectric/metal structure shows multiple absorption peaks. By incorporating a gain material (rhodamine B) into the dielectric layer, the maximal magnitude of the absor…
To date, many potent metal-based anticancer drugs have been developed and many drug delivery systems have been exploited to improve the targeting and decrease the side effects of anticancer drugs. Human serum albumin (HSA) binding contributes significantly to the discovery of new drug candidates because binding of dru…
A high transmittance polymer-stabilised blue-phase liquid crystal display with improved protrusion electrodes is proposed. We add a small in-plane switching electrode on the top of each protrusion electrode in order to create the fringe fields above the protrusion electrodes. These fields contribute to decrease dead z…
The [M(NO)n](+) cation complexes (M = Au and Ag) are studied for exploring the coordination and bonding between nitric oxide and noble metal cations. These species are produced in a laser vaporization supersonic ion source and probed by infrared photodissociation spectroscopy in the NO stretching frequency region usin…