Few-layer V(2)O(5) nanosheets with a thickness of 2.1-3.8 nm have been successfully synthesized in this work via a simple and scalable liquid exfoliation technique. The unique nanostructure allows the high-rate transportation of lithium ions and electrons due to very short diffusion paths provided by this ultrathin thickness, resulting in Li-ion cathodes with remarkable energy and power densities.

Accurate analytical expressions for the state densities of liquid 4He droplets are derived, incorporating the ripplon and phonon degrees of freedom. The microcanonical temperature and the ripplon angular momentum level density are also evaluated. The approach is based on inversions and systematic expansions of canonical thermodynamic properties.

Yarn supercapacitors have great potential in future portable and wearable electronics because of their tiny volume, flexibility and weavability. However, low-energy density limits their development in the area of wearable high-energy density devices. How to enhance their energy densities while retaining their high-power densities is a critical challenge for yarn supercapacitor development. Here...

Assuming a simple spherical relativistic mean eld model of the nucleus, we estimate the width of the antiproton{neutron annihilation ( n) and the width of antiproton{proton ( p) annihilation, in an antiprotonic atom system. This allows us to determine the halo factor f , which is then discussed in the context of experimental data obtained in measurements recently done on LEAR utility at CERN. A...

A new relativistic mean-…eld model, which reproduces the astronomical observations of neutron stars and the experimental nuclear symmetry energy, is applied to warm nuclear matter. We con…rm that the model also reproduces the critical temperature and the caloric curve in the liquid-gas phase transition of nuclear matter. The recent great experimental progress [1-4] in nuclear multifragmentation...

We report results of diffusion Monte Carlo calculations for both 4 He absorbed in a narrow single walled carbon nanotube (R = 3.42Å) and strictly one dimensional 4 He. Inside the tube, the binding energy of liquid 4 He is approximately three times larger than on planar graphite. At low linear densities , 4 He in a nanotube is an experimental realization of a one-dimensional quantum fluid. Howev...

Path-integral Monte Carlo simulations have been used to determine the phase diagram of a two-dimensional He film in a range of temperatures and coverages where it undergoes solidification, superfluidity, and a liquid-gas transition (0.25 K<T<1.5 K 0,s,0.094 Å). We determine the phase-transition densities and give the coefficients for a functional form of the free energy in the liquid, solid, an...

The three dimensional Ising model in cylindrical geometry can be regarded as a model system for the study of nanopores. As a quasi one dimensional system, it also exhibits a rather interesting “phase behavior”: At low temperatures, the tube is either filled with liquid or gas and the densities are similar to those in the bulk. When we approach a “pseudo-critical point” (below the critical point...

Evidence of a liquid-liquid equilibrium in simple fluids has recently been exposed for a density-dependent pair potential in the framework of a van der Waals theory. Here this double criticality is investigated by means of computer simulation, a perturbation theory, and integral equation theory. It is found that the critical point estimated from the integral equation thermodynamics is not assoc...