Learn More
If they could be easily exfoliated, layered materials would become a diverse source of two-dimensional crystals whose properties would be useful in applications ranging from electronics to energy storage. We show that layered compounds such as MoS(2), WS(2), MoSe(2), MoTe(2), TaSe(2), NbSe(2), NiTe(2), BN, and Bi(2)Te(3) can be efficiently dispersed in(More)
Reproduction with giant sperm occurs in distinct groups scattered over the animal kingdom. Although experiments in Drosophila assessed the influence of different selection pressures on this character, no information was available on its long-term stability. Sub-micrometer-resolution synchrotron quantitative phase tomography (holotomography) of exceptionally(More)
The T2K experiment observes indications of ν(μ) → ν(e) appearance in data accumulated with 1.43×10(20) protons on target. Six events pass all selection criteria at the far detector. In a three-flavor neutrino oscillation scenario with |Δm(23)(2)| = 2.4×10(-3)  eV(2), sin(2)2θ(23) = 1 and sin(2)2θ(13) = 0, the expected number of such events is 1.5±0.3(syst).(More)
We present the final catalogue of the 2dF QSO Redshift Survey (2QZ), based on Anglo-Australian Telescope 2dF spectroscopic observations of 44576 colour-selected (ub J r) objects with 18.25 < b J < 20.85 selected from APM scans of UK Schmidt Telescope (UKST) photographic plates. The 2QZ comprises 23338 QSOs, 12292 galactic stars (including 2071 white dwarfs)(More)
We have generated a series of composite QSO spectra using over 22000 individual low resolution (∼ 8 ˚ A) QSO spectra obtained from the 2dF (18.25 < b J < 20.85) and 6dF (16 < b J ≤ 18.25) QSO Redshift Surveys. The large size of the catalogue has enabled us to construct composite spectra in relatively narrow redshift (∆z = 0.25) and absolute magnitude (∆M B(More)
We report on measurements of the cosmological constant, Λ, and the redshift space distortion parameter β = Ω 0.6 m /b, based on an analysis of the QSO power spectrum parallel and perpendicular to the observer's line of sight, P S (k , k ⊥), from the final catalogue of the 2dF QSO Redshift Survey. We derive a joint Λ − β constraint from the geometric and(More)
We analyse the redshift-space (z-space) distortions of QSO clustering in the 2dF QSO Redshift Survey (2QZ). To interpret the z-space correlation function, ξ(σ, π), we require an accurate model for the QSO real-space correlation function, ξ(r). Although a single power-law ξ(r) ∝ r −γ model fits the projected correlation function (w p (σ)) at small scales, it(More)
We revisit the possibility that we inhabit a compact multi-connected flat, or nearly-flat, Universe. Analysis of COBE data has shown that, for such a case, the size of the fundamental domain must be a substantial fraction of the horizon size. Nevertheless, there could be several copies of the Universe within the horizon. If the Milky Way was once a quasar(More)
There is an increasing interest to develop nanoscale biocompatible graphene structures due to their desirable physicochemical properties, unlimited application opportunities and scalable production. Here we report the preparation, characterization and biocompatibility assessment of novel graphene flakes and their enabled thin films suitable for a wide range(More)