All Outputs (230)

Acousto-optical nanoscopy of buried photonic nanostructures (2017)
Journal Article

We develop a nanoscopy method with in-depth resolution for layered photonic devices. Photonics often requires tailored light field distributions for the optical modes used, and an exact knowledge of the geometry of a device is crucial to assess its p... Read More about Acousto-optical nanoscopy of buried photonic nanostructures.

On the suitability of high vacuum electrospray deposition for the fabrication of molecular electronic devices (2017)
Journal Article

© 2017 We present a series of three studies investigating the potential application of high vacuum electrospray deposition to construct molecular electronic devices. Through the use of time of flight secondary ion mass spectrometry we explore the use... Read More about On the suitability of high vacuum electrospray deposition for the fabrication of molecular electronic devices.

Enhancement of AGN in a protocluster at z=1.6 (2017)
Journal Article

We investigate the prevalence of AGN in the high-redshift protocluster Cl 0218.3–0510 at z = 1.62. Using imaging from the Chandra X-ray Telescope, we find a large overdensity of AGN in the protocluster; a factor of 23±9 times the field density of AGN... Read More about Enhancement of AGN in a protocluster at z=1.6.

Dissecting halo components in IFU data (2017)
Journal Article

While most astronomers are now familiar with tools to decompose images into multiple components such as disks, bulges, and halos, the equivalent techniques for spectral data cubes are still in their infancy. This is unfortunate, as integral field uni... Read More about Dissecting halo components in IFU data.

A consistent measure of the merger histories of massive galaxies using close-pair statistics I: Major mergers at z < 3:5 (2017)
Journal Article

We use a large sample of ?350,000 galaxies constructed by combining the UKIDSS UDS, VIDEO/CFHT-LS, UltraVISTA/COSMOS and GAMA survey regions to probe the major merging histories of massive galaxies (>1010 M?) at 0.00510?4 Mpc?3, and find rates a fact... Read More about A consistent measure of the merger histories of massive galaxies using close-pair statistics I: Major mergers at z < 3:5.

A population of faint low surface brightness galaxies in the Perseus cluster core (2017)
Journal Article

We present the detection of 89 low surface brightness (LSB), and thus low stellar density galaxy candidates in the Perseus cluster core, of the kind named ‘ultra-diffuse galaxies’, with mean effective V-band surface brightnesses 24.8-27.1 mag arcsec−... Read More about A population of faint low surface brightness galaxies in the Perseus cluster core.

Antiferromagnetic CuMnAs multi-level memory cell with microelectronic compatibility (2017)
Journal Article

Antiferromagnets offer a unique combination of properties including the radiation and magnetic field hardness, the absence of stray magnetic fields, and the spin-dynamics frequency scale in terahertz. Recent experiments have demonstrated that relativ... Read More about Antiferromagnetic CuMnAs multi-level memory cell with microelectronic compatibility.

Inertial displacement of a domain wall excited byultra-short circularly polarized laser pulses (2017)
Journal Article

Domain wall motion driven by ultra-short laser pulses is a prerequisite for envisaged low-power spintronics combining storage of information in magnetoelectronic devices with high speed and long distance transmission of information encoded in circula... Read More about Inertial displacement of a domain wall excited byultra-short circularly polarized laser pulses.

Enhanced magnetic properties of polymer-magnetic nanostructures synthesized by ultrasonication (2017)
Journal Article

Polymer based nickel (Ni) and cobalt (Co) co-doped ferrites were prepared by adept ultrasonication route. Different concentrations of polymer [polyvinyl alcohol (PVA)] (0.2 g and 0.5 g) was added as a surfactant to the magnetic particles. The phase p... Read More about Enhanced magnetic properties of polymer-magnetic nanostructures synthesized by ultrasonication.

A dissipative quantum reservoir for microwave light using a mechanical oscillator (2017)
Journal Article

Engineered dissipation can be used for quantum state preparation. This is achieved with a suitably engineered coupling to a dissipative cold reservoir usually formed by an electromagnetic mode. In the field of cavity electro- and optomechanics, the e... Read More about A dissipative quantum reservoir for microwave light using a mechanical oscillator.

The effect of the environment on the structure, morphology and star-formation history of intermediate-redshift galaxies (2017)
Journal Article

With the aim of understanding the effect of the environment on the star formation history and morphological transformation of galaxies, we present a detailed analysis of the colour, morphology and internal structure of cluster and field galaxies at 0... Read More about The effect of the environment on the structure, morphology and star-formation history of intermediate-redshift galaxies.

Experimental Determination of Dynamical Lee-Yang Zeros (2017)
Journal Article

Statistical physics provides the concepts and methods to explain the phase behavior of interacting many-body systems. Investigations of Lee-Yang zeros - complex singularities of the free energy in systems of finite size - have led to a unified unders... Read More about Experimental Determination of Dynamical Lee-Yang Zeros.

Current and future magnetic resonance technologies for assessing liver disease in clinical and experimental medicine (2017)
Journal Article

Background: In the past decades, a number of non-invasive methods have emerged for detecting and estimating liver fibrosis; these include both serum-based panels and imaging-based technology. Some of these methods are now being incorporated in clinic... Read More about Current and future magnetic resonance technologies for assessing liver disease in clinical and experimental medicine.

The LOFAR window on star-forming galaxies and AGNs – curved radio SEDs and IR–radio correlation at 0 (2017)
Journal Article

We present a study of the low-frequency radio properties of star-forming (SF) galaxies and active galactic nuclei (AGNs) up to redshift z = 2.5. The new spectral window probed by the Low Frequency Array (LOFAR) allows us to reconstruct the radio cont... Read More about The LOFAR window on star-forming galaxies and AGNs – curved radio SEDs and IR–radio correlation at 0.

Galaxy Zoo: finding offset discs and bars in SDSS galaxies (2017)
Journal Article

We use multiwavelength Sloan Digital Sky Survey (SDSS) images and Galaxy Zoo morphologies to identify a sample of ∼270 late-type galaxies with an off-centre bar. We measure offsets in the range 0.2–2.5 kpc between the photometric centres of the stell... Read More about Galaxy Zoo: finding offset discs and bars in SDSS galaxies.

Microwave Generation in Synchronized Semiconductor Superlattices (2017)
Journal Article

We study high-frequency generation in a system of electromagnetically coupled semiconductor superlattices fabricated on the same doped substrate. Applying a bias voltage to a single superlattice generates high-frequency current oscillations. We demon... Read More about Microwave Generation in Synchronized Semiconductor Superlattices.

Molecular beam epitaxy as a growth technique for achieving free-standing zinc-blende GaN and wurtzite AlxGa1-xN (2017)
Journal Article

Currently there is a high level of interest in the development of ultraviolet (UV) light sources for solid state lighting, optical sensors, surface decontamination and water purification. III-V semiconductor UV LEDs are now successfully manufactured... Read More about Molecular beam epitaxy as a growth technique for achieving free-standing zinc-blende GaN and wurtzite AlxGa1-xN.

The effect of dynamical compressive and shear strain on magnetic anisotropy in a low symmetry ferromagnetic film (2017)
Journal Article

Dynamical strain generated upon excitation of a metallic film by a femtosecond laser pulse may become a versatile tool enabling control of magnetic state of thin _lms and nanostructures via inverse magnetostriction on a picosecond time scale. Here we... Read More about The effect of dynamical compressive and shear strain on magnetic anisotropy in a low symmetry ferromagnetic film.

Assessment of motion of colonic contents in the human colon using MRI tagging (2017)
Journal Article

Background We have previously reported a non-invasive, semi-automated technique to assess motility of the wall of the ascending colon (AC) using Magnetic Resonance Imaging. This study investigated the feasibility of using a tagged MRI technique to vi... Read More about Assessment of motion of colonic contents in the human colon using MRI tagging.

Galaxy Zoo: the interplay of quenching mechanisms in the group environment (2017)
Journal Article

Does the environment of a galaxy directly influence the quenching history of a galaxy? Here, we investigate the detailed morphological structures and star formation histories of a sample of SDSS group galaxies with both classifications from Galaxy Zo... Read More about Galaxy Zoo: the interplay of quenching mechanisms in the group environment.