Search Results - "Jardine, P. A."

Unlocking new contrast in a scanning helium microscope by Barr, M., Fahy, A., Martens, J., Jardine, A. P., Ward, D. J., Ellis, J., Allison, W., Dastoor, P. C.

“…Delicate structures (such as biological samples, organic films for polymer electronics and adsorbate layers) suffer degradation under the energetic probes of…”
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Measurement of single-molecule frictional dissipation in a prototypical nanoscale system by Hedgeland, H, Fouquet, P, Jardine, A. P, Alexandrowicz, G, Allison, W, Ellis, J

“…Fast-moving nanoscale systems offer the tantalizing possibility for rapid processing of materials, energy or information. Frictional forces can easily dominate…”
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How Atomic Steps Modify Diffusion and Inter-adsorbate Forces: Empirical Evidence from Hopping Dynamics in Na/Cu(115) by Godsi, O, Corem, G, Kravchuk, T, Bertram, C, Morgenstern, K, Hedgeland, H, Jardine, A. P, Allison, W, Ellis, J, Alexandrowicz, G

“…We followed the collective atomic-scale motion of Na atoms on a vicinal Cu(115) surface within a time scale of pico- to nanoseconds using helium spin echo…”
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Determination of the quantum contribution to the activated motion of hydrogen on a metal surface: H/Pt(111) by Jardine, A P, Lee, E Y M, Ward, D J, Alexandrowicz, G, Hedgeland, H, Allison, W, Ellis, J, Pollak, E

“…Measurements of the atomic-scale motion of H and D atoms on the Pt(111) surface, above the crossover temperature to deep tunneling, are presented. The results…”
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Highly Proton-Ordered Water Structures on Oxygen Precovered Ru{0001} by Avidor, N, Hedgeland, H, Held, G, Jardine, A. P, Allison, W, Ellis, J, Kravchuk, T, Alexandrowicz, G

“…We present helium scattering measurements of a water ad-layer grown on a O(2 × 1)/Ru(0001) surface. The adsorbed water layer results in a well ordered helium…”
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The significance of grain morphology and moisture content on the response of silica sand to ballistic penetration by Perry, J. I., Braithwaite, C. H., Taylor, N. E., Jardine, A. P.

“…The dynamic response of sand is of interest for a wide range of applications, from civil engineering to asteroid impact, in addition to defense and industrial…”
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A method for constrained optimisation of the design of a scanning helium microscope by Bergin, M., Ward, D.J., Ellis, J., Jardine, A.P.

“…•Optimal design of a scanning helium microscope obtained through a constrained optimisation.•Model for the intensity includes both the source and atom…”
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Observation of diffraction contrast in scanning helium microscopy by Bergin, M., Lambrick, S. M., Sleath, H., Ward, D. J., Ellis, J., Jardine, A. P.

“…Scanning helium microscopy is an emerging form of microscopy using thermal energy neutral helium atoms as the probe particle. The very low energy combined with…”
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Multiple scattering in scanning helium microscopy by Lambrick, S. M., Vozdecký, L., Bergin, M., Halpin, J. E., MacLaren, D. A., Dastoor, P. C., Przyborski, S. A., Jardine, A. P., Ward, D. J.

“…Using atom beams to image the surface of samples in real space is an emerging technique that delivers unique contrast from delicate samples. Here, we explore…”
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Characterisation of high rate plasticity in the uniaxial deformation of high purity copper at elevated temperatures by Lea, L.J., Jardine, A.P.

“…In uni-axial compression at strain rates above 104 s−1, FCC metals exhibit a rapid increase in strength. Mechanisms proposed to be responsible for this…”
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Behaviour of moist and saturated sand during shock and release by Perry, J. I., Braithwaite, C. H., Taylor, N. E., Jardine, A. P.

“…Relatively little is known about the changes that occur in the shock compaction and release of granular matter with varying levels of moisture. Here, we report…”
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A ray tracing method for predicting contrast in neutral atom beam imaging by Lambrick, S.M., Bergin, M., Jardine, A.P., Ward, D.J.

“…•Ray tracing is used to predict contrast in neutral atom beam imaging.•Diffuse contrast in helium atom imaging is successfully predicted.•Masking and diffuse…”
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Helium-3 spin-echo: Principles and application to dynamics at surfaces by Jardine, A.P., Hedgeland, H., Alexandrowicz, G., Allison, W., Ellis, J.

“…In this review we give a detailed description of the recently developed helium-3 spin-echo technique and its application to several classes of surface dynamic…”
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The significance of grain morphology, moisture, and strain rate on the rapid compaction of silica sands by Perry, J. I., Braithwaite, C. H., Taylor, N. E., Pullen, A. D., Jardine, A. P.

“…There is considerable interest in the high-rate compaction of brittle granular materials such as sand. However, the vast majority of studies focus on a single…”
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Behaviour of sand during release from a shocked state by Braithwaite, C. H., Perry, J. I., Taylor, N. E., Jardine, A. P.

“…The dynamic response of granular materials to an applied shockwave is of wide ranging importance. While the shock Hugoniot has been studied, the shock-release…”
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Structural Evolution of a Cyclooctatetraene Adlayer on Cu(111) during Isothermal Desorption by Lau, J. A, Calvo-Almazán, I, Townsend, P. S. M, Ward, D. J, Jardine, A. P, Allison, W, Ellis, J, Hinch, B. J, Avidor, N

“…The use of helium diffraction patterns to study desorption processes is explored as a novel extension to traditional methods based on helium specular…”
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Ultra-high precision determination of site energy differences using a Bayesian method by Lechner, B. A. J., Kole, P. R., Hedgeland, H., Jardine, A. P., Allison, W., Hinch, B. J., Ellis, J.

“…Accurate experimental data of adsorbate potential energy landscapes are crucial as benchmarks for the evaluation of first-principles calculations. Here, we…”
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Observation of grain size limited dynamic failure in a typical granite by Kirk, S.S., Braithwaite, C.H., Jardine, A.P., Williamson, D.M.

“…Understanding the dynamic fragmentation of geological materials is important to many fields, but is particularly significant for mining. Here, a series of…”
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Rotation and translational motion prior to self-assembly: dynamics of ethanethiolate on Cu(111) by Paterson, S, Allison, W, Hedgeland, H, Ellis, J, Jardine, A P

“…We investigate the dynamics of low-coverage ethanethiolate on Cu(111) using helium spin-echo spectroscopy. Above 210 K, the measurements are dominated by…”
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Electronic Structure and Bonding of an Ionic Molecular Adsorbate: c-C5H5 on Cu{111} by Sacchi, M, Jenkins, S. J, Hedgeland, H, Jardine, A. P, Hinch, B. J

“…Self-assembled monolayers containing conjugated π systems find application in organic electronics to functionalize and modify the electronic properties of…”
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