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Now showing items 1651-1660 of 2111
Adhesion interaction between atomically defined tip and sample
(American Physical Society, 1998)
We have measured forces between an atomically defined W(111) tip and an Au(111) sample in ultrahigh vacuum at 150 K. The W tips are manipulated and characterized on an atomic scale both before and after sample approach by ...
Quasi-Periodic Pulsations in Solar Flares and the Earth's Ionosphere
(Trinity College Dublin. School of Physics. Discipline of Physics, 2019)
Solar flares are the most powerful and energetic physical phenomena in our solar system, releasing radiation across the whole electromagnetic spectrum with total energies reaching on the order of 10^25 in a matter of ...
Optimisation of Electrolytically-gated Thin Film Transistors made from Printed Nanosheet Networks
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)
Networks of two-dimensional nanosheets show great potential in a wide variety of
different applications, with particular focus on the area of printed electronics. One
of the main issues facing such nanosheet network ...
Mechanical properties of biopolymers reinforced with carbon nanotubes
(Trinity College (Dublin, Ireland). School of Physics, 2008)
Three biopolymers; poly(methyl methacrylate) (PMMA); poly(L-lactic acid) (PLLA);
poly(vinyl alcohol) (PVA) and an engineered spider silk (Biosteel ®) have been independently
doped with carbon nanotubes. PM MA was functionalised ...
Bose condensation in a model microcavity
(2000)
We study the equilibrium properties of a system of dipole-active excitons coupled to a single photon mode at fixed total excitation. Treating the presence or absence of a trapped exciton as a two-level system produces a ...
Progress towards spin-polarized scanning tunneling microscopy
(1992)
Solutions to the main problems in operating a spin?polarized scanning tunneling microscope are discussed. Preliminary experimental results obtained in the course of implementing these solutions are reported. Atomic resolution ...
Theory of induced magnetic moments and x-ray magnetic circular dichroism in Co-Pt multilayers
(American Physical Society, 2002)
For Co-Pt multilayers, the magnetic moments of the Pt atoms and the x-ray magnetic circular dichroism (XMCD) spectra at the L2 and L3 edge of Pt are calculated-by the ab initio density-functional electron theory. The ...
Mode referencing of an external cavity diode laser for continuous frequency stabilization
(2008)
The output of an external cavity diode laser (ECDL) is frequency stabilized to a water (H2O) vapor absorption line at 935 nm using wavelength modulation spectroscopy (WMS) by means of a dual-feedback locking loop. A novel ...
Far ultraviolet spectroscopic explorer observations of the symbiotic star AG Draconis
(American Astronomical Society, 2005)
Spectra of the bright symbiotic star AG Draconis (BD +67?922) in the wavelength range 905-1187 ? obtained with the Far Ultraviolet Spectroscopic Explorer (FUSE) are presented. The spectra show a number of narrow, nebular ...