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Substrate scratches can limit the laser resistance of multilayer mirror coatings on high-peak-power laser systems. To date, the mechanism by which substrate surface defects affect the performance of coating layers under high power laser irradiation is not well defined. In this study, we combine experimental approaches with theoretical simulations to delineate the correlation between laser damag...

We report the observation of nuclear resonant diffraction of synchrotron radiation by a synthetic multilayer. The nuclear period of the [57Fe(22&/Sc( 1 lA]/Fe(228i)/Sc(l l&l x 25 multilayer was chosen~ to be twice the electronic period to obtain a pure nuclear Bragg reflection. Strong enhancement of the radiative scattering channel provided a fast time response for the 57Fe resonant scattering ...

We present the design, fabrication process and characterization of multilayer miniaturized polydimethylsiloxane (PDMS)-based dielectric elastomer diaphragm actuators. The conductive stretchable electrodes are obtained by lowenergy metal ion implantation. To increase force, decrease the required voltage, and avoid dielectric breakdown, we present here a technique to fabricate multilayer devices ...

Large area Multilayer Dielectric (MLD) diffraction gratings are essential components for temporal pulse compression in high energy laser systems. MLD grating designs typically consist of a silica grating layer on top of a dielectric multilayer reflector. A reactive ion beam etching (RIBE) process using a gridded radio frequency (RF) ion source was developed to uniformly etch the silica grating ...

Finite-element analysis is used to study the thermal deformation of a multilayer mirror due heat load from undulator beam at low-emittance synchrotron source, specifically ESRF-EBS upgrade beamline EBSL-2. The energy bandwidth double-multilayer monochromator larger than that relevant harmonic, such considerable portion reflected. Consequently, absorbed power non-uniformly distributed on surface...

Submitted: Jul 16, 2013; Accepted: Aug 25, 2013; Published: Aug 29, 2013 Abstract: Due to the sensibility of neutron spin to the intrinsic magnetic field of magnetic materials, polarized neutron reflectometry is widely used in investigation of magnetic properties of nano-structures. Type and thickness of a multilayer can precisely be determined by measuring the polarization of reflected neutron...

Nanoscale multilayer nitride coatings deposited by advanced PVD techniques have shown particular promise in improving the tribological properties of a number of modal alloy steels [1]. In this study, we report the effect of temperature on the friction and wear behaviour of a CrAlYN/CrN multilayer coating with a CrAlYON/CrON topcoat deposited on γ-TiAl. Deposition was performed by unbalanced mag...

The geometric challenges in the architectural design of freeform shapes come mainly from the physical realization of beams and nodes in singleand multilayer constructions. The present paper approaches arising geometric problems via the concept of parallel meshes. It presents results which form the basis for computation and optimization. We discuss planar faces, beams of controlled height, geome...

LaF3/SrF2 multilayer heterostructures with thicknesses of individual layers in the range 5-100 nm have been grown on MgO(100) substrates using molecular beam epitaxy. The longitudinal conductivity of the films has been measured using impedance spectroscopy in the frequency range 10-1-106 Hz and a temperature range 300-570 K. The ionic DC conductivities have been determined from Nyquist impedanc...