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Template-Stripped Tunable Plasmonic Devices on Stretchable and Rollable Substrates
(2015)ACS NanoWe use template stripping to integrate metallic nanostructures onto flexible, stretchable, and rollable substrates. Using this approach, high-quality patterned metals that are replicated from reusable silicon templates can be directly transferred to polydimethylsiloxane (PDMS) substrates. First we produce stretchable gold nanohole arrays and show that their optical transmission spectra can be modulated by mechanical stretching. Next we ...Journal Article -
Iterative Learning Control for the Radio Frequency Subsystems of a Free-Electron Laser
(2018)IEEE Transactions on Control Systems TechnologyIn linear particle accelerators used for free electron lasers, it is often required that the electron bunches experience the same electric field as they pass through the accelerating structures. For radio frequency (RF) pulsed mode machines, like the SwissFEL, this means that the amplitude and phase of the radio frequency pulses feeding the structures through the waveguides should be kept constant over the pulse length. This raises an ...Journal Article -
On the existence of infinitely many invariant Reeb orbits
(2016)Mathematische ZeitschriftJournal Article -
Ultrafast Yb:YAG laser oscillator with gigahertz repetition rate
(2023)Optics ExpressWe present a SESAM modelocked Yb:YAG solid-state laser providing low-noise narrowband pulses with a pulse duration of 606 fs at a 1.09-GHz repetition rate, delivering up to 2.5 W of average output power. This laser provides access to a new parameter space that could previously not be reached by solid-state lasers and, to the best of our knowledge, is the first modelocked solid-state Yb:YAG laser in the gigahertz regime. This is achieved ...Journal Article -
Ground Response to Tunnel Re-profiling Under Heavily Squeezing Conditions
(2016)Rock Mechanics and Rock EngineeringThis paper presents a finite strain theoretical analysis of the ground response around highly deformed circular tunnel cross sections that are subjected to (repeated) re-profiling in order to re-establish the desired clearance. Plane strain axially symmetric conditions are considered, with linearly elastic, perfectly or brittle plastic rock behaviour according to the non-associated Mohr–Coulomb model. On the basis of this theoretical ...Journal Article -
High-Temperature In situ Deformation of GaAs Micro-pillars: Lithography Versus FIB Machining
(2016)JOMThe plasticity of silicon-doped GaAs was investigated between 25°C and 400°C using microcompression to prevent premature failure by cracking. Micropillars with diameters of ~2.5 μm were fabricated on a ⟨100⟩-oriented GaAs single crystal by means of both conventional lithographic etching techniques and focused ion beam machining and then compressed in situ in the scanning electron microscope (SEM). A transition in deformation mechanisms ...Journal Article -
Compact Plasmonic Distributed-Feedback Lasers as Dark Sources of Surface Plasmon Polaritons
(2021)ACS NanoPlasmonic modes in optical cavities can be amplified through stimulated emission. Using this effect, plasmonic lasers can potentially provide chip-integrated sources of coherent surface plasmon polaritons (SPPs). However, while plasmonic lasers have been experimentally demonstrated, they have not generated propagating plasmons as their primary output signal. Instead, plasmonic lasers typically involve significant emission of free-space ...Journal Article -
New extended thin-sheet approximation for geodynamic applications—II. Two-dimensional examples
(1999)Gheophysical Journal InternationalJournal Article -
Impact of Pseudomonas fluorescens strain CHA0 and a derivative with improved biocontrol activity on the culturable resident bacterial community on cucumber roots
(1998)FEMS Microbiology EcologyJournal Article -
Sulfate-reducing bacterial community response to carbon source amendments in contaminated aquifer microcosms
(2002)FEMS Microbiology EcologyJournal Article