A5101531822- Photonic and Optical Devices
- Advanced Fiber Optic Sensors
- Advanced Fiber Laser Technologies
- Mechanical and Optical Resonators
- Solid State Laser Technologies
- Photonic Crystals and Applications
- Magnetic Field Sensors Techniques
- Integrated Circuits and Semiconductor Failure Analysis
- Thermal Analysis in Power Transmission
- Acoustic Wave Resonator Technologies
- Coal and Its By-products
- Geotechnical Engineering and Underground Structures
- Diamond and Carbon-based Materials Research
- Smart Grid Energy Management
- Semiconductor Lasers and Optical Devices
- Microgrid Control and Optimization
- Integrated Energy Systems Optimization
- Marine and Offshore Engineering Studies
- Nuclear Engineering Thermal-Hydraulics
- Combustion and Detonation Processes
- Aerogels and thermal insulation
- Metal and Thin Film Mechanics
- Business Law and Ethics
- Force Microscopy Techniques and Applications
- Ship Hydrodynamics and Maneuverability
Torch Technologies (United States)
2020
Okinawa Institute of Science and Technology Graduate University
2016
Humboldt-Universität zu Berlin
2011-2013
University College Cork
2011-2013
Commonwealth Scientific and Industrial Research Organisation
2013
Munster Technological University
2007-2009
International Energy Research Centre
2007-2009
National Physical Laboratory
1977
Central Electricity Generating Board
1955
Multi-energy systems (MES) are attracting increasing attention driven by its potential to offer significant flexibility in future smart grids. At the residential level, roll-out of meters and rapid deployment energy devices call for autonomous multi-energy management which can exploit real-time information optimally schedule usage different with aim minimizing end-users' costs. This paper proposes a novel strategy MES using model-free deep reinforcement learning (DRL) based approach,...
Aerostatic tuning of whispering gallery modes (WGMs) in a microbubble resonator is demonstrated. The optical are redshifted over hundreds gigahertz (GHz) simply by increasing the air pressure (up to 6 bars) inside microbubble. A description properties WGMs microbubbles given terms corresponding elasto-optical equations spherical shells and results compared experimental data. Microbubbles as small 74 μm tested show excellent agreement with theory. An estimation method developed for...
An improved method for manufacturing free-standing fine-wire grids is described. Measurements of the power reflectivity and transmissivity several at millimeter submillimeter wavelengths are presented, some possible uses briefly discussed.
We fine-tune large language models to write natural critiques (natural critical comments) using behavioral cloning. On a topic-based summarization task, written by our help humans find flaws in summaries that they would have otherwise missed. Our naturally occurring both model and human summaries, intentional be deliberately misleading. study scaling properties of critiquing with synthetic tasks. Larger more helpful critiques, on most tasks, are better at self-critiquing, despite having...
A hollow bottle-like microresonator (BLMR) with ultra-high quality factor is fabricated from a microcapillary nearly parabolic profile. At 1.55 $\mu m$ pumping, degenerate four-wave mixing can be observed for BLMR of diameter 102 $\mu$m. The profile the guarantees zero waveguide dispersion, which theoretically discussed in detail. From simulation, at $\mu$m wavelength such BLMR, fundamental bottle mode anomalous dispersion regime, whilst ordinary whispering gallery (WGM) confined center...
We investigate an efficient method for fine-tuning whispering gallery mode resonances in disk-type silica microresonators to reach arbitrary frequency within the free spectral range of system. This is based on a post-production hydrofluoric acid etching process precisely resize radius such microresonators. show effectiveness this approach by tuning their resonance 10 GHz specific hydrogen cyanide reference lines (P16, P18). technique allows simple and exact matching narrow-linewidth lasers...
We present results on the realization of a multicolour microspherical glass light source fabricated from erbium doped fluoride ZBLALiP. Whispering gallery mode lasing and upconversion processes give rise to laser fluorescent emissions at multiple wavelengths ultraviolet infrared. Thirteen discrete ranging 320 849 nm have been observed in spectrum. A Judd-Ofelt analysis was performed calculate radiative properties Er3+:ZBLALiP microspheres, including transition probabilities, electric dipole...
The paper describes the experiments carried out during last 20 years on corrosion of steel-cored-aluminium overhead-line conductors Grid system. It is found that average rate deterioration, based reduction in mechanical strength, 0.4–0.5% per year, and service life conductor 25–30 years. deterioration varies greatly different localities, extreme values for being from 3 to, say, 50 years.The mechanism described, it shown there are two types corrosion, one associated with industrial districts...
The effect of electron beam induced carbon contamination on the corrosion behavior aluminum alloy 2024-T3 (AA2024-T3) has been investigated using immersion and polarization-type tests. For test, was deposited a polished surface AA2024‑T3 in form concentric squares increasing thickness toward center. sample then corroded 0.1 M NaCl for 80 hrs at room temperature subsequently examined scanning microscope (SEM) to determine how matrix intermetallic phases behaved under layer. Results indicated...
The problem of real-time autonomous energy management is an application area that receiving unprecedented attention from consumers, governments, academia, and industry. This paper showcases the first deep reinforcement learning (DRL) to for a multi-carrier system. proposed approach tailored align with nature by posing it in multi-dimensional continuous state action spaces, order coordinate power flows between different devices, adequately capture synergistic effect couplings carriers....
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> We present results on the realization of an all-taper coupled, multicolor microspherical light source fabricated from erbium-doped fluoride glass ZBLALiP. Whispering gallery mode lasing at 1555 nm and fluorescent emissions ultraviolet to infrared (IR) have been observed. A tapered fiber is used launch 980-nm pump into microresonator cavity collect resulting IR lasing. separate, half-taper...
We present a method for fabricating single-input optical microbubble resonators with diameters less than 100 μm. observe mode shift up to 22 GHz in the spectra when water is inserted into cavity.
A recent advance in the study of emergent magnetic monopoles was discovery that monopole motion is restricted to dynamical fractal trajectories (J. Hall\'en et al, Science 378, 1218 (2022)) thus explaining characteristics noise spectra (Dusad, R. al. Nature 571, 234 (2019); Samarakoon, A. M. Proc. Natl. Acad. Sci. 119, e2117453119 (2022)). Here we apply this new theory explore dynamics field-driven currents, finding them comprised two quite distinct transport processes: initially swift...
We have devised, implemented and demonstrated new scanning technology, smoother algorithms a capability to read selectable sub-sections of memory devices in order accelerate laser SEE testing address descrambling for interpreting MCU's burst errors.
We present results on the realization of an all-taper-coupled, microspherical light source fabricated from erbium-doped fluoride glass ZBLALiP. observe whispering gallery mode lasing at 1.55 mum, in addition to upconversion processes which give rise fluorescent emissions multiple wavelengths ultraviolet infrared. A single-mode, tapered fibre coupling scheme -which serves both launch pump 980 nm into microresonator cavity and collect resulting infrared -is employed. demonstrate use a second,...
We describe a novel method for making microbottle-shaped lasers by using CO$_2$ laser to melt Er:Yb glass onto silica microcapillaries or fibres. This is realised the fact that two glasses have different melting points. The power controlled flow doped around cylinder. In case of capillary, resulting geometry hollow, resonator. simple fabricating number WGM with wide range sizes on single, micron-scale structure. outer layer pumped at 980 nm via tapered optical fibre and whispering gallery...
2 THz tuning of optical WGMs is observed in a stretchable PDMS microresonator, demonstrating sensitivities as high 0.13 nm/μN. The structure also provides the possibility observing mechanical modes with frequencies kHz range.
We present a method for tuning whispering gallery modes in microspheres and demonstrate to the cooling transition of 85Rb. The can be used UHV is interest cavity QED experiments.
We have devised, implemented and demonstrated new scanning technology, smoother (uninterrupted) algorithms a capability to read selectable sub-sections of memory devices in order accelerate laser SEE testing address descrambling for interpreting MCU's burst errors.