We study the thermo-optic coefficient of silicon carbide with different silicon content. We demonstrate a clear trend between the silicon content and the thermo-optic coefficient which measured as high as 1.88×10...
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Researches have investigated the formation, transportation and spreading of bubble on solid surface with specific wettability. However, bubble transfer on wettability-heterogeneous surfaces has been rarely reported, w...
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Researches have investigated the formation, transportation and spreading of bubble on solid surface with specific wettability. However, bubble transfer on wettability-heterogeneous surfaces has been rarely reported, which also plays significant role in water electrolysis, heat transfer, micro-bubble collection, *** this work, we carefully investigate the behavior of bubble transfer from the aerophobic or aerophilic region to the superaerophilic region through fabricating the wettability-heterogenous surfaces. Surface energy was elucidated to be transformed to the kinetic energy during bubble transfer process. Theoretical analysis on the average velocity of bubble transfer was consistent with the experimental *** influence of wettability of solid substrate, bubble volume and superaerophilic stripe width on bubble transfer are carefully investigated. Moreover, wettability-heterogeneous surfaces were explored to be applied in micro-CO_(2) bubble collection and H_(2) bubble removement in water splitting.
We study the optical generation and control of coherent phonons in elemental bismuth (Bi) and antimony (Sb) using a classical equation of motion informed by first-principles calculations of the potential energy surfac...
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We study the optical generation and control of coherent phonons in elemental bismuth (Bi) and antimony (Sb) using a classical equation of motion informed by first-principles calculations of the potential energy surface and the frequency-dependent macroscopic dielectric function along the zone-centered optical phonon coordinates. Using this approach, we demonstrate that phonons with the largest optomechanical couplings also have the strongest degree of anharmonicity among the zone-centered modes, a result of the broken-symmetry structural ground state of Bi and Sb. We show how this anharmonicity, explaining the light-induced phonon softening observed in experiments, prevents the application of standard phonon-amplification and annihilation protocols. We introduce a simple linearization protocol that extends the use of such protocols to the case of anharmonic phonons in broken-symmetry materials, and demonstrate its efficiency at high displacement amplitudes. Our formalism and results provide a path for improving optical control in nonlinear phononics.
Heat generation during the operation of lasers and amplifiers negatively affects a wide range of performance and packaging considerations. Accordingly, the thermal management of such systems remains of critical import...
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Parity-time (PT) reversal symmetry, as a representative example in the field of non-Hermitian physics, has attracted widespread research interest in the past few years due to its extraordinary wave dynamics. PT symmet...
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The phase velocity of capillary waves was measured using the Doppler shift of spatially separated beamlets carrying OAM. Each beamlet has a unique beat frequency and is generated using a Higher Order Bessel Beam Integ...
The phase velocity of capillary waves was measured using the Doppler shift of spatially separated beamlets carrying OAM. Each beamlet has a unique beat frequency and is generated using a Higher Order Bessel Beam Integrated in Time (HOBBIT) system.
In our study, Al-doped β-Ga2O3 microrods were deposited on FTO glass substrate via hydrothermal method followed by calcination at 700 °C for 3 h. The Al-doped β-Ga2O3 microrods were characterized using XRD, SEM...
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This paper proposes a simple thermal noise cancellation technique to effectively reduce the output noise in predictive integrators. By combining a low-gain two-stage amplifier and a small auxiliary noise-cancelling ca...
This paper proposes a simple thermal noise cancellation technique to effectively reduce the output noise in predictive integrators. By combining a low-gain two-stage amplifier and a small auxiliary noise-cancelling capacitor, the output noise is highly attenuated. Simulation results for a classic Nagaraj-Ki predictive integrator, considering real MOS switches, demonstrate that the output thermal noise can be reduced up to 87%.
This paper presents our system for the BioASQ10b Phase B task. For ideal answers, we used the fine-tuned BioBERT model on the MNLI dataset to construct sentence embeddings and combined it with BERTScore to select sent...
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