Results 121 to 130 of about 54,040 (257)

High-Efficiency Optical Parametric Oscillator Based on Stimulated Brillouin Scattering Pulse Shaping

IEEE Photonics Journal, 2019
We present an optical parametric oscillator (OPO) that uses a pump pulse shape tailored by stimulated Brillouin scattering. The theoretical analysis is carried out for comparison between Gaussian pump and the step function pulse pump.
Yulei Wang, Hang Yuan, Qingzheng Wang, Chengyu Zhu, Hengkang Zhang, Keyu Chen   +5 more
doaj   +1 more source

Lattice Dynamics of Rutile Germanium Dioxide (r‐GeO2)

Advanced Electronic Materials, EarlyView.
The rutile polymorph of GeO2 is a promising ultra‐wide bandgap material, but key properties for its technological exploitation remain poorly understood. Using polarization angle‐resolved Raman spectroscopy, we resolve long‐standing uncertainties in the energies of Raman‐active phonons and extract relative Raman tensor elements.
Hans Tornatzky, Zbigniew Galazka, Tobias Schulz, Roland Gillen, Markus R. Wagner   +4 more
wiley   +1 more source

Detection of nanometer-scale diameter changes in optical fibers with forward stimulated Brillouin scattering [PDF]

EPJ Web of Conferences
We investigate the potential of forward-stimulated Brillouin scattering in optical fibers to detect changes of the fiber diameter with nanometer resolution.
Álvarez-Ocampo C., Delgado-Pinar M., Díez A., Cruz J. L., Andrés M. V.   +4 more
doaj   +1 more source

High sensitivity distributed temperature fiber sensor using stimulated Brillouin scattering

, 2017
Optical fiber technology has become a very powerful tool for distributed temperature (strain and refractive index) sensing, and can be used to monitor critical infrastructures such as bridges, aircrafts, pipelines, etc.
V. Iezzi, S. Loranger, R. Kashyap
semanticscholar   +1 more source

High‐Performance and Energy‐Efficient Sub‐5 nm 2D Double‐Gate MOSFETs Based on Silicon Arsenide Monolayers

Advanced Electronic Materials, EarlyView.
Sub‐5 nm double‐gate MOSFETs based on 2D SiAs monolayers are investigated using quantum transport simulations. By engineering source‐drain underlap regions, the devices achieve exceptional on‐currents of up to 1206 µA µm−1, surpassing the ITRS 2028 high‐performance targets.
Dogukan Hazar Ozbey, Engin Durgun
wiley   +1 more source

Bio‐Inspired Cascade Photocatalysis on Fe Single‐Atom Carbon Nitride Upcycles Plastic Wastes for Effective Acetic Acid Production

Advanced Energy Materials, EarlyView.
This work demonstrates a novel cascade photocatalysis concept using Fe single‐atom catalysts (Fe@C3N4 SAC) to directly upcycle plastics (PET, PP, PE, PVC) into valuable acetic acid at ambient conditions. Inspired by microbial degradation, the bifunctional cascade photocatalyst combines Fenton‐like oxidation and CO2 photoreduction, as validated by ...
Wei Wei, Cheng Du, Jiawei Ge, Xiang Wang, Zuolong Chen, Meng Zhang, Tao Guo, Lei Wang, Maoyu Wang, Yuzi Liu, Hua Zhou, Chengjun Sun, Ning Chen, Weifeng Chen, Brant Billinghurst, Mohsen Shakouri, Peter Sprenger, Fatemeh Fani Sani, Yulian Quan, Brian Kendall, Roy Brouwer, Yimin A. Wu   +21 more
wiley   +1 more source

Integrated Experimental and Theoretical Insights into Defect‐Induced Functionalities of Cobalt Doped NiO for Multifunctional Solar‐Driven Applications

Advanced Energy and Sustainability Research, EarlyView.
Rational defect engineering in Co‐doped NiO nanostructures, synthesized via a sustainable green route, enables precise bandgap modulation and defect‐state tailoring. Combined experimental–density functional theory analysis identifies 15% Co doping as the optimal threshold for maximizing photocatalytic degradation, photothermal response, and hydrogen ...
Sumayya M. Ansari, Hessa Alashkhari, Meira Alabdouli, Zahra Alzadjali, Sara Almuhairi, Narender Kumar, Naveen Kosar, Tariq Mahmood, Adnan Younis   +8 more
wiley   +1 more source

Large on-chip Brillouin net amplification in silicon-based nano-photonics

AIP Advances, 2019
Recent developments in on-chip forward Brillouin scattering open up potential applications such as RF photonic signal processing, on-chip Brillouin amplification, and on-chip Brillouin lasers.
Hyeongpin Kim, Heedeuk Shin
doaj   +1 more source

Optomechanical sensing of liquids outside standard fibers using forward stimulated Brillouin scattering

, 2016
The analysis of chemical species is one of the most fundamental and long-standing challenges in fiber-optic sensors research. Existing sensor architectures require a spatial overlap between light and the substance being tested and rely either on ...
Y. Antman, Alexander Clain, Y. London, A. Zadok   +3 more
semanticscholar   +1 more source

A Machine Learning Perspective on the Brønsted–Evans–Polanyi Relation in Water‐Gas Shift Catalysis on MXenes

Advanced Intelligent Discovery, EarlyView.
Machine learning predicts activation energies for key steps in the water‐gas shift reaction on 92 MXenes. Random Forest is identified as the most accurate model. Reaction energy and reactant LogP emerge as key descriptors. The approach provides a predictive framework for catalyst design, grounded in density functional theory data and validated through ...
Kais Iben Nassar, Tiago L. P. Galvão, José D. Gouveia, José R. B. Gomes   +3 more
wiley   +1 more source