Results 61 to 70 of about 15,014 (299)

Tailoring Phonon‐Driven Responses in α‐MoO3 through Isotopic Enrichment

Advanced Materials, EarlyView.
ABSTRACT The implementation of polaritonic materials into nanoscale devices requires selective tuning of parameters to realize desired spectral or thermal responses. One robust material, α‐MoO3, an orthorhombic crystal boasting three distinct phonon dispersions, provides three polaritonic dispersions of hyperbolic phonon polaritons (HPhPs) across the ...
Thiago S. Arnaud, Ryan W. Spangler, Johnathan D. Georgaras, Jonah B. Haber, Daniel Hirt, Maximilian Obst, Gonzalo Álvarez‐Pérez, Mackey Long III, Felix G. Kaps, Jakob Wetzel, Courtney Ragle, John E. Buchner, Youngji Kim, Aditha S. Senarath, Richarda Niemann, Mingze He, Giulia Carini, Unai Arregui‐Leon, Akash C. Behera, Ramachandra Bangari, Nihar Sahoo, Niels C. Brumby, J. Michael Klopf, Martin Wolf, Lukas M. Eng, Susanne C. Kehr, Thomas G. Folland, Alexander Paarmann, Patrick E. Hopkins, Felipe Jornada, Jon‐Paul Maria, Joshua D. Caldwell   +31 more
wiley   +1 more source

Deep Learning Inverse Design of Phase‐Change Reconfigurable Terahertz Metadevices for Multidimensional Secure Communication

Advanced Materials, EarlyView.
A deep learning inverse‐design framework is established to create versatile reconfigurable terahertz metadevices. By synergizing deep learning with phase‐change materials, this approach enables on‐demand customization of multidimensional electromagnetic responses.
Yisheng Dong, Xieyu Chen, Aarthy Nagarajan, Yi Yang, Zhihao Wang, Rui Yu, Chuang Zheng, Chunmei Ouyang, Xueqian Zhang, Tun Cao, Ranjan Singh, Zhen Tian   +11 more
wiley   +1 more source

Transient Laser‐Shocked Synthesis of Amorphous Layer‐Supported Metal Nanocrystals for Efficient Nitrate Reduction

Advanced Materials, EarlyView.
A general, versatile laser‐shock synthesis process is reported to produce various bimetallic CuNi, CuFe, CuCo, and medium‐entropy CuFeCoNi heterostructures, in which crystalline metal nanoparticles are anchored to amorphous hydroxide supports. During nitrate reduction reaction, the heterostructures undergo dynamic amorphous/crystalline reconstruction ...
Weihua Guo, Jixun Zhang, Siwei Zhang, Yangbo Ma, Yun Song, Jianjun Su, Zihao Li, Yinger Xin, Qiang Zhang, Mingming He, Ruixuan Wang, Rui Xue, Shibo Xi, Ying Wang, Shenlong Zhao, Tao Yang, Zhengxiao Guo, Ben Zhong Tang, Ruquan Ye   +18 more
wiley   +1 more source

Porous waveguide facilitated low divergence quantum cascade laser

, 2011
A quantum cascade laser with a porous waveguide structure emitting at4.5μm is reported. A branchlike porous structure filled with metal material was fabricated on both sides of the laser ridge by an electrochemical etching process.
Liu, Fengqi, Wanfeng Liu, Jinchuan Zhang, Lu, Quanyong, Lijun Wang, Yin, Wen, Zhang, Jinchuan, Fengqi Liu, Wang, Zhanguo, Wen Yin, Liu, Junqi, Lu Li, Wang, Lijun, Liu, Wanfeng, Li, Lu, Junqi Liu, Liu, F.(fqliu@semi.ac.cn), Quanyong Lu, Zhanguo Wang   +18 more
core   +1 more source

Anti-correlation phenomena in quantum cascade laser frequency combs

APL Photonics, 2023
In quantum cascade laser frequency combs, the intensity distribution of the optical spectrum can be split into two well-separated lobes of longitudinal modes that, even when far apart, have a common phase relation and preserve equal frequency separation.
B. Chomet, T. Gabbrielli, D. Gacemi, F. Cappelli, L. Consolino, P. De Natale, F. Kapsalidis, A. Vasanelli, Y. Todorov, J. Faist, C. Sirtori   +10 more
doaj   +1 more source

Quantum Cascade Lasers in Biomedical Infrared Imaging [PDF]

Trends in Biotechnology, 2015
Technological advances, namely the integration of quantum cascade lasers (QCLs) within an infrared (IR) microscope, are enabling the development of valuable label-free biomedical-imaging tools capable of targeting and detecting salient chemical species within practical clinical timeframes.
Bird, Benjamin, Baker, Matthew J.
openaire   +4 more sources

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

Advanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz, Yaroslav Mudryk, Jun Cui, Lucas Griffith, Duane D. Johnson, Julie Slaughter   +5 more
wiley   +1 more source

Shaping Carbon Nitrides for Advanced Macrostructures

Advanced Materials Technologies, EarlyView.
This review examines how carbon nitride can be shaped through a range of printing and interfacial assembly methods. By bringing together additive manufacturing and liquid–liquid structuring concepts, carbon nitride is moving beyond its traditional powder‐based photocatalyst form toward digitally designed robust macroscale architectures with high design
Simona Baluchová, Baris Kumru
wiley   +1 more source

Frequency-tunable external cavity terahertz quantum cascade laser

, 2009
We demonstrate a tunable terahertz quantum cascade laser using an abutted silicon lens and grating feedback.
Qi Qin, Kumar, Sushil, Sushil Kumar, Reno, John L., Qin, Qi, Alan W. M. Lee, Lee, Alan, Hu, Qing, John L Reno, Qing Hu   +9 more
core   +1 more source

Universal Quasi-Level Parameter for the Characterization of Laser Operation

IEEE Photonics Journal, 2018
A parameter is proposed which classifies the laser operating characteristics according to the quasi-level terminology, i.e., as intermediate behavior between that of an ideal two- and three-level or three- and four-level laser scheme.
Christian Jirauschek
doaj   +1 more source