Results 41 to 50 of about 119,781 (297)

Transmission Losses in Left-handed Materials

, 2002
We numerically analyze the origin of the transmission losses in left-handed structures. Our data confirms that left handed structures can have very good transmission properties, in spite of the expectable dispersion of their effective permeability and ...
C. M. Soukoulis, D.R. Smith, D.R. Smith, D.R. Smith, I. Rousochatzakis, J.B. Pendry, J.B. Pendry, J.B. Pendry, J.B. Pendry, J.B. Pendry, M. Bayindir, N. Garcia, N. Garcia, P. Markoš, P. Markoš, P.M. Valanju, R.A. Shelby, R.A. Shelby, V.G. Veselago   +18 more
core   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source

Dielectric properties of bismuth titanate ceramics containing SiO2 and Nd2O3 as additives [PDF]

Processing and Application of Ceramics, 2012
Bismuth-titanate ceramics containing SiO2 and Nd2O3 as additives are synthesized by melt quenching method in the system Bi2O3-TiO2-Nd2O3-SiO2 in the temperature range of 1250–1500 °C. The phase composition of the obtained materials is determined by X-ray
Stanislav S. Slavov, Milena Z. Krapchanska, Elena P. Kashchieva, Svetlin B. Parvanov, Yanko B. Dimitriev   +4 more
doaj  

Poynting's theorem for planes waves at an interface: a scattering matrix approach

, 2007
We apply the Poynting theorem to the scattering of monochromatic electromagnetic planes waves with normal incidence to the interface of two different media.
C. Zagoya, Cohen-Tannoudji C., Jackson J. D., M. Martínez-Mares, Marion J. B., Mello P. A., Merzbacher E., Reitz J. R., V. Domínguez-Rocha   +8 more
core   +1 more source

All-optical tuning of EIT-like dielectric metasurfaces by means of chalcogenide phase change materials [PDF]

, 2016
Electromagnetically induced transparency (EIT) is a pump-induced narrowband transparency window within an absorption lin e of the probe beam sp ectrum in an atomic system.
Petronijevic, Emilija, Sibilia, Concetta
core   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

Dielectric losses in multi-layer Josephson junction qubits

, 2013
We have measured the excited state lifetimes in Josephson junction phase and transmon qubits, all of which were fabricated with the same scalable multi-layer process.
Gunnarsson, David, Hakonen, Pertti, Li, Jian, Paraoanu, Gheorghe Sorin, Pirkkalainen, Juha-Matti, Prunnila, Mika, Sillanpää, Mika   +6 more
core   +1 more source

Approximate square-root-time relaxation in glass-forming liquids [PDF]

, 2007
We present data for the dielectric relaxation of 43 glass-forming organic liquids, showing that the primary (alpha) relaxation is often close to square-root-time relaxation.
Albena I. Nielsen, Barlow A. J., Bo Jakobsen, Davidson D. W., Doi M., Isakovich M. A., Isakovich M. A., Jeppe C. Dyre, Kremer F., Kristine Niss, Niels Boye Olsen, Ranko Richert, Tage Christensen   +12 more
core   +3 more sources

Harnessing Fungal Biowelding for Constructing Mycelium‐Engineered Materials

Advanced Engineering Materials, EarlyView.
Mycelium‐bound composites (MBCs) offer low‐carbon alternatives for construction, yet interfacial bonding remains a critical challenge. This review examines fungal biowelding as a biocompatible adhesive, elucidating mycelium‐mediated interfacial mechanisms and their role in material assembly. Strategies to optimize biowelding are discussed, highlighting
Xue Brenda Bai, Xinrui Sarah Niu, Zhao Qin   +2 more
wiley   +1 more source

Microwave/terahertz dielectric properties of high-Q willemite ceramics: Dual control through non-stoichiometric design and Ge4+ substitution

Journal of Materiomics
The advancement of communication technologies demands dielectric materials with superior performance characteristics, particularly low permittivity and minimal dielectric loss. This study investigates Ge4+-substituted willemite ceramics, including Zn2Si1–
Yutian Lu, Weijia Guo, Chongyang Zhang, Bowen Yin, Hui Zhang, Zhenxing Yue   +5 more
doaj   +1 more source