Results 71 to 80 of about 1,964,359 (279)

Inverse Design of Nanoparticulate Materials

Advanced Materials, EarlyView.
Inverse design shifts nanomaterial development from empirical trial‐and‐error to predictive model‐driven strategies. It can rely on knowledge‐based, data‐based, or hybrid process and property functions. This perspective article provides a practical framework for applying inverse design based on instructive examples. It discusses which modeling approach
Nabi Etienne Traoré, Annika Mauch, Michelle Berthold, Lukas Pflug, Wolfgang Peukert, Nicolas Vogel   +5 more
wiley   +1 more source

Receiving of direct-sequence spread spectrum signal with quadrature phase-shift keying in case of multiple access interference and internal Gaussian noise

Известия высших учебных заведений России: Радиоэлектроника, 2015
Receiving of the broadband phase modulated signal with quadrature phase-shift keying in case of multiple access in-terference and internal Gaussian noise has been considered.
G. S. Nakhmanson, S. V. Kozlov
doaj  

Linear and flat antenna arrays focused on a broadband signals in radio communications, microwave technologies and non-destructive testing

Физика волновых процессов и радиотехнические системы
Background. The main properties and characteristics of focused antenna systems using narrowband signals are known and generally coincide with the properties of broadband discrete antennas with a symmetric spectrum.
Denis A. Vedenkin
doaj   +1 more source

RADIO NAVIGATION SYSTEM BROADBAND SIGNAL SEARCH

Известия высших учебных заведений России: Радиоэлектроника, 2018
The study object is the search procedure for a ground-based radionavigation system signal using noise-like discrete signals with a long baseline. A comparative analysis of the signal search quality indicators is carried out, which is the most time ...
Aleksey S. Marugin, Vladimir K. Orlov, Rumiya R. Khaziakhmetova   +2 more
doaj   +1 more source

Electrocardiographic Signal Broadband Properties

Computing in Cardiology Conference (CinC)
Background: Low, high, and ultra-high-frequency ECGs measure ventricular activation differently. However, their principles and properties have not yet been studied systematically. Method: 5 kHz ECG resting recordings were acquired in 134 subjects. We used an extended 12-lead ECG setup with 6 (V1-V6)+6 extended precordial leads. We measured the distance
Jurak, Pavel, Viscor, Ivo, Halamek, Josef, Soukup, Ladislav, Plešinger, Filip, Smisek, Radovan, Vondra, Vlastimil, Matejkova, Magdalena, Nguyên, Uyen Chau, Prinzen, Frits W., Curila, Karol, Leinveber, Pavel   +11 more
openaire   +1 more source

Parity‐Dependent THz Harmonic Generation in Electrically Pumped Micro‐Lasers Exploiting Topological Insulator–Metamaterial Gratings

Advanced Materials, EarlyView.
Topological insulator–metamaterials integrated with electrically driven terahertz quantum cascade lasers enable parity‐dependent harmonic generation. Bulk‐dominated Bi2Se3 favors third‐harmonic emission at 9.96 THz, whereas topological‐surface‐state‐dominated Bi2Se3, Bi2Te3, and (Bi,Sb)2Te3 generate strong second harmonics near 6.5 THz.
Alessandra Di Gaspare, Craig S. Knox, Ahmet Yagmur, Sara Ghayeb Zamharir, Lianhe Li, Satoshi Sasaki, A. Giles Davies, Edmund H. Linfield, Joshua R. Freeman, Miriam S. Vitiello   +9 more
wiley   +1 more source

SUPERFAST SCANNING BEAM AND SYNTHESIS OF SHORT SIGNAL IN RADIATION FIELD OF MIMO RADAR TRANSMIT ARRAY

Российский технологический журнал, 2016
The effects of "superfast scanning beam" and synthesis of "short" (broadband) signal in the radiation field of the antenna array, excited by mutually orthogonal coherent narrowband signals are under consideration.
B. M. Vovshin, K. V. Kulikov
doaj   +1 more source

Highly Sensitive Broadband Photodetectors Based on Donor–Acceptor 2D Conjugated Coordination Polymers

Advanced Materials, EarlyView.
Donor–acceptor molecular design and chemical vapor deposition growth enable the two‐dimensional nickel‐tetraaminobenzoquinone films with strong broadband absorption and efficient charge separation. The resulting photodetectors exhibit a structured broadband response with a high responsivity of ∼3.1 A W−1 and a response time of ∼170 µs, which surpasses ...
Yunxu Chen, Jinxin Liu, Shuai Fu, Apurba Mahapatra, Dongxu Wang, Mike Hambsch, Angelika Wrzesińska‐Lashkova, Jing Wang, Fabian Paulus, Yana Vaynzof, Stefan C. B. Mannsfeld, Fuchun Zhang, Mischa Bonn, Renhao Dong, Xinliang Feng   +14 more
wiley   +1 more source

Life‐Like Ferrous Oxide Microspheres from Kombucha

Advanced Materials Interfaces, EarlyView.
Kombucha bacterial cellulose, sodium alginate, and ferrous nitrate self‐assemble into membrane‐enclosed iron oxide microspheres. These microspheres bud daughter vesicles, sustain 24‐h electrochemical oscillations, and filter theta‐band signals.
Panagiotis Mougkogiannis, Anna Nikolaidou, Andrew Adamatzky   +2 more
wiley   +1 more source

Antenna Arrays Focused on Broadband Signals

Journal of Telecommunications and Information Technology, 2016
Broadband and ultra-wideband signals are increasingly used in modern radio systems. Traditional performance of evaluation antennas operating with narrowband signals are not always adequately reflect the characteristics of broadband antennas, at least in
Denis Andreevich Vedenkin, Yuri Evgenevich Sedelnikov, Aydar Revkatovich Nasybullin   +2 more
doaj   +1 more source