Results 41 to 50 of about 248,313 (294)

A magnetic lens for cold atoms controlled by a rf field

, 2008
We report on a new type of magnetic lens that focuses atomic clouds using a static inhomogeneous magnetic field in combination with a radio-frequency field. The experimental study is performed with a cloud of cold cesium atoms. The rf field adiabatically
Gorceix, O., Keller, J. -C., Laburthe-Tolra, B., Marechal, E., Vernac, L.   +4 more
core   +2 more sources

Radio-frequency transparent demodulation for broadband hybrid wireless-optical links [PDF]

, 2010
A novel demodulation technique which is transparent to radio-frequency (RF) carrier frequency is presented and experimentally demonstrated for multigigabit wireless signals.
Alemany, Ruben, Caballero Jambrina, Antonio, Herrera, Javier, Sambaraju, Rakesh, Tafur Monroy, Idelfonso, Zibar, Darko   +5 more
core   +2 more sources

RF-DNA: Radio-Frequency Certificates of Authenticity [PDF]

, 2007
A certificate of authenticity (COA) is an inexpensive physical object that has a random and unique multidimensional structure Swhich is hard to near-exactly replicate. An inexpensive device should be able to scan object's physical "fingerprint," i.e., obtain a set of features in the form of a multidimensional signal x that pseudo-uniquely represents S.
Gerald DeJean, Darko Kirovski
openaire   +1 more source

Prognostic Impact of Treatment Modalities, Including Targeted Compartmental Radio‐Immunotherapy, in a Cohort of Neuroblastoma Patients With CNS Metastases at Relapse

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Neuroblastoma (NB) with central nervous system (CNS) metastases is rare at diagnosis, but occurs more often during relapse/progression. Patients with CNS metastases face a dismal prognosis, with no standardized curative treatment available.
Vicente Santa‐Maria Lopez, Anna Felip‐Badia, Marina Caballero‐Bellon, Nazaret Sanchez‐Sierra, Alicia Castañeda, Moira Garraus, Maite Gorostegui, Margarida Simão‐Rafael, Juan Pablo Muñoz, Marta Perez‐Somarriba, Salvador Mañe, Mariana Cecilia Planells, Sara Perez‐Jaume, Jaume Mora   +13 more
wiley   +1 more source

Investigation and Research of High-Performance RF MEMS Switches for Use in the 5G RF Front-End Modules

Micromachines, 2023
In this article, based on the developed methodology, the stages of designing two designs of high-performance radio-frequency single-pole single-throw microelectromechanical switches are investigated.
Alexey Tkachenko, Igor Lysenko, Andrey Kovalev   +2 more
doaj   +1 more source

Bimetallic (NiFe) and Trimetallic (NiFeCr) Nanoalloys from Metal Oxides Using a Microwave Hydrogen Plasma

Advanced Engineering Materials, EarlyView.
Bimetallic (NiFe) and trimetallic (NiFeCr) nanoalloys (NAs) are synthesized using corresponding oxide mixtures using microwave hydrogen plasma within a few milliseconds. The process simultaneously 1) reduces metal oxides to metals; 2) downsizes the particles from micrometers to nanometers; and 3) blends the metals to form NAs.
Sachin Kumar, Mohammad Kazemi, Zichang Xiong, Thomas Cameron, Julian Held, Uwe Kortshagen   +5 more
wiley   +1 more source

IceCube's In-Ice Radio Extension: Status and Results

, 2010
In 2006-2010, several Radio Frequency (RF) detectors and calibration equipment were deployed as part of the IceCube array at depths between 5 to 1400 meters in preparation for a future large scale GZK neutrino detector.
A.W. Laundrie, B. Rotter, Barwick, Dunham, E. Cheng, E. Kulcyk, G.S. Varner, Gordon, Gorham, Gusev, H. Landsman, Kravchenko, Kravchenko, L. Ruckman, Landsman, P.W. Sandstrom, Varner   +16 more
core   +1 more source

Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability

Advanced Functional Materials, EarlyView.
Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong, William D. J. Tremlett, Lucy Hart, Beier Hu, Zhuoran Qiao, Patipan Sukpoonprom, Sarah Fearn, Edoardo Angela, Matilde Brunetta, Demosthenes C. Koutsogeorgis, Nikolaos Kalfagiannis, Davide Nodari, Martyn A. McLachlan, Piers R. F. Barnes, Artem A. Bakulin, Nicholas J. Long, Nicola Gasparini   +16 more
wiley   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

RF Challenge: The Data-Driven Radio Frequency Signal Separation Challenge

IEEE Open Journal of the Communications Society
We address the critical problem of interference rejection in radio-frequency (RF) signals using a data-driven approach that leverages deep-learning methods. A primary contribution of this paper is the introduction of the RF Challenge, which is a publicly
Alejandro Lancho, Amir Weiss, Gary C. F. Lee, Tejas Jayashankar, Binoy G. Kurien, Yury Polyanskiy, Gregory W. Wornell   +6 more
doaj   +1 more source