Results 61 to 70 of about 486,707 (271)

Perspective: Nanophotonic electro-optics enabling THz bandwidths, exceptional modulation and energy efficiencies, and compact device footprints

APL Materials, 2023
The growth of integrated photonics has driven the need for efficient, high-bandwidth electrical-to-optical (EO) signal conversion over a broad range of frequencies (MHz–THz), together with efficient, high bandwidth photodetection.
Larry R. Dalton, Juerg Leuthold, Bruce H. Robinson, Christian Haffner, Delwin L. Elder, Lewis E. Johnson, Scott R. Hammond, Wolfgang Heni, Claudia Hosessbacher, Benedikt Baeuerle, Eva De Leo, Ueli Koch, Patrick Habegger, Yuriy Fedoryshyn, David Moor, Ping Ma   +15 more
doaj   +1 more source

Nonlinear Electromagnetic Fields As a Source of Universe Acceleration

, 2016
A model of nonlinear electromagnetic fields with a dimensional parameter $\beta$ is proposed. From PVLAS experiment the bound on the parameter $\beta$ was obtained.
Kruglov, S. I.
core   +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

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

Advanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

Neutron Acceleration in Uniform Electromagnetic Fields

, 1993
The question as to whether neutron acceleration can occur in uniform electromagnetic fields is examined. Although such an effect has been predicted using the canonical equations of motion some doubt has been raised recently as to whether it is in ...
A. Cimmino, C. R. Hagen, J. Anandan, J. Anandan, J. Anandan, J. Anandan, J. Anandan, J. Anandan, J. Anandan, J. Schwinger, R. C. Casella, S. Coleman, W. Shockley, Y. Aharonov, Y. Aharonov   +14 more
core   +1 more source

Nanoscale Mapping of Plasmonic Charge Transport in Nano‐Resonators Based on Resistive Switching Materials

Advanced Functional Materials, EarlyView.
In this strategy, a conductive nano‐probe is employed to induce nanoscale phase transitions and map the nanoscale conductivity and trap density of GST films. By utilizing the contrasting properties of phase‐change states, nano‐resonators are fabricated that exhibit plasmonic conduction and dramatically different transport characteristics.
Sunwoo Bang, Seunghyo Park, Shashank Shekhar, Yuhyeon Oh, Seunghun Hong   +4 more
wiley   +1 more source

Three‐Terminal Memristor with Tunable Volatility and Set Voltage

Advanced Electronic Materials
Brain‐inspired computing solutions require a suitable hardware platform, where complex operations can be realized at low power consumption. Ideally, the hardware can be reconfigured between multiple functionalities by tuning the corresponding device ...
Kshipra Srikrishnaprabhu, Mila Lewerenz, Markus Fischer, Elias Passerini, Arnaud Schneuwly, Nadia Jimenez Olalla, Raphael Gisler, Martin Andreas Stecher, Alexandros Emboras, Mathieu Luisier, Miklós Csontos, Juerg Leuthold   +11 more
doaj   +1 more source

Ultra-Stable Broadband Comb Laser with Tunable Free Spectral Range and Spectra [PDF]

EPJ Web of Conferences
We present a novel near-infrared broadband, flat-top optical frequency comb spanning 1.6 THz. This comb is generated using an interband gain medium operated in an ultrafast gain recovery regime within a unidirectional ring cavity.
Marzban Bahareh, Miller Lucius, Dikopoltsev Alexander, Blatter Tobias, Kulmer Laurenz, Bertrand Mathieu, Scalari Giacomo, Leuthold Juerg, Faist Jerome   +8 more
doaj   +1 more source

The Effect of Purcell Cavities on the Lifetime of Thermally Activated Delayed Fluorescent Emitters

Advanced Functional Materials, EarlyView.
A pressing challenge to OLED displays and lighting is to balance high efficiency and long operational lifetime in the deep blue spectrum. The Purcell effect can reduce the triplet density and hence the probability for destructive energy‐driven triplet annihilation events that limit the OLED lifetime. Here we study of the Purcell effect on two different
Sritoma Paul, Haonan Zhao, Collin N. Muniz, Mark E. Thompson, Stephen R. Forrest   +4 more
wiley   +1 more source

Scientific evidence invalidates health assumptions underlying the FCC and ICNIRP exposure limit determinations for radiofrequency radiation: implications for 5G

Environmental Health, 2022
In the late-1990s, the FCC and ICNIRP adopted radiofrequency radiation (RFR) exposure limits to protect the public and workers from adverse effects of RFR.
International Commission on the Biological Effects of Electromagnetic Fields (ICBE-EMF)
doaj   +1 more source