Results 141 to 150 of about 22,766 (290)

Ion‐Reconfigurable “N”‐Shaped Antiambipolar Behavior in Organic Electrochemical Transistors

Advanced Materials, EarlyView.
A unique N‐shaped negative differential transconductance (NDT) characteristics is demonstrated in single‐polymer organic electrochemical transistors through a sequential doping–redox–doping process driven by iodide ions. This redox‐driven mechanism enables low‐voltage, ion‐controlled reconfigurability and tunable current modulation, allowing seamless ...
Debdatta Panigrahi, Daniele Zucchelli, Zeinab Hamid, Christina Kousseff, Arup Sarkar, Aristea Pavlou, Zhitian Ling, Somayeh Kashani, Iain McCulloch, Paul W. M. Blom, Fabrizio Torricelli, Paschalis Gkoupidenis   +11 more
wiley   +1 more source

Dark matter in the Milky Way: uncertainties on its distribution and implications on its particle nature

, 2019
O conhecimento detalhado da distribuição da matéria escura na Via Láctea é importante para a compreensão da interação entre bariões e matéria escura nos processos envolvidos na formação e evolução das galáxias. Além disso, é um elemento-chave para experimentos que objetivam detectar direta ou indiretamente a partícula de matéria escura devido a ...
openaire   +1 more source

Relic Abundance of Scalar Dark Matter [PDF]

, 2016
The nature of dark matter is one of the great unsolved questions in particle physics and cosmology. Infact, the hypothesis of dark matter is strongly supported by the galaxy rotation curve, gravitational lensing and large scale structure of the universe.
Dalal, Shweta, Sahu, Narendra
core  

Energetic Offset in Organic Solar Cells‐ Importance, Confusion and Outlook

Advanced Materials, EarlyView.
Energetic offsets in organic solar cells (OSCs) remain a subject of debate due to measurement‐ and lab‐dependent discrepancies. This Perspective clarifies the physical origins of these variations and identifies temperature‐dependent electro‐optical methods as a reliable approach to obtain consistent offset values.
Nakul Jain, Xian'e Li, Mats Fahlman, Olle Inganäs, Koen Vandewal, Feng Gao   +5 more
wiley   +1 more source

Asymmetric dark matter from semi-annihilation: unitarity constraints and long-lived final states

Journal of High Energy Physics
This work presents an asymmetric dark matter model with relic density determined by the freeze-out of asymmetric semi-annihilations into long-lived particles slowly decaying into the Standard Model states.
Tomáš Blažek, Peter Maták, Viktor Zaujec   +2 more
doaj   +1 more source

Seeking Alternative Dark Matter Scenarios

Several dark matter (DM) models have been proposed in the broader scientific community; however, the true nature of this elusive particle remains unknown to this day.
Prolay Chanda (21349967)
core   +1 more source

One‐Dimensional Materials Supported in Two‐Dimensional Van der Waals Metal–Organic Frameworks with Optical Anisotropy Switching via Twist‐Engineering

Advanced Materials, EarlyView.
We introduce a molecular strategy to assemble one‐dimensional (1D) materials into two‐dimensional (2D) van der Waals metal–organic frameworks (MOFs). Crystals of [FeX(pzX)(bpy)] (X = Cl, F) form anisotropic 2D layers that can be mechanically exfoliated into thin sheets.
Eleni C. Mazarakioti, Carla Boix‐Constant, Iván Gómez‐Muñoz, Diego López‐Alcalá, Sergio Revuelta, Marco Ballabio, Vasileios Balos, José J. Baldoví, Enrique Cánovas, Josep Canet‐Ferrer, Guillermo Mínguez Espallargas, Samuel Mañas‐Valero, Eugenio Coronado   +12 more
wiley   +1 more source

Gravitational production of sterile neutrinos

Journal of High Energy Physics
We consider gravitational production of singlet fermions such as sterile neutrinos during and after inflation. The production efficiency due to classical gravity is suppressed by the fermion mass.
Fotis Koutroulis, Oleg Lebedev, Stefan Pokorski   +2 more
doaj   +1 more source

Simulations of Small Mass Structures in the Local Universe to Constrain the Nature of Dark Matter [PDF]

, 2014
I use N-body simulations of the Milky Way and its satellite population of dwarf galaxies to probe the small-scale power spectrum and the properties of the unknown dark matter particle.
Polisensky, Emil Joseph, Polisensky, Emil   +1 more
core  

Gapless Superconductivity From Extremely Dilute Magnetic Disorder in 2H‐NbSe2‐xSx

Advanced Materials, EarlyView.
We demonstrate that 2H‐NbSe2‐xSx hosts gapless superconductivity at unexpectedly low magnetic impurity concentrations. Combining STM, Bogoliubovde Gennes simulations, DFT, and quasiparticle interference, we comprehensively study the development of gapless behavior and show that SeS substitution reshapes the band structure, enhances nesting, and drives ...
Jose Antonio Moreno, Mercè Roig, Víctor Barrena, Edwin Herrera, Alberto M. Ruiz, Samuel Mañas‐Valero, Antón Fente, Anita Smeets, Jazmín Aragón, Yanina Fasano, Beilun Wu, Maria N. Gastiasoro, Eugenio Coronado, José J. Baldoví, Brian M. Andersen, Isabel Guillamón, Hermann Suderow   +16 more
wiley   +1 more source