Results 91 to 100 of about 285,897 (261)

Faint and Extended Galaxies as Probes for Understanding the Nature of Dark Matter Particles

International Journal of High Energy Physics
This study delves into the complex nature of dark matter, a fundamental yet poorly understood component of the universe that constitutes approximately 27% of its total mass-energy content. By focusing on faint and extended galaxies specifically dwarf galaxies and low surface brightness galaxies this research aims to elucidate the properties of dark ...
openaire   +1 more source

Dark Energy Search with Supernovae

, 2004
To determine the nature of dark energy from observational data, it is important that we use model-independent and optimal methods. We should probe dark energy using its density (allowed to be a free function of cosmic time) instead of its equation of ...
Barger, Barris, Branch, Hawkins, Knop, Lewis, Maor, Perlmutter, Phillips, Riess, Riess, Spergel, Tegmark, Tonry, Verde, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Yun Wang   +22 more
core   +2 more sources

Infrared Nanocrystals for Space Application: Hardness to Irradiations

Advanced Functional Materials, EarlyView.
This article investigates infrared HgTe nanocrystals under X‐ray and ion irradiation, revealing remarkable radiation hardness. It uncovers distinct degradation mechanisms and shows that the nanomaterial outperforms integrated electronics. The results position colloidal nanocrystals as promising candidates for resilient space and harsh‐environment ...
Alexandre Neyret, Dario Mastrippolito, Bingbing Xia, Adrien Khalili, Maxime Lebreton, Giorgia Strobbia, Albin Colle, Marco Paye, Mariarosa Cavallo, Erwan Bossavit, Claire Abadie, Yoann Prado, Debora Pierucci, Victor Parahyba, Francois Coursaget, David Darson, Emrick Briand, Ian Vickridge, Stephane Demiguel, Sebastien Massenot, Jean‐Marc Belloir, Vincent Goiffon, Emmanuel Lhuillier   +22 more
wiley   +1 more source

Revisiting the decoupling limit of the Georgi-Machacek model with a scalar singlet

Journal of High Energy Physics
We study the connection between collider and dark matter phenomenology in the singlet extension of the Georgi-Machacek model. In this framework, the singlet scalar serves as a suitable thermal dark matter (DM) candidate. Our focus lies on the region v χ <
Geneviève Bélanger, Juhi Dutta, Rohini M. Godbole, Sabine Kraml, Manimala Mitra, Rojalin Padhan, Abhishek Roy   +6 more
doaj   +1 more source

Non-WIMP Candidates

, 2010
Non-WIMP dark matter candidates include particles motivated by minimality, candidates motivated by experimental anomalies, and exotic possibilities motivated primarily by the desire of clever iconoclasts to highlight how truly ignorant we are about the ...
Feng, Jonathan L.
core  

Dense Nanofibrillar Collagen–Silica Hybrids with High Strength and ECM‐Mimetic Tissue Integration

Advanced Functional Materials, EarlyView.
Dense nanofibrillar collagen–silica hybrids are engineered by synchronizing collagen fibrillogenesis with silica condensation, producing printable scaffolds that unexpectedly approach native extracellular matrix organization and strength. These cell‐free constructs guide endogenous cell‐infiltration, enable localized matrix remodeling, and integrate ...
Norein Norein, Shima Tavakoli, Philipp Wolf, Xie Ling, Veronica Rondahl, Klaus Leifer, Gry Hulsart‐Billström, Jöns Hilborn   +7 more
wiley   +1 more source

Ultrastable Photoactive Halide Perovskite Nanocrystal‐Sensitized SnO2 Nanorods for Room‐Temperature NO2 Detection

Advanced Functional Materials, EarlyView.
ABSTRACT Metal oxide (MOx)‐based NO2 gas sensors typically require high temperatures or ultraviolet light, limiting their practical use. To enable visible‐light activation at room temperature, efficient and stable photosensitizers should be integrated with nanostructured MOx hosts.
Yeonji Yuk, Dokyum Kim, Jun‐Cheol Park, Yoonsung Jung, Inhyeok Oh, Donghyeon Lee, Yejoon Kim, Ji‐Eun Yeo, Young Min Song, Chang‐Lyoul Lee, Sanghan Lee   +10 more
wiley   +1 more source

3D‐Printed Porous Hydroxyapatite Formed via Enzymatic Mineralization

Advanced Functional Materials, EarlyView.
Bone combines lightness, strength, and the ability to heal, inspiring new materials design. This work introduces a room‐temperature, enzyme‐mediated 3D printing method to create porous hydroxyapatite scaffolds. The process avoids energy‐intensive sintering, preserves bioactivity, and allows control over porosity and mineralization.
Francesca Bono, Anna Puiggalí‐Jou, Greta Cocchi, Mariangela Miccoli, Katharina Maniura‐Weber, Marcy Zenobi‐Wong, Esther Amstad   +6 more
wiley   +1 more source

Low-energy radiative backgrounds in CCD-based dark-matter detectors

Journal of High Energy Physics
The reach of sub-GeV dark-matter detectors is at present severely affected by low-energy events from various origins. We present the theoretical methods to compute the single- and few-electron events that arise from secondary radiation emitted by high ...
Peizhi Du, Daniel Egaña-Ugrinovic, Rouven Essig, Mukul Sholapurkar   +3 more
doaj   +1 more source

VIVID: A qPCR‐Based Platform for Sensitive and Quantitative In Vivo Tracking of Extracellular Vesicles

Advanced Functional Materials, EarlyView.
This study introduces VIVID (Vesicle In Vivo Identification using DNA), a qPCR‐based platform that tracks PCR‐amplifiable DNA tags loaded in the EVs for accurate and quantifiable EV biodistribution in vivo. ABSTRACT Extracellular vesicles (EVs) represent promising carriers for nucleic acid therapeutics, offering advantages over synthetic nanoparticles ...
Oscar Boyadjian, Talin Ebrahimian, Jonathan Miranda O'Connor, Janusz Rak, Stephanie Lehoux, Maryam Tabrizian   +5 more
wiley   +1 more source