Results 51 to 60 of about 116,428 (235)

Influence of reheating on the trispectrum and its scale dependence [PDF]

, 2013
We study the evolution of the non-linear curvature perturbation during perturbative reheating, and hence how observables evolve to their final values which we may compare against observations.
Byrnes, Christian T, Copeland, Edmund J, Leung, Godfrey, Tarrant, Ewan R M   +3 more
core   +2 more sources

Direct Laser Ablation of 2D Material Films for Fabricating Multi‐Functional Flexible and Transparent Devices

Advanced Functional Materials, EarlyView.
A scalable method for direct laser patterning of 2D films on transparent substrates like polycarbonate and glass is presented. This technique eliminates the need for photolithography and solvents, enabling the fabrication of functional devices like strain gauges, supercapacitors, and photodetector arrays.
Yigit Sozen, Yu Kyoung Ryu, Javier Martinez, Andres Castellanos‐Gomez   +3 more
wiley   +1 more source

Perovskite Light‐Emitting Diodes with Quantum Wires and Nanorods

Advanced Materials, EarlyView.
This review focuses on low‐dimensional perovskite materials and discusses their applications in light‐emitting diodes (LEDs). Special attention is given to the introduction of perovskite quantum wires and nanorods, two unique types of one‐dimensional (1D) materials, and their interesting optoelectronic properties.
Qianpeng Zhang, Daquan Zhang, Zebing Liao, Yang Bryan Cao, Mallem Kumar, Swapnadeep Poddar, Junchao Han, Ying Hu, Hualiang Lv, Xiaoliang Mo, Abhishek Kumar Srivastava, Zhiyong Fan   +11 more
wiley   +1 more source

Inflation without Inflaton(s) [PDF]

, 2006
We propose a model for early universe cosmology without the need for fundamental scalar fields. Cosmic acceleration and phenomenologically viable reheating of the universe results from a series of energy transitions, where during each transition vacuum ...
Abramowitz M, Arkani-Hamed N, Bousso R, Fred C Adams, Freese K, Gordon L Kane, Kachru S, Kachru S, Malcolm J Perry, Mukhanov V F, Scott Watson, Spergel D N   +11 more
core   +3 more sources

Developing Cathode Films for Practical All‐Solid‐State Lithium‐Sulfur Batteries

Advanced Materials, EarlyView.
The development of all‐solid‐state lithium‐sulfur batteries offers higher specific energies and lower costs compared to state‐of‐the‐art Li‐ion batteries. However, a lack of mechanistic understanding hinders advancement. This review analyzes key electrode parameters, evaluates progress in enhancing ion/electron percolation, and addresses ...
Chao Ye, Shijie Xu, Huan Li, Jieqiong Shan, Shi‐Zhang Qiao   +4 more
wiley   +1 more source

Spotted Inflation

, 2010
We describe new scenarios of generating curvature perturbations when inflaton (curvaton) has significant interactions. We consider a ``spot'', which arises from interactions associated with enhanced symmetric point (ESP) on the trajectory.
Matsuda, Tomohiro
core   +1 more source

The Deepest Blue: Major Advances and Challenges in Deep Blue Emitting Quasi‐2D and Nanocrystalline Perovskite LEDs

Advanced Materials, EarlyView.
In this review, the recent development of deep‐blue (≤465 nm) perovskite light‐emitting diodes (PeLEDs) are summarized, using different perovskite nanomaterials, including nanocrystals (NCs), quantum dots (QDs), nanoplatelets (NPLs), quasi‐2D thin film, 3D bulk thin film, as well as lead‐free perovskite nanomaterials.
Pui Kei Ko, Jianchao Ge, Pengbo Ding, Dezhang Chen, Hoi Lam Tammy Tsang, Nitish Kumar, Jonathan E. Halpert   +6 more
wiley   +1 more source

Curvaton Dynamics in Brane-worlds [PDF]

, 2006
We study the curvaton dynamics in brane-world cosmologies. Assuming that the inflaton field survives without decay after the end of inflation, we apply the curvaton reheating mechanism to Randall-Sundrum and to its curvature corrections: Gauss-Bonnet ...
Alabidi L Lyth D H, Allahverdi R Enqvist K Jokinen A Mazumdar A, Allahverdi R Enqvist K Jokinen A Mazumdar A, Bento M C Gonzalez Felipe R Santos N M C, Bouhmadi-López M Maartens R Wands D, Bowcock P, Brown R A, Brown R A, Bueno Sanchez J C Dimopoulos K, Bueno Sanchez J C Dimopoulos K, Cardenas V H, Charmousis C, Davis S C, Dimopoulos K, Dimopoulos K, Dimopoulos K, Dufaux J-F Lidsey J E Maartens R Sami M, Eleftherios Papantonopoulos, Gumjudpai B Naskar T Ward J, Gunther U Zhuk A, Huang Q G Li M She J H, Ida D, Kehagias A, Kinney W H Kolb E W Melchiorri A Riotto A, Kofinas G, Kraus P, Langlois D, Langlois D, Lazarides G, Lidsey J E Nunes N J, Maartens R, Martin J Ringeval C, Mathews G J Ichiki K Kajino T Orito M Yahiro M, Neupane I P, Papantonopoulos E, Papantonopoulos E, Peloso M, Spergel D N, Tsujikawa S Sami M Maartens R, Vassilios Zamarias, Wands D, Zhang H S, Zhang H S Zhu Z H   +42 more
core   +4 more sources

Multifunctional Neural Probes Enable Bidirectional Electrical, Optical, and Chemical Recording and Stimulation In Vivo

Advanced Materials, EarlyView.
Convergence drawing is used to create flexible, microscale, multifunctional fiber‐based neural probes. Optimized materials selection enables individual devices to perform neural recording, electrical stimulation, optogenetics, fiber photometry, fluid delivery, and voltammetric neurotransmitter detection in rodents.
Nicolette Driscoll, Marc‐Joseph Antonini, Taylor M. Cannon, Pema Maretich, Greatness Olaitan, Valerie Doan Phi Van, Keisuke Nagao, Atharva Sahasrabudhe, Emmanuel Vargas Paniagua, Ethan J. Frey, Ye Ji Kim, Sydney Hunt, Melissa Hummel, Sanju Mupparaju, Alan Jasanoff, B. Jill Venton, Polina Anikeeva   +16 more
wiley   +1 more source

Chromo-Natural Inflation: Natural inflation on a steep potential with classical non-Abelian gauge fields

, 2012
We propose a model for inflation consisting of an axionic scalar field coupled to a set of three non-Abelian gauge fields. Our model's novel requirement is that the gauge fields begin inflation with a rotationally invariant vacuum expectation value (VEV)
D. V. Gal’tsov, Mark Wyman, Peter Adshead   +2 more
core   +1 more source