Results 111 to 120 of about 115,140,986 (222)

Large N limit of extremal non-supersymmetric black holes [PDF]

open access: yes, 1998
The large N limit of extremal non-supersymmetric Type-I five-dimensional string black holes is studied from the point of view of D-branes. We find that the agreement between the D-brane and the black hole picture is due to an asymptotic restoration of ...
Manes, J.L.   +4 more
core   +1 more source

Field‐Assisted Substrate Ionization as a Plausible Initiating Step in Enzyme Catalysis

open access: yesInternational Journal of Quantum Chemistry, Volume 126, Issue 19, October 5, 2026.
Strong, spatially heterogeneous electrostatic fields within enzyme active sites may facilitate field‐assisted electron tunneling from bound substrates, transiently generating radical‐cation character and opening alternative pathways for catalytic activation.
Marianne Kerleaux   +3 more
wiley   +1 more source

Two‐Dimensional Materials for Flexible Neuromorphic Devices: Materials, Engineering Strategies, Architectures, and Emerging Applications

open access: yesAdvanced Electronic Materials, Volume 12, Issue 17, 7 September 2026.
This review explains how atomically thin materials can combine information storage, processing, and mechanical flexibility in neuromorphic devices. It connects material properties and engineering strategies with device architecture, synaptic behavior, and performance under bending.
Junzhe Tang, Letian Dai
wiley   +1 more source

Beyond Conventional Ferroelectric Field‐Effect Transistors: Recent Advances in Materials, Architectures, and Functional Applications

open access: yesAdvanced Physics Research, Volume 5, Issue 9, September 2026.
Ferroelectric field‐effect transistors (FeFETs) are advancing beyond conventional memory transistors into multifunctional hardware platforms enabled by emerging ferroelectric materials, scalable architectures, and neuromorphic/optoelectronic functionalities. Through HfO2‐based, two‐dimensional, and organic ferroelectrics, FeFETs achieve CMOS‐compatible
Hyeseoung Lee   +3 more
wiley   +1 more source

On the Microscopic Perspective of Black Branes Thermodynamic Geometry

open access: yesEntropy, 2010
We study thermodynamic state-space geometry of the black holes in string theory and M-theory. For a large number of microstates, we analyze the intrinsic state-space geometry for (i) extremal and non-extremal black branes in string theory, (ii) multi ...
Stefano Bellucci, Bhupendra Nath Tiwari
doaj   +1 more source

Actuation Strategies for Underwater Jet‐Propelled Soft Robots

open access: yesJournal of Field Robotics, Volume 43, Issue 6, Page 3868-3892, September 2026.
ABSTRACT This review article examines jet‐propulsion mechanisms in underwater soft robotic systems, focusing exclusively on physically fabricated and experimentally validated robots. Covering research published from 2013 to 2025, this study classifies and evaluates jet‐propulsion robots based on their actuation mechanisms.
Angel Kitone   +3 more
wiley   +1 more source

Generalized Freudenthal duality for rotating extremal black holes

open access: yesJournal of High Energy Physics
Freudenthal duality (FD) is a non-linear symmetry of the Bekenstein-Hawking entropy of extremal dyonic black holes (BHs) in Maxwell-Einstein-scalar theories in four space-time dimensions realized as an anti-involutive map in the symplectic space of ...
Arghya Chattopadhyay   +2 more
doaj   +1 more source

Black hole thermodynamics from string theory [PDF]

open access: yesPhysics Letters B, 1994
In this note we consider a stringy description of black hole horizon. We start with a nonlinear sigma model defined on a two dimensional Euclidean surface with background Rindler metric. By solving the field equations, we show that to the leading order the Bekenstein-Hawking formula of black hole entropy can be produced.
openaire   +2 more sources

Differences in Siderophore Production During the Growth of Phytoplankton in Southern Ocean Incubation Experiments Under High‐ and Low‐Iron Conditions

open access: yesEnvironmental Microbiology, Volume 28, Issue 9, September 2026.
Experiments performed in the Southern Ocean under low‐ and high‐iron conditions showed that the heterotrophic bacteria community produced distinct iron‐binding compounds called siderophores, depending on the environmental conditions, despite similar bacteria communities being present in each experiment.
Randelle M. Bundy   +9 more
wiley   +1 more source

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