Results 121 to 130 of about 2,141 (287)

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

When Poor Exciton Dissociation Limits Photocurrents in Organic Solar Cells: Why Low Offset Non‐Fullerene Acceptor Blends Can't Be Efficient

Advanced Materials, EarlyView.
The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley   +1 more source

Unambiguous Parity‐Query Complexity

Random Structures & Algorithms
ABSTRACTWe give a lower bound of on the unambiguous randomized parity‐query complexity of the approximate majority problem—that is, on the lowest randomized parity‐query complexity of any function over whose value is “” if the Hamming weight of the input is at most , is “” if the weight is at least , and may be arbitrary otherwise.
openaire   +7 more sources

On the Power of Unambiguity in Alternating Machines

, 2012
Recently, the property of unambiguity in alternating Turing machines has received considerable attention in the context of analyzing globally-unique games by Aida et al. [ACRW04] and in the design of efficient protocols involving globally-unique games by
Spakowski, Holger, Tripathi, Rahul
core  

Phase Engineering of Atomically Precise Nanoclusters (APNCs) of Gold and Beyond

Advanced Materials, EarlyView.
Engineering the structural phase of materials is of paramount importance for both fundamental research and practical applications. In this Review, we summarize the recent progress in controlling the phases of atomically precise nanoclusters (APNCs) of gold, silver and copper, as well as bimetallic systems. The phase‐enabled material properties of APNCs
Yitong Wang, Avirup Sardar, Weijie Ji, Zhongyu Liu, Rongchao Jin   +4 more
wiley   +1 more source

Cybersecurity and the Slovenian Electrical Grid

Bratislava Law Review
This article examines cybersecurity risks to the Slovenian electrical grid, a critical infrastructure asset, amid escalating global threats from state-sponsored actors, geopolitical tensions, and technological vulnerabilities, including ICT ...
Tal Pavel, Luka Martin Tomažič
doaj   +1 more source

Zero-Information Protocols and Unambiguity in Arthur–Merlin Communication

, 2014
We study whether information complexity can be used to attack the long-standing open problem of proving lower bounds against Arthur–Merlin (AM) communication protocols.
Mika Göös, Thomas Watson, Toniann Pitassi, Göös, Mika, Pitassi, Toniann, Watson, Thomas   +5 more
core   +1 more source

Generating Unconventional Spin‐Orbit Torques With Patterned Phase Gradients in Tungsten Thin Films

Advanced Materials, EarlyView.
ABSTRACT A key aim in spintronics is to achieve current‐induced magnetization switching via spin‐orbit torques without external magnetic fields. For this, the focus of recent work has been on introducing controlled lateral gradients across ferromagnet/heavy‐metal devices, giving variations in thickness, composition, or interface quality.
Lauren J. Riddiford, Anne Flechsig, Shilei Ding, Emir Karadža, Niklas Kercher, Tobias Goldenberger, Elisabeth Müller, Pietro Gambardella, Laura J. Heyderman, Aleš Hrabec   +9 more
wiley   +1 more source

Valuations and Unambiguity of Languages, with Applications to Fractal Geometry

, 1994
. Valuations --- morphisms from (\Sigma ; \Delta; ) to ((0; 1); \Delta; 1) --- are a simple generalization of Bernoulli morphisms (distributions, measures) as introduced in [12, 20, 6, 4, 5, 21].
Lehrstuhl Fur Informatik Ii, Henning Fernau, Lehrstuhl Informatik Fur Ingenieure, Ludwig Staiger   +3 more
core  

Emergent Spin Supersolids in Frustrated Quantum Materials

Advanced Materials, EarlyView.
This review highlights developments in the study of spin super‐solids in frustrated quantum materials. Advanced experimental characterizations and computational studies enable a comprehensive understanding of the driving mechanisms of spin super‐solidity in various layered transition‐metal compounds, bridging materials, experiments, and theory aspects.
Yixuan Huang, Seiji Yunoki, Sadamichi Maekawa   +2 more
wiley   +1 more source