Results 101 to 110 of about 1,006,263 (269)

Advancement in Colloidal Metasurfaces: Approaches for Scalable Photonic Devices

open access: yesAdvanced Materials Interfaces, EarlyView.
This perspective explores colloidal metasurfaces composed of plasmonic and emitting nanoparticles assembled by laser interference lithography and template‐assisted self‐assembly methods. Precise design strategies achieve directional emission, low‐threshold lasing, and tunable photonic bandgaps.
Sezer Seçkin   +2 more
wiley   +1 more source

A touch of quantum field theory [PDF]

open access: yesSrinivasa Ramanujan: His Life, Legacy, and Mathematical Influence, 2024 by Krishnaswami Alladi (Editor), George E. Andrews (Editor), Bruce C. Berndt (Editor), Frank Garvan (Editor), Ken Ono (Editor)
The overlap of Srinivasa Ramanujan's work with quantum field theory is discussed. A mathematically natural axiom for euclidean quantum field theories is proposed.
arxiv  

Ward-like Operator in the comma theory [PDF]

open access: yesIJRDO-Journal of Mathematics, Vol. 5, Issue 8, 08/2019, 2019
The construction of the Ward-like operator of the interacting string field theory presented by Witten, in terms of the half-string (comma) oscillator modes, is completed.
arxiv  

Ultra‐Flexible µ‐ECoG Arrays Based on PEDOT:PSS Micropillars

open access: yesAdvanced Materials Interfaces, EarlyView.
This work demonstrates an efficient procedure for fabricating ultra‐flexible neural interfaces endowed with micropatterned microelectrodes to increase surface area and characterized by extremely low impedance values to enable high‐quality recordings. The home‐built device has been shown to record somatosensory evoked potentials in vivo with exceptional
Alice Lunghi   +6 more
wiley   +1 more source

Transforming Room Acoustics with Causality‐Driven Dual‐Function Passive Metamaterials

open access: yesAdvanced Materials Technologies, EarlyView.
This work presents an dual acoustic metamaterial for rooms that achieves excellent broadband performance for both sound absorption and sound diffusion. This is done by using causality formulations linking the absorption of the passive system to its volume, yielding an optimal surface area ratio required for excellent sound absorption and while ...
Eric Ballestero   +5 more
wiley   +1 more source

Progress in Surface Plasmon and Other Resonance Biosensors for Biomedical Applications

open access: yesAdvanced Materials Technologies, EarlyView.
This is the shortened version: Recent advancements in surface plasmon resonance and other optical resonance biosensors for biomedical applications are presented. Advanced sensing strategies are examined for the detection of diverse analytes, integration of nanomaterials and machine learning, and emerging nonplasmonic modes like guided mode resonance ...
Faten Bashar Kamal Eddin   +8 more
wiley   +1 more source

Understanding the Optoelectronic Processes in Colloidal 2D Multi‐Layered MAPbBr3 Perovskite Nanosheets: Funneling, Recombination and Self‐Trapped Excitons

open access: yesAdvanced Optical Materials, EarlyView.
Mechanisms by which excitons and charge carriers can funnel and recombine in 2D multi‐layered MAPbBr3 Ruddlesden‐Popper perovskite nanosheets are missing. This femtosecond transient absorption spectroscopy study creates a comprehensive understanding of how directed transport, exciton‐exciton annihilation, and Auger recombination occur in colloidal ...
André Niebur   +4 more
wiley   +1 more source

Sustainable decision making for chemical process systems via dimensionality reduction of many objective problems

open access: yesAIChE Journal, Volume 69, Issue 2, February 2023., 2023
Abstract Recent global events and the rise of sustainable investing have made clear that the chemical and energy industry must consider sustainability goals beyond profit maximization to remain competitive. Multiobjective optimization provides an ideal framework for analyzing sustainability tradeoffs, but when four or more objectives are considered ...
Justin M. Russell, Andrew Allman
wiley   +1 more source

The Influence of the Supporting Substrate on Single‐Particle Circular Differential Scattering of DNA Assembled Nanorod Dimers

open access: yesAdvanced Optical Materials, EarlyView.
For most microscopy measurements the sample is placed on a substrate, which causes symmetry breaking, especially relevant for chiral plasmonic nanostructures. DNA origami mediated X‐shaped AuNR dimers showing high structural purity in solution, exhibit significant diversity in lineshapes and signal intensities for their circular differential scattering
Amrita Chakraborty   +9 more
wiley   +1 more source

Bright and Stable Electrochemiluminescence by Heterobimetallic IrIII‐MI (MI = CuI, AuI) Complexes

open access: yesAdvanced Optical Materials, EarlyView.
Bright and stable electrochemiluminescence (ECL) of a new class of heterobimetallic ionic transition metal complexes is triggered in the presence of the coreactant n‐tri propylamine (TPrA) upon highly energetic electron transfer (eT). A quantum efficiency (ΦECL) up to six‐fold higher than that of benchmark tris‐(2,2′‐bipyridyl) ruthenium(II) is ...
Mattia Reato   +9 more
wiley   +1 more source

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