Results 181 to 190 of about 525,806 (272)

Characterization of the Pore Environments in Covalent Organic Frameworks by Dynamic Spin Probe Exchange

Small, EarlyView.
Covalent organic frameworks (COFs) with alkyl or triethylene glycol pore linings are probed with water‐dissolved nitroxide radicals using CW EPR spectroscopy. Adsorption affinity, local polarity, and radical concentration inside the pores are quantified, revealing hydrogen bonding, dipolar, and π‐π interactions that govern guest binding, which ...
Sebastian Michler, Simona Bassoli, Luisa Voigt, Makhily Diaby, Dariush Hinderberger, Frederik Haase   +5 more
wiley   +1 more source

Polarity‐engineered Sn‐Ti cluster photoresists for sub‐10‐nm high‐resolution lithography

Smart Molecules, EarlyView.
Enhancing the polarity of clusters can optimize their patterning performance; inspired by this strategy, we designed polarity‐enhanced Sn‐Ti oxo clusters via ligand engineering. The optimal TS‐3 with exposure‐induced polarity switch achieves 8 nm patterning in lithography and achieves simultaneous improvement in resolution and patterning performance ...
Daohan Wang, Runfeng Xu, Min Zhang, Xiaofeng Gong, Wenzheng Li, Danhong Zhou, Jun Zhao, Huie Zhu, Zhan Lu, Pengzhong Chen, Xiaojun Peng   +10 more
wiley   +1 more source

Fluorinated copolymer resists for high‐resolution negative‐tone lithography: Preparation and patterning performance

Smart Molecules, EarlyView.
Electron‐beam induced C–F cleavage in –CF3 generates F−, which abstracts a proton to form the acid that catalyzes tBMA deprotection during post‐exposure baking. This self‐sensitization mechanism enables the precise formation of high‐resolution negative‐tone patterns with enhanced sensitivity and resolution.
Yuting Tang, Wenzheng Li, Xinyan Huang, Min Zhang, Han Han, Jialong Zhang, Qinyu Luo, Jiangli Fan, Pengzhong Chen, Xiaojun Peng   +9 more
wiley   +1 more source

SHARPER Reaction Monitoring: Generation of a Narrow Linewidth NMR Singlet, without X-Pulses, in an Inhomogeneous Magnetic Field. [PDF]

Anal Chem, 2017
Jones AB, Lloyd-Jones GC, Uhrín D.
europepmc   +1 more source

Resonance‐Enhanced Four‐Wave Mixing Imaging for Mapping Defect Regions in Vanadium‐Doped WS2 Monolayers

Small Methods, EarlyView.
Resonant four‐wave mixing (FWM) microscopy reveals a spatial modulation of the third‐order nonlinear optical response in vanadium‐doped WS2 monolayers. This robust nonlinear contrast technique tracks the preferential accumulation of vanadium dopants along the structural bisection lines of the synthesized flakes.
Felipe Menescal, Frederico B. Sousa, Mingzu Liu, Ana P. M. Barboza, Igor F. Curvelo, Matheus J. S. Matos, Da Zhou, Bernardo R. A. Neves, Helio Chacham, Mauricio Terrones, Bruno R. Carvalho, Leandro M. Malard   +11 more
wiley   +1 more source

Impact of monomer contamination of isopropanol during post‐rinsing on the accuracy of dental models fabricated by vat photopolymerization

Journal of Prosthodontics, EarlyView.
Abstract Purpose The aim of this study was to investigate the impact of an increasing level of monomer contamination of isopropanol (isopropyl alcohol [IPA]) during post‐rinsing on the dimensional stability of test samples produced by vat photopolymerization.
Florian Flierl, Benedikt C. Spies, Severin Rothlauf, Kirstin Vach, Ralf J. Kohal, Jörg Lüchtenborg   +5 more
wiley   +1 more source

Short Echo‐Time Spiral MRSI Versus Single‐Voxel Spectroscopy in the Human Brain at 3 Tesla With Semi‐LASER Localization

Magnetic Resonance in Medicine, Volume 96, Issue 4, Page 1524-1533, October 2026.
ABSTRACT Purpose Magnetic resonance spectroscopy techniques are widely used to non‐invasively study brain metabolism. Despite advances in magnetic resonance spectroscopic imaging (MRSI), there is a notable absence of research on comparing fast non‐Cartesian MRSI with single‐voxel spectroscopy (SVS), limiting our understanding of its performance and ...
Young Woo Park, Isaac M. Adanyeguh, Pierre‐Gilles Henry, Dinesh K. Deelchand   +3 more
wiley   +1 more source

Double DANTE‐PRESS: Development of a 1H‐MRS Multifrequency‐Selective Sequence for Simultaneous In Vivo Quantification of Glutathione and Glutamate at 7 Tesla

NMR in Biomedicine, Volume 39, Issue 10, October 2026.
A single‐shot, multifrequency‐selective 1H‐MRS technique known as double Delays‐Alternating‐Nutation‐Tailored‐Excitation‐Point RESolved‐Spectroscopy (DANTE‐PRESS) can selectively refocus two frequencies of interest and simplify spectral modeling. ABSTRACT Glutamate and glutathione share a complex and tightly regulated cycle where imbalances can be a ...
Kesavi Kanagasabai, Omer Oran, Lena Palaniyappan, Jean Théberge   +3 more
wiley   +1 more source

Ultra-Broadband Metasurface Absorber Enabled by a Central-Bar-Coupled Split-Disk Dimer. [PDF]

Biosensors (Basel)
Panciera C, Brunetti G, Ciminelli C, Butt MA.   +3 more
europepmc   +1 more source

Challenges and Opportunities for Layered Double Perovskite Solar Cells

Solar RRL, Volume 10, Issue 17, 15 September 2026.
Layered lead‐free double perovskites suffer from intrinsic and extrinsic limitations that hinder high photovoltaic performance. This review identifies key challenges, including unfavorable band structures, strong self‐trapping, defect‐induced recombination, processing‐induced inhomogeneity, and device‐level mismatches.
Krishnaiah Mokurala, Marija Mrkonjić, Ceylan Doyranli, Jovana V. Milić, Mohammad Reza Golobostanfard   +4 more
wiley   +1 more source