Results 61 to 70 of about 6,676 (242)

Longitudinal evaluation of demyelinated lesions in a multiple sclerosis model using ultrashort echo time magnetization transfer (UTE-MT) imaging

NeuroImage, 2020
Alterations in myelin integrity are involved in many neurological disorders and demyelinating diseases, such as multiple sclerosis (MS). Although magnetic resonance imaging (MRI) is the gold standard method to diagnose and monitor MS patients, clinically
Caroline Guglielmetti, Tanguy Boucneau, Peng Cao, Annemie Van der Linden, Peder E.Z. Larson, Myriam M. Chaumeil   +5 more
doaj   +1 more source

In vivo UTE-MRI reveals positive effects of raloxifene on skeletal bound water in skeletally mature beagle dogs [PDF]

, 2015
Raloxifene positively affects mechanical properties of the bone matrix in part through modification of skeletal bound water. The goal of this study was to determine if raloxifene induced alterations in skeletal hydration could be measured in vivo using ...
Allen, Matthew R., Burr, David B., Hutchins, Gary D., Jiang, Lei, Lin, Chen, McCarthy, Brian P., Newman, Christopher L., Persohn, Scott, Riley, Amanda A., Territo, Paul R.   +9 more
core   +1 more source

Conductive Bonding and System Architectures for High‐Performance Flexible Electronics

Advanced Functional Materials, EarlyView.
This review outlines bonding technologies and structural design strategies that support high‐performance flexible and stretchable electronics. Bonding approaches such as surface‐activated bonding and anisotropic conductive films, together with system‐level architectures including buffer layers and island‐bridge structures, possess distinct mechanical ...
Kazuma Nakajima, Kenjiro Fukuda
wiley   +1 more source

Generation of coherent terahertz pulses in Ruby at room temperature [PDF]

, 2006
We have shown that a coherently driven solid state medium can potentially produce strong controllable short pulses of THz radiation. The high efficiency of the technique is based on excitation of maximal THz coherence by applying resonant optical pulses ...
A. A. Andronov, A. A. Kaplyanskii, D. F. Nelson, E. Arimondo, E. Gornik, Elena Kuznetsova, G. M. Zverev, G. W. Burdick, M. O. Scully, Marlan O. Scully, N. G. Kalugin, N. Retzer, Nikolai G. Kalugin, O. Kocharovskaya, O. Kocharovskaya, Olga Kocharovskaya, Roman Kolesov, S. A. Belozerov, T. Yajima, Yuri Rostovtsev   +19 more
core   +3 more sources

Laser Engineering of HfN‐Based Nanoparticles for Safe NIR‐I Photothermal and X‐ray Enhancing Cancer Therapies

Advanced Functional Materials, EarlyView.
In this study, we produced HfN‐based nanoparticles via femtosecond laser ablation in acetone. The nanoparticles exhibit a red‐shifted plasmonic resonance in the NIR‐I window, colloidal stability after coating with polyethyleneglycol, and excellent biocompatibility. The photothermal and X‐ray sensitization therapeutic effects were demonstrated for tumor
Julia S. Babkova, Ivan V. Zelepukin, Lyubov V. Gorelik, Anton L. Popov, Andrei I. Pastukhov, Gleb V. Tikhonowski, Maxim S. Savinov, Danil D. Kolmanovich, Nikita A. Pivovarov, Alina Yu. Kapitannikova, Anton A. Popov, Anna S. Sogomonyan, Vsevolod A. Skribitsky, Aziz B. Mirkasymov, Andrei V. Kabashin, Sergey M. Deyev   +15 more
wiley   +1 more source

Heptazine‐Assisted Multi‐Resonance TADF Emitters With Fast Reverse Intersystem Crossing for Efficient Solution‐Processed OLEDs

Advanced Materials, EarlyView.
Heptazine‐assisted MR‐TADF emitters enable narrowband yellow emission with high efficiency at high luminance in solution‐processed OLEDs. In doped films, HAP‐3CzBN achieves a record‐fast kRISC of 1.19 × 106 s−1. The optimized HAP‐3CzBN devices deliver 15.5% EQEmax with negligible roll‐off at 1000 cd m−2, 11.2% at 10,000 cd m−2, and a benchmark 20.3 ...
Changfeng Si, Katrina Bergmann, Kunping Guo, Gert‐Jan A. H. Wetzelaer, Paul W. M. Blom, Zachary M. Hudson   +5 more
wiley   +1 more source

Femtosecond transition-state dynamics [PDF]

, 1991
This article presents the progress made in probing femtosecond transition–state dynamics of elementary reactions. Experiments demonstrating the dynamics in systems characterized by a transition region and by a saddle-point transition state are reported ...
Zewail, Ahmed H.
core   +1 more source

Resistive Heating for Inducing Localized Crystal Growth in Organic Thin Film Devices

Advanced Materials Technologies, EarlyView.
Rubrene thin films are promising for organic optoelectronics due to high hole mobility. However, uncontrolled crystallization and grain boundaries from standard thermal processing hinder lateral device scalability. This work presents femtosecond‐laser micromachining and patterned resistive heating to induce localized, deterministic crystallization ...
Anna‐Lena Hofmann, Roozbeh Irandoost, Moritz Nützel, Tobias Antrack, Wooik Jang, Markas Sudzius, Hrisheekesh Thachoth Chandran, Gang Li, Johannes Benduhn, Karl Leo   +9 more
wiley   +1 more source

Super High Contrast USPIO-Enhanced Cerebrovascular Angiography Using Ultrashort Time-to-Echo MRI

International Journal of Biomedical Imaging
Background. Ferumoxytol (Ferahame, AMAG Pharmaceuticals, Waltham, MA) is increasingly used off-label as an MR contrast agent due to its relaxivity and safety profiles. However, its potent T2∗ relaxivity limits achievable T1-weighted positive contrast and
Liam Timms, Tianyi Zhou, Ju Qiao, Codi Gharagouzloo, Vishala Mishra, Rita Maria Lahoud, John W. Chen, Mukesh Harisinghani, Srinivas Sridhar   +8 more
doaj   +1 more source

Cardiac 4D phase-contrast CMR at 9.4 T using self-gated ultra-short echo time (UTE) imaging

Journal of Cardiovascular Magnetic Resonance, 2017
Background Time resolved 4D phase contrast (PC) cardiovascular magnetic resonance (CMR) in mice is challenging due to long scan times, small animal ECG-gating and the rapid blood flow and cardiac motion of small rodents.
M. Krämer, A. G. Motaal, K-H. Herrmann, B. Löffler, J. R. Reichenbach, G. J. Strijkers, V. Hoerr   +6 more
doaj   +1 more source