Results 51 to 60 of about 6,769 (235)

Four wave mixing spectroscopy of quantum dot molecules

, 2007
We study theoretically the nonlinear four wave mixing (FWM) response of an ensemble of coupled pairs of quantum dots (quantum dot molecules). We discuss the shape of the FWM echo signal depending on the parameters of the ensemble: the statistics of ...
Machnikowski, P., Sitek, A.
core   +1 more source

Effective Detection of Nafion^®-Based Theranostic Nanocapsules Through ¹⁹F Ultra-Short Echo Time MRI

Nanomaterials, 2020
The application of the Three-Dimensional Ultra-Short Echo Time (3D UTE)pulse sequence at a high magnetic field for visualization of the distribution of 19F loaded theranostic core-shell nanocapsules with Nafion® (1,1,2,2-tetrafluoroethene; 1,1,2,2 ...
Natalia Łopuszyńska, Krzysztof Szczepanowicz, Krzysztof Jasiński, Piotr Warszyński, Władysław P. Węglarz   +4 more
doaj   +1 more source

Evaluating metabolites in patients with major depressive disorder who received mindfulness-based cognitive therapy and healthy controls using short echo MRSI at 7 Tesla. [PDF]

, 2016
ObjectivesOur aim was to evaluate differences in metabolite levels between unmedicated patients with major depressive disorder (MDD) and healthy controls, to assess changes in metabolites in patients after they completed an 8-week course of mindfulness ...
Eisendrath, Stuart, Gillung, Erin, Jakary, Angela, Li, Yan, Luks, Tracy, Mukherjee, Pratik, Nelson, Sarah J   +6 more
core   +3 more sources

Cardiovascular ultrashort echo time to map fibrosis—promises and challenges

The British Journal of Radiology, 2019
Increased collagen, or fibrosis, is an important marker of disease and may improve identification of patients at risk. In addition, fibrosis imaging may play an increasing role in guiding therapy and monitoring its effectiveness. MRI is the most frequently used modality to detect, visualize and quantify fibrosis non-invasively.
Joanne D Schuijf, Bharath Ambale-Venkatesh, Yoshimori Kassai, Yoko Kato, Larry Kasuboski, Hideki Ota, Shelton D Caruthers, João AC Lima   +7 more
openaire   +3 more sources

Ultrashort-T2* mapping at 7 tesla using an optimized pointwise encoding time reduction with radial acquisition (PETRA) sequence at standard and extended echo times.

PLoS ONE
Zero echo time (ZTE) sequences capture signal from tissues with extremely short T2* and are useful for qualitative and quantitative imaging of musculoskeletal tissues' ultrashort-T2* components. One such sequence is Pointwise Encoding Time Reduction with
Carly A Lockard, Bruce M Damon, Hacene Serrai   +2 more
doaj   +1 more source

Laser‐Assisted Processing and Modification of Bioactive Glasses: A Review

Advanced Healthcare Materials, EarlyView.
Laser technologies provide powerful tools to process and transform bioactive glasses for advanced biomedical applications. This review discusses laser‐matter interaction mechanisms, laser surface engineering, and laser‐assisted fabrication of scaffolds and nanofibers.
Antonio Riveiro, Mario González‐Quintas, Mónica Fernández‐Arias, Jesús del Val, Félix Quintero, Rafael Comesaña, Fernando Lusquiños, Julian R. Jones, Juan Pou   +8 more
wiley   +1 more source

A Data Driven Review of In Vitro Electrical and Mechanical Stimulation for Post‐Acute Phase Wound Healing

Advanced Healthcare Materials, EarlyView.
This review examines how in vitro electrical and mechanical stimulation modulates wound healing in fibroblasts and keratinocytes. Analyzing over 560 experimental data points, we relate stimulation parameters to proliferation and migration outcomes, evaluate platform designs, and highlight the need for multi‐parameter optimization to advance targeted ...
Matthew K. Burgess, Ellen F. Marsh, Veronica M. Lucian, Malavika Nair   +3 more
wiley   +1 more source

Bi-Exponential 3D UTE-T1ρ Relaxation Mapping of Ex Vivo Human Knee Patellar Tendon at 3T

Bioengineering
Introduction: The objective of this study was to assess the bi-exponential relaxation times and fractions of the short and long components of the human patellar tendon ex vivo using three-dimensional ultrashort echo time T1ρ (3D UTE-T1ρ) imaging ...
Bhavsimran Singh Malhi, Dina Moazamian, Soo Hyun Shin, Jiyo S. Athertya, Livia Silva, Saeed Jerban, Hyungseok Jang, Eric Chang, Yajun Ma, Michael Carl, Jiang Du   +10 more
doaj   +1 more source

Molecular alignment echoes probing collision-induced rotational-speed changes

Physical Review Research, 2020
We show that the decays with pressure of the rotational alignment echoes induced in N_{2}O-He gas mixtures by two ultrashort laser pulses with various delays show detailed information about collision-induced changes of the rotational speed of the ...
J.-M. Hartmann, J. Ma, T. Delahaye, F. Billard, E. Hertz, J. Wu, B. Lavorel, C. Boulet, O. Faucher   +8 more
doaj   +1 more source

Pulsed Laser‐Assisted Phase Engineering of Multimetallic Colloidal Nanocrystals With Complex Compositions

Advanced Materials, EarlyView.
The engineering of colloidal nanocrystals with complex compositions has emerged as a highly active area of research within nanomaterials science. This review covers key aspects of colloidal solid‐solution nanocrystal formation using pulsed laser irradiation.
Marina T. Candela, Sergio Triviño‐Sánchez, Andrés Guerrero‐Martínez, Luis M. Liz‐Marzán, Guillermo González‐Rubio   +4 more
wiley   +1 more source