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This study investigates (EIG) in a nanohybrid configuration involving a semiconductor quantum dot (SQD) and a core-shell bimetallic nanoparticle coated with graphene. The goal is to optimize interactions between plasmons and excitons. This is achieved by utilizing nanoparticles covered with graphene, which enhances control over surface plasmons.
View Article and Find Full Text PDFThe third harmonic (TH) signals in subwavelength scale devices have a wide range of applications, including nano-laser, microscopic imaging, sensing, and so on. However, the limited TH signal intensity still restricts practical applications due to the inherently small nonlinear coefficient in material and relatively weak confinement of the pump electromagnetic field. Here, we present the enhancement of TH signals in the isotropic Si nanosphere and the Au core/Si shell nanosphere exhibiting anapole mode excited by tightly focused radially polarized beams.
View Article and Find Full Text PDFReview of upper extremity passive joint impedance identification in people with Duchenne Muscular Dystrophy.
J Neuroeng Rehabil
January 2025
Department of BioMechanical Engineering, Delft University of Technology, Mekelweg 2, Delft, 2628 CD, South-Holland, The Netherlands.
Duchenne Muscular Dystrophy (DMD) progressively leads to loss of limb function due to muscle weakness. The incurable nature of the disease shifts the focus to improving quality of life, including assistive supports to improve arm function. Over time, the passive joint impedance (Jimp) of people with DMD increases.
View Article and Find Full Text PDFRoadmap for Designing Donor-π-Acceptor Fluorophores in UV-Vis and NIR Regions: Synthesis, Optical Properties and Applications.
Biomolecules
January 2025
Department of Chemistry, Molecular Basis of Disease, Petit Science Center, Georgia State University, 100 Piedmont Avenue SE, Atlanta, GA 30303, USA.
Donor acceptor (D-π-A) fluorophores containing a donor unit and an acceptor moiety at each end connected by a conjugated linker gained attention in the last decade due to their conjugated system and ease of tunability. These features make them good candidates for various applications such as bioimaging, photovoltaic devices and nonlinear optical materials. Upon excitation of the D-π-A fluorophore, intramolecular charge transfer (ICT) occurs, and it polarizes the molecule resulting in the 'push-pull' system.
View Article and Find Full Text PDFRefraction of the Two-Photon Multimode Field via a Three-Level Atom.
Entropy (Basel)
January 2025
Center for Nonlinear Sciences and Department of Physics, University of North Texas, Denton, TX 76203, USA.
Classically, the refractive index of a medium is due to a response on said medium from an electromagnetic field. It has been shown that a single two-level atom interacting with a single photon undergoes dispersion. The following extends that analyses to a three-level system interacting with two photons.
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