Results 81 to 90 of about 36,694 (225)

Pr3+‐Based Visible‐to‐Ultraviolet Upconversion. A minireview

open access: yesAdvanced Physics Research
Optical upconversion materials doped with lanthanides, such as Yb3+‐Er3+, Yb3+‐Ho3+, and Yb3+‐Tm3+ coped systems, have been intensively studied over the past two decades because they can convert long‐wavelength and low‐energy near‐infrared photons into ...
Leipeng Li   +5 more
doaj   +1 more source

upconversion

open access: yes, 2014
Citation: 'upconversion' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.U06574 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Therapeutic Gases in Biomedicine: Updates on Nitric Oxide and Beyond

open access: yesAdvanced Science, EarlyView.
Therapeutic gases, including NO, CO, H2S, H2, CO2, O2, and Xe, play vital roles in cellular signaling and repair. This review highlights the emerging carriers and delivery systems that enable controlled, localized gas release for diagnostic and therapeutic applications.
Syed Muntazir Andrabi   +4 more
wiley   +1 more source

The Transition of Luminescent Materials and Conductive Electrodes in Upconversion Devices to Flexible Architectures

open access: yesPhotonics
Flexible upconversion (UC) devices, owing to their unique combination of high–efficiency optical energy conversion and mechanical flexibility, have attracted increasing attention in the fields of optoelectronics, wearable devices, flexible displays, and ...
Huijuan Chen, Weibo Feng, Tianling Qin
doaj   +1 more source

Space-time coupling in the up-conversion of broadband down-converted light

open access: yes, 2014
We investigate the up-conversion process of broadband light from parametric down-conversion (PDC), focusing on the spatio-temporal spectral properties of the sum-frequency generated (SFG) radiation. We demonstrate that the incoherent component of the SFG
Brambilla, Enrico   +3 more
core   +1 more source

Nanomedicine Meets Immunotherapy: Advancing Adoptive Cell Therapy with Nanoparticles in the Treatment of Cancer with Sustainability Perspectives

open access: yesAdvanced Science, EarlyView.
This review surveys nanoparticle‐based strategies to enhance adoptive cell therapy, particularly CAR‐T cell approaches, in solid tumor treatment. It describes how nanoparticles can improve tumor immunogenicity and T‐cell infiltration while reducing toxicity, and how they enable in vivo CAR‐T cell generation.
Erica Frostegård   +19 more
wiley   +1 more source

Upconversion of Infrared Light by Graphitic Microparticles Due to Photoinduced Structural Modification

open access: yesAdvanced Photonics Research
Recent reports of upconversion and white light emission from graphitic particles warrant an explanation of the physics behind the process. A model is offered, wherein the upconversion is facilitated by photoinduced electronic structure modification ...
Rohin Sharma   +5 more
doaj   +1 more source

Photon upconversion tuning through energy migration in lanthanides sensitized nanoparticles

open access: yesNano Materials Science
Lanthanide-sensitized upconverting nanoparticles (UCNPs) are widely studied because of their unusual optical characteristics, such as large antenna-generated anti-Stokes shifts, high photostability, and narrow emission bandwidths, which can be harnessed ...
Xingwen Cheng   +2 more
doaj   +1 more source

Near-field thermal upconversion and energy transfer through a Kerr medium : Theory

open access: yes, 2017
We present an approach for achieving large Kerr $\chi^{(3)}$--mediated thermal energy transfer at the nanoscale that exploits a general coupled-mode description of triply resonant, four-wave mixing processes.
Khandekar, Chinmay   +1 more
core   +1 more source

Smart Nanotechnologies for Multimodal Neuromodulation and Brain Interfacing

open access: yesAdvanced Science, EarlyView.
Recent advances in smart nanotechnologies are expanding the toolbox for brain interfacing, from wireless neuromodulation and high‐resolution sensing to targeted delivery within the central nervous system. By combining responsive nanomaterials with bioinspired design, these platforms enable multimodal interactions with neurons and glia, while also ...
Tommaso Curiale   +6 more
wiley   +1 more source

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