Results 91 to 100 of about 36,694 (225)

Research Progress of Colloidal Quantum Dot Infrared Upconversion Detectors

Liaoning Shiyou Huagong Daxue xuebao
Infrared upconversion detectors are devices comprising an infrared photodetector (PD) and a visible light?emitting diode (LED) stacked in series, which directly convert invisible infrared signals into visible emission and enable imaging with CCD or CMOS ...
Ruiqi XU, Wenjia ZHOU, Zhijun NING
doaj   +1 more source

Material Strategies for Stimulation and Recording in Neural Biocomputing Platforms

Advanced Electronic Materials, EarlyView.
Material strategies enabling stimulation and recording are central to neural biocomputing systems. This review examines how electronic materials govern the encoding of inputs and decoding of outputs in living neural networks. Advances in electrical, optical, and multimodal interfaces highlight emerging design principles for biocomputing platforms ...
Sehong Kang, Junggeon Park, Aryaman Joshi, Rakid Haque, Gyu Weon Hwang, Hyunjoon Kong   +5 more
wiley   +1 more source

A 25 micron-thin microscope for imaging upconverting nanoparticles with NIR-I and NIR-II illumination. [PDF]

, 2019
Rationale: Intraoperative visualization in small surgical cavities and hard-to-access areas are essential requirements for modern, minimally invasive surgeries and demand significant miniaturization. However, current optical imagers require multiple hard-
Anwar, Mekhail, Cohen, Bruce E, Najafiaghdam, Hossein, Papageorgiou, Efthymios, Tian, Bining, Torquato, Nicole A   +5 more
core  

Machine‐Learning‐Assisted Onset‐Time Determination in Transient Luminescence Thermometry

Advanced Intelligent Discovery, EarlyView.
Artificial neural networks enable autonomous extraction of onset times from transient heating curves in luminescence thermometry. Using Ln3+‐doped upconverting nanoparticles as luminescent thermometers, we combine experimental transients with physically motivated synthetic curves to enhance data diversity and improve generalization.
David J. Sousa, Erving Ximendes, Luís D. Carlos, Carlos D. S. Brites   +3 more
wiley   +1 more source

Thermometric Based‐Microswimmers with Chemical and Optical Engines

Advanced Intelligent Systems, EarlyView.
Temperature sensing at small scales is typically performed using passive luminescent particles. Here, an alternative approach is demonstrated by integrating upconversion thermometry into self‐propelled microswimmers powered by chemical fuels or light. This strategy offers a step toward dynamic thermal sensing at the microscale, relevant to both lab‐on ...
João M. Gonçalves, Katherine Villa
wiley   +1 more source

Narrow-bandwidth solar upconversion: design principles, efficiency limits, and case studies

, 2012
We employ a detailed balance approach to model a single-junction solar cell with a realistic narrow-band, non-unity-quantum-yield upconverter. As upconverter bandwidths are increased from 0 to 0.5 eV, maximum cell efficiencies increase from the Shockley ...
Atre, Ashwin C., Briggs, Justin A., Dionne, Jennifer A.   +2 more
core   +1 more source

Photochemical upconversion in water

Chem. Commun., 2017
The current investigation achieves photochemical upconversion in pure water using combinations of water soluble Ru(ii) metal-to-ligand charge transfer (MLCT) sensitizers in concert with 9-anthracenecarboxylate (AnCO2−) and 1-pyrenecarboxylate (PyCO2−).
Karim A. El Roz, Felix N. Castellano
openaire   +3 more sources

Nanomaterial‐Mediated Near‐Infrared Photothermal Neuromodulation for Neurologic Disorders

Advanced NanoBiomed Research, EarlyView.
This review summarizes how near‐infrared light activates photothermal nanomaterials to enable noninvasive neuromodulation with high spatiotemporal precision. It elucidates the underlying mechanisms, explores targeted therapeutic applications for neurological disorders, discusses integration with optogenetics and biosensors, and addresses future ...
Ting‐Ting Zeng, Yu‐Ge Wang, Ya‐Bing Zhang, Yuan‐Xin Bai, Si‐Tong Lin, Ting‐Ting Zhu, Yan‐Bo Zhou, Wei‐Tong Pan, Pan‐Miao Liu, Jian‐Jun Yang   +9 more
wiley   +1 more source

Recent Progress on Rare-Earth-Doped Upconversion Nanomaterials for Bioassay Applications

Biosensors
Rare-earth-doped upconversion nanoparticles (UCNPs) have been widely used in biological detection due to their unique anti-Stokes shift, stable chemical properties, tunable emission wavelengths, and low biotoxicity.
Jiling Xu, Hengyuan Cao, Chenwei Wu, Ting Wang, Liheng Sun, Biao Dong   +5 more
doaj   +1 more source

A Multifunctional Nanocomposite Hydrogel for Endoscopic Tracking and Manipulation

Advanced Intelligent Systems, 2020
Herein, the fabrication of multi‐responsive and hierarchically organized nanomaterial using core‐shell SrF2 upconverting nanoparticles, doped with Yb3+, Tm3+, Nd3+ incorporated into gelatin methacryloyl matrix, is reported.
Adriana Augurio, Paolo Cortelletti, Riccardo Tognato, Anne Rios, Riccardo Levato, Jos Malda, Mauro Alini, David Eglin, Gabriele Giancane, Adolfo Speghini, Tiziano Serra   +10 more
doaj   +1 more source