Results 81 to 90 of about 22,469 (293)

Spatiotemporal control of photochromic upconversion through interfacial energy transfer

Nature Communications
Dynamic control of multi-photon upconversion with rich and tunable emission colors is stimulating extensive interest in both fundamental research and frontier applications of lanthanide based materials.
Long Yan, Jinshu Huang, Zhengce An, Qinyuan Zhang, Bo Zhou   +4 more
doaj   +1 more source

Resonance in Er3+ Upconversion Excitation [PDF]

, 2017
Upconversion(UC)processesarediscussedontheexamplesofexcitedstateabsorption(ESA)inLaCl3: 1% Er3þ for 980nmexcitationandenergytransferupconversion(ETU)in β-NaYF4: 20%Er3þ for 1523nm excitation.Thecrucialimportanceofresonanceisdemonstratedforone-andtwo ...
Krämer, Karl
core   +3 more sources

Closing the Loop: High‐Precision 3D Photofabrication in Living Tissues

Advanced Science, EarlyView.
Writing 3D microstructures inside living tissue demands more than laser access; It demands information. Hierarchical sensing captures thermal and mechanical states across pulse‐train, voxel, and structure timescales, feeding a controller that steers the laser in real time.
Amirbahador Zeynali, Mangirdas Malinauskas, Giuseppe Chirico   +2 more
wiley   +1 more source

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

Advanced 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, Lingzhu Zi, Furong Yang, Shiji Feng, Chunzheng Wang, Yanmin Yang   +5 more
doaj   +1 more source

Bioenergetic Materials for Tissue Regeneration: Modulating Metabolism to Promote Cellular Anabolism

Advanced Science, EarlyView.
Bioenergetic materials (BEMs) modulate cellular metabolism to promote tissue regeneration. Their principal mechanisms of action include metabolic substrate supplementation, metabolic enzyme modulation, organelle transfer, electrical current regulation, redox homeostasis modulation, and oxygen tension modulation.
Yuchen He, Yuwen Wang, Jonathan F. Gong, Yiting Lei, Fei Jin, Weihong Zhu, Rocky S. Tuan, Zhong Alan Li   +7 more
wiley   +1 more source

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

Photonics
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

Transport–Reaction–Signal Coupling in Lateral Flow Assays for Next‐Generation Point‐of‐Care Diagnostics

Advanced Science, EarlyView.
Lateral flow assays are evolving into interdisciplinary, system‐level sensing platforms. Recent innovations are deconstructed through coupled phases of mass transfer, reaction, and signal transduction, revealing interdependence across porous materials, interfacial chemistry, nanolabels, readout devices, and data‐enabled analysis.
Yan Pan, Yuewei Li, Chao Mi, Zhengwen Yang, Lana McClements, Steven J. Langford, Jiayan Liao   +6 more
wiley   +1 more source

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

Excitation‐Selective Hydrochromic Upconversion in Zero‐Dimensional Metal Halides

Advanced Science, EarlyView.
Excitation wavelength dictates whether moisture speaks. In zero‐dimensional metal halides, the same humidity leaves the upconversion emission unchanged under 980 nm excitation yet triggers a distinct green‐to‐red shift under 1550 nm. This excitation‐selective hydrochromism, governed by the absorption at each wavelength, enables stimulus‐dependent ...
Joo Hyeong Han, Jeong Min Seo, Sung Woo Jang, Yong Min Park, San Ha Choi, Ji Hyeon Cha, Won Bin Im   +6 more
wiley   +1 more source

Photon upconversion tuning through energy migration in lanthanides sensitized nanoparticles

Nano 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, Jiangshan Luo, Federico Rosei   +2 more
doaj   +1 more source