Results 61 to 70 of about 130,740 (286)

Near‐infrared fluorophores with absolute aggregation‐caused quenching and negligible fluorescence re‐illumination for in vivo bioimaging of nanocarriers

Aggregate, 2023
Environment‐responsive fluorophores with aggregation‐caused quenching (ACQ) properties have been applied to track nanocarriers with reduced artefacts caused by unbound or free fluorophores but suffer from incomplete fluorescence quenching and significant
Yifan Cai, Xin Ji, Yunsen Zhang, Chang Liu, Zichen Zhang, Yongjiu Lv, Xiaochun Dong, Haisheng He, Jianping Qi, Yi Lu, Defang Ouyang, Weili Zhao, Wei Wu   +12 more
doaj   +1 more source

Color Rendering Index over 95 Achieved by Using Light Recycling Process Based on Hybrid Remote-Type Red Quantum-Dot Components Applied to Conventional LED Lighting Devices

Nanomaterials, 2023
Red color conversion materials have often been used in conventional white LEDs (light-emitting diodes) to enhance the insufficient deep-red component and thus improve the color-rendering property. Quantum dots (QDs) are one of the candidates for this due
Eunki Baek, Boseong Kim, Sohee Kim, Juyeon Song, Jaehyeong Yoo, Sung Min Park, Jong-Min Lee, Jae-Hyeon Ko   +7 more
doaj   +1 more source

Metal-insulator transition in YHx: scaling of the sub-THz conductivity

, 2004
The established scaling laws of the conductivity with temperature and doping are strong indications for the quantum nature of the metal-insulator transition in YH$_x$. Here we report the first results on the frequency scaling of the conductivity. Samples
A. F. Th. Hoekstra, A. V. Pronin, H. B. Brom, I. G. Romijn, S. Sachdev   +4 more
core   +1 more source

Real applications of quantum imaging [PDF]

, 2016
In the last years the possibility of creating and manipulating quantum states of light has paved the way to the development of new technologies exploiting peculiar properties of quantum states, as quantum information, quantum metrology & sensing, quantum
Genovese, Marco
core   +2 more sources

Secure communication via quantum illumination [PDF]

Quantum Information Processing, 2013
In the quantum illumination protocol for secure communication, Alice prepares entangled signal and idler beams via spontaneous parametric downconversion. She sends the signal beam to Bob, while retaining the idler. Bob imposes message modulation on the beam he receives from Alice, amplifies it, and sends it back to her.
Shapiro, Jeffrey H., Zhang, Zheshen, Wong, Franco N. C.   +2 more
openaire   +3 more sources

Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)

Advanced Functional Materials, EarlyView.
Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao, Christian Weinberger, Jakob Steube, Matthias Bauer, Martin Brehm, Michael Tiemann   +5 more
wiley   +1 more source

Optical engineering of infrared PbS CQD photovoltaic cells for wireless optical power transfer systems

Frontiers of Optoelectronics, 2023
Infrared photovoltaic cells (IRPCs) have attracted considerable attention for potential applications in wireless optical power transfer (WOPT) systems. As an efficient fiber-integrated WOPT system typically uses a 1550 nm laser beam, it is essential to ...
Mengqiong Zhu, Yuanbo Zhang, Shuaicheng Lu, Zijun Wang, Junbing Zhou, Wenkai Ma, Ruinan Zhu, Guanyuan Chen, Jianbing Zhang, Liang Gao, Jiancan Yu, Pingqi Gao, Jiang Tang   +12 more
doaj   +1 more source

Quantifying the source of enhancement in experimental continuous variable quantum illumination

, 2014
A quantum illumination protocol exploits correlated light beams to enhance the probability of detection of a partially reflecting object lying in a very noisy background.
Adesso, Gerardo, Berchera, Ivano Ruo, Degiovanni, Ivo P., Genovese, Marco, Olivares, Stefano, Paris, Matteo G. A., Ragy, Sammy   +6 more
core   +1 more source

Photoswitching Conduction in Framework Materials

Advanced Functional Materials, EarlyView.
This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez, Stefan Hecht, Wolfgang Wenzel, Lars Heinke, Mariana Kozlowska   +4 more
wiley   +1 more source

Supraparticles Composed of Graphitic Carbon Nitride Nanoparticles and Silica‐Supported Horseradish Peroxidase as Customizable Hybrid Catalysts for Photo‐Biocatalytic Cascade Reactions in Continuous Flow

Advanced Functional Materials, EarlyView.
Herein presented supraparticles combine the nanoparticulate photocatalyst graphitic carbon nitride with the enzyme horseradish peroxidase, which is immobilized on silica nanoparticles. In an optimized compatibility range, both catalysts operate effectively within the hybrid supraparticles and catalyze a cascade reaction consisting of the photocatalytic
Bettina Herbig, Egzon Cermjani, Doris Hanselmann, Johannes Prieschl, Angelika Schmitt, Michael S. Moritz, Christian Papp, Greta Nölke, Stefano Di Fiore, Christoph Deckers, Thomas H. Rehm, Susanne Wintzheimer   +11 more
wiley   +1 more source