Results 61 to 70 of about 107,560 (330)

Polycaprolactone-based, porous CaCO3 and Ag nanoparticle modified scaffolds as a SERS platform with molecule-specific adsorption [PDF]

, 2020
Surface-enhanced Raman scattering (SERS) is a high-performance technique allowing detection of extremely low concentrations of analytes. For such applications, fibrous polymeric matrices decorated with plasmonic metal nanostructures can be used as ...
Gorin, Dmitry, Parakhonskiy, Bogdan, Prikhozhdenko, Ekaterina, Saveleva, Mariia, Skirtach, Andre, Yashchenok, Alexey   +5 more
core   +2 more sources

Emerging 2D Materials and Their Hybrid Nanostructures for Label‐Free Optical Biosensing: Recent Progress and Outlook

Advanced Functional Materials, EarlyView.
This review highlights recent advances in label‐free optical biosensors based on 2D materials and rationally designed mixed‐dimensional nanohybrids, emphasizing their synergistic effects and novel functionalities. It also discusses multifunctional sensing platforms and the integration of machine learning for intelligent data analysis.
Xinyi Li, Yonghao Fu, Yuehe Lin, Dan Du
wiley   +1 more source

The Spectroscopic Behaviour of Rhodamine 6G in Liquid and Solid Solutions

مجلة بغداد للعلوم, 2008
Absorption, fluorescence, quantum yield and lifetime of rhodamine 6G in chloroform, methanol and dimethyl sulfoxide were measured. From a comparison of these quantities, with those for solid solutions (solid solutions are obtained by mixing constant ...
Baghdad Science Journal
doaj   +1 more source

Direct Measurement of Fast Transients by Using Boot-strapped Waveform Averaging

, 2017
An approximation to coherent sampling, also known as boot-strapped waveform averaging, is presented. The method uses digital cavities to determine the condition for coherent sampling. It can be used to increase the effective sampling rate of a repetitive
Edman, Fredrik, Karki, Khadga Jung, Olsson, Mattias   +2 more
core   +1 more source

Defects Dynamic in Photo‐Excited CeO2 and their Influence on CO2 Photoreduction

Advanced Functional Materials, EarlyView.
X‐ray photoelectron spectroscopy study under light excitation is presented to track the defect dynamic (Ce4+ to Ce3+) in CeO2. Surface enhanced Raman spectroscopy confirmed the key role of Ce3+ states in controlling charge and energy transfer across the CeO2‐dye molecule interface.
Rambabu Yalavarthi, Shashi B. Mishra, Olivier Henrotte, Emiliano Cortes   +3 more
wiley   +1 more source

Single-Molecule Fluorescence Observed with Mercury Lamp Illumination

BioTechniques, 1999
We demonstrate that it is possible to observe single fluorescent molecules using a standard fluorescence microscope with mercury lamp excitation and an inexpensive cooled charge-coupled device (CCD) camera.
M. Unger, E. Kartalov, C.-S. Chiu, H.A. Lester, S.R. Quake   +4 more
doaj   +1 more source

Hydrazide–pillar[5]arene-mediated silver nanoparticles for highly efficient reductive degradation of organic dyes

Supramolecular Materials, 2023
A new supramolecular approach toward the reductive degradation of organic dyes by hybridizing hydrophilic hydrazide-pillar[5]arene (HP5A) as surface-modifiers with silver nanoparticles (AgNPs) has been demonstrated.
Chun-Li Song, Zheng Li, Yi-Nan Zhang, Ge Zhang, Ying-Wei Yang   +4 more
doaj   +1 more source

Surface Plasmon Enhanced Photoluminescence of Rhodamine 6G on Au Nanoparticles 2D Array: Temperature Effects [PDF]

, 2014
Influence of temperature on the photoluminescence of rhodamine 6G deposited on 2D array of the gold nanoparticles was studied in the temperature range 78–278 K.
Bondarchuk, I.S., Kozachenko, V.V., Losytskyy, M.Yu., Yeshchenko, O.A.   +3 more
core  

A Single‐Metal‐Doped Nanoplatform for Ferroptosis‐Driven cGAS‐STING Pathway Activation in Hepatocellular Carcinoma Immunotherapy

Advanced Functional Materials, EarlyView.
The cGAS‐STING pathway boosts HCC antitumor immunity but lacks specific activation. Nanoplatform ZMRPF induces HCC ferroptosis via lipid ROS, releasing mtDNA. It synergizes with ZMRPF‐released Mn2⁺ to activate cGAS‐STING, amplifies antigen‐presenting cell activity, reverses HCC immunosuppression, and enables robust systemic antitumor immunity ...
Yuchen Zhang, Shuang Feng, Jie Luo, Kaige Xu, Junfeng Guo, Xingyue Zhang, Mengxue Yuan, Qiang Luo, Yu Huang, Chaoqiang Fan, Kibret Mequanint, Donghui Zhu, Malcolm Xing, Shiming Yang   +13 more
wiley   +1 more source

Bidirectional Wavelength Tuning in an Optofluidic Fiber Microcavity Laser Directed by Rhodamine 6G and Co-Dopants

Photonics
Achieving controllable wavelength tuning in optofluidic whispering gallery mode microcavity lasers is crucial for high-throughput, multi-sample, multiplexed biochemical sensing and multifunctional integrated photonic devices.
Huimin Shi, Chao Wang, Lixia Wang, Limian Ren, Junjun Wu, Xinyu Men, Pan Wang   +6 more
doaj   +1 more source