794 nm excited core–shell upconversion nanoparticles for optical temperature sensing

RSC Advances ◽  
2016 ◽  
Vol 6 (14) ◽  
pp. 11795-11801 ◽  
Author(s):  
Guicheng Jiang ◽  
Shaoshuai Zhou ◽  
Xiantao Wei ◽  
Yonghu Chen ◽  
Changkui Duan ◽  
...  
Keyword(s):  
Temperature Sensors ◽  
Temperature Sensing ◽  
Excitation Wavelength ◽  
Upconversion Nanoparticles ◽  
Core Shell

Nd3+ sensitized core–shell upconversion nanoparticles (UNCPs) are promising candidates for application in optical temperature sensors at a biocompatible excitation wavelength (794 nm).

Optical Temperature Sensing of Core-Shell Structured NaYF4:Yb3+, Er3+@NaYF4 Nanocrystals with Different Shell Thickness

2015 ◽  
Vol 738-739 ◽  
pp. 27-30
Author(s):  
Dong Dong Li ◽  
Qi Yue Shao ◽  
Yan Dong ◽  
Jian Qing Jiang
Keyword(s):  
Shell Thickness ◽  
Thermal Sensitivity ◽  
Upconversion Luminescence ◽  
Temperature Sensing ◽  
Upconversion Nanoparticles ◽  
Core Shell ◽  
Sensing Properties ◽  
The Core ◽  
Β Phase ◽  
Biomedical Fields

Hexagonal (β)-phase NaYF4:Yb3+, Er3+ upconversion nanoparticles (UCNPs) with and without an inert (undoped NaYF4) shell have been successfully synthesized and the effects of shell thickness on the upconversion luminescence (UCL) and temperature sensing properties were systematically investigated. It was found that the NaYF4 shell and its thickness do not affect the RHS values and thermal sensitivity, but can obviously improve the UCL intensity of NaYF4:Yb3+, Er3+ UCNPs. It implies that the core-shell structured NaYF4:Yb3+, Er3+@NaYF4 UCNPs with excellent UCL properties have great potential to be used as temperature sensing probes in biomedical fields, without considering the influences of the shell thickness on their temperature sensing properties.

scholarly journals Upconversion luminescence and temperature sensing properties of NaGd(WO4)2:Yb3+/Er3+@SiO2 core–shell nanoparticles

RSC Advances ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 3981-3989
Author(s):  
Lu Zheng ◽  
Xinyi Huang ◽  
Jiuping Zhong ◽  
Zijun Wang ◽  
Xiaoning Cheng
Keyword(s):  
Upconversion Luminescence ◽  
Silica Shell ◽  
Temperature Sensing ◽  
Upconversion Nanoparticles ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Sensing Properties ◽  
The Core ◽  
Thermal Sensing ◽  
Core Shell Nanoparticles

A shell of SiO2 with tunable thickness was uniformly coated on NaGd(WO4)2:Yb3+/Er3+ core upconversion nanoparticles (UCNPs). The effects of the silica shell on UC luminescence and thermal sensing properties of the core–shell UCNPs were investigated.

Optical temperature sensing with minimized heating effect using core–shell upconversion nanoparticles

RSC Advances ◽  
2016 ◽  
Vol 6 (26) ◽  
pp. 21540-21545 ◽  
Author(s):  
Weibo Chen ◽  
Chengjian Shi ◽  
Taojunyu Tao ◽  
Meixi Ji ◽  
Shuhong Zheng ◽  
...  
Keyword(s):  
High Sensitivity ◽  
Temperature Sensing ◽  
Upconversion Nanoparticles ◽  
Core Shell ◽  
Heating Effect ◽  
Temperature Range

Core–shell NaYF4:Yb3+, Tm3+@NaYF4:Yb3+, Nd3+ nanosystem for temperature sensing with a minimized heating effect, which demonstrates a high sensitivity of up to 1.55% K−1 at a temperature range between 313 and 553 K.

Engineering water-tolerant core/shell upconversion nanoparticles for optical temperature sensing

2017 ◽  
Vol 42 (13) ◽  
pp. 2451 ◽  
Author(s):  
Masfer H. Alkahtani ◽  
Carmen L. Gomes ◽  
Philip R. Hemmer
Keyword(s):  
Temperature Sensing ◽  
Upconversion Nanoparticles ◽  
Core Shell

Nanocomposites of Au Nanorods and Core–Shell NaGdF4:Yb3+,Er3+@NaYF4 Upconversion Nanoparticles for Temperature Sensing

2020 ◽  
Vol 3 (10) ◽  
pp. 9679-9685 ◽  
Author(s):  
Junshan Hu ◽  
Ruonan Wang ◽  
Rangrang Fan ◽  
Fengyi Wang ◽  
Huiyu Xiong ◽  
...  
Keyword(s):  
Temperature Sensing ◽  
Upconversion Nanoparticles ◽  
Core Shell ◽  
Au Nanorods

scholarly journals Engineering Red-Enhanced and Biocompatible Upconversion Nanoparticles

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 284
Author(s):  
Masfer Alkahtani ◽  
Najla Alsofyani ◽  
Anfal Alfahd ◽  
Anas A. Almuqhim ◽  
Fahad A. Almughem ◽  
...  
Keyword(s):  
Optical Properties ◽  
Fluorescent Probes ◽  
Living Cell ◽  
Excitation Wavelength ◽  
Upconversion Nanoparticles ◽  
Core Shell ◽  
Cell Models ◽  
Ion Concentrations ◽  
Fluorescent Markers ◽  
Surface Quenching

The exceptional optical properties of lanthanide-doped upconversion nanoparticles (UCNPs) make them among the best fluorescent markers for many promising bioapplications. To fully utilize the unique advantages of the UCNPs for bioapplications, recent significant efforts have been put into improving the brightness of small UCNPs crystals by optimizing dopant concentrations and utilizing the addition of inert shells to avoid surface quenching effects. In this work, we engineered bright and small size upconversion nanoparticles in a core–shell–shell (CSS) structure. The emission of the synthesized CSS UCNPs is enhanced in the biological transparency window under biocompatible excitation wavelength by optimizing dopant ion concentrations. We also investigated the biosafety of the synthesized CSS UCNP particles in living cell models to ensure bright and non-toxic fluorescent probes for promising bioapplications.

Upconversion nanoparticle–Ag@C@Ag composite films for rapid temperature sensing

CrystEngComm ◽  
2021 ◽  
Author(s):  
Hu Huang ◽  
Lingqiong Wu ◽  
Shengbin Cheng ◽  
Xiaofeng Wu ◽  
Shiping Zhan ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Ag Nanoparticles ◽  
Response Rate ◽  
Composite Films ◽  
Temperature Sensing ◽  
Upconversion Nanoparticles ◽  
Rapid Temperature

The response rate of optical temperature sensing of upconversion nanoparticles is significantly improved by coupling with Ag@C@Ag nanoparticles which have excellent thermal conductivity.

Optical temperature sensing based on upconversion nanoparticles with enhanced sensitivity via dielectric superlensing modulation

2021 ◽  
Vol 56 (17) ◽  
pp. 10438-10448
Author(s):  
Mei Lin ◽  
Shengbin Cheng ◽  
Xiaofeng Wu ◽  
Shiping Zhan ◽  
Yunxin Liu
Keyword(s):  
Temperature Sensing ◽  
Upconversion Nanoparticles ◽  
Enhanced Sensitivity

Extending the temperature sensing range using Eu3+ luminescence up to 865 K in a single crystal of EuPO4

2019 ◽  
Vol 21 (29) ◽  
pp. 16329-16336 ◽  
Author(s):  
Suchinder K. Sharma ◽  
Thomas Köhler ◽  
Jan Beyer ◽  
Margret Fuchs ◽  
Richard Gloaguen ◽  
...  
Keyword(s):  
Single Crystal ◽  
Temperature Sensing ◽  
Single Crystal Sample ◽  
Coupling Scheme ◽  
Excitation Wavelength ◽  
Crystal Sample ◽  
Sensing Range

Extending the temperature sensing range up to 865 K using an appropriate choice of excitation wavelength and coupling scheme in a single crystal sample of EuPO4.

Decoration of upconversion nanoparticles@mSiO2 core–shell nanostructures with CdS nanocrystals for excellent infrared light triggered photocatalysis

RSC Advances ◽  
2016 ◽  
Vol 6 (59) ◽  
pp. 54241-54248 ◽  
Author(s):  
Yao-Wu Li ◽  
Liang Dong ◽  
Chen-Xi Huang ◽  
Yan-Chuan Guo ◽  
Xian-Zhu Yang ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Photocatalytic Degradation ◽  
Infrared Light ◽  
Upconversion Nanoparticles ◽  
Core Shell ◽  
Cds Nanocrystals ◽  
Shell Nanostructures ◽  
Cds Nanostructures

Upconversion nanoparticles@mesoporous silica (mSiO2)/CdS nanostructures have been designed and fabricated for infrared light triggered photocatalytic degradation towards RhB dye.

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