Monodisperse NaYbF4 : Tm3+/NaGdF4 core/shell nanocrystals with near-infrared to near-infrared upconversion photoluminescence and magnetic resonance properties

Nanoscale ◽  
2011 ◽  
Vol 3 (5) ◽  
pp. 2003 ◽  
Author(s):  
Guanying Chen ◽  
Tymish Y. Ohulchanskyy ◽  
Wing Cheung Law ◽  
Hans Ågren ◽  
Paras N. Prasad
Keyword(s):  
Magnetic Resonance ◽  
Near Infrared ◽  
Core Shell ◽  
Resonance Properties ◽  
Upconversion Photoluminescence

The synthesis of core–shell nanowires with intense dielectric and magnetic resonance properties at microwave frequency

2019 ◽  
Vol 7 (12) ◽  
pp. 3590-3597 ◽  
Author(s):  
Kun Zhang ◽  
Fan Wu ◽  
Yingzhi Jiao ◽  
Mengxiao Sun ◽  
Yilu Xia ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Microwave Frequency ◽  
Core Shell ◽  
Resonance Properties ◽  
Shell Nanowires

Highly intense narrowband dielectric and magnetic resonance at microwave frequency.

scholarly journals Bimodal imaging using neodymium doped gadolinium fluoride nanocrystals with near-infrared to near-infrared downconversion luminescence and magnetic resonance properties

2013 ◽  
Vol 1 (41) ◽  
pp. 5702 ◽  
Author(s):  
L. Christopher Mimun ◽  
Gangadharan Ajithkumar ◽  
Madhab Pokhrel ◽  
Brian G. Yust ◽  
Zak G. Elliott ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Near Infrared ◽  
Bimodal Imaging ◽  
Resonance Properties

scholarly journals Silica-Coated Fe3O4 Nanoparticles as a Bifunctional Agent for Magnetic Resonance Imaging and ZnII Fluorescent Sensing

2021 ◽  
Vol 20 ◽  
pp. 153303382110365
Author(s):  
Lin Qiu ◽  
Shuwen Zhou ◽  
Ying Li ◽  
Wen Rui ◽  
Pengfei Cui ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Contrast Agent ◽  
Quantum Interference ◽  
Inductively Coupled Plasma ◽  
Fluorescence Emission ◽  
Mri Contrast Agent ◽  
Core Shell ◽  
Resonance Imaging

Bifunctional magnetic/fluorescent core-shell silica nanospheres (MNPs) encapsulated with the magnetic Fe3O4 core and a derivate of 8-amimoquinoline (N-(quinolin-8-yl)-2-(3-(triethoxysilyl) propylamino) acetamide) (QTEPA) into the shell were synthesized. These functional MNPs were prepared with a modified stöber method and the formed Fe3O4@SiO2-QTEPA core-shell nanocomposites are biocompatible, water-dispersible, and stable. These prepared nanoparticles were characterized by X-ray power diffraction (XRD), transmission electron microscopy (TEM), thermoelectric plasma Quad II inductively coupled plasma mass spectrometry (ICP-MS), superconducting quantum interference device (SQUID), TG/DTA thermal analyzer (TGA) and Fourier transform infrared spectroscopy (FTIR). Further application of the nanoparticles in detecting Zn2+ was confirmed by the fluorescence experiment: the nanosensor shows high selectivity and sensitivity to Zn2+ with a 22-fold fluorescence emission enhancement in the presence of 10 μM Zn2+. Moreover, the transverse relaxivity measurements show that the core-shell MNPs have T2 relaxivity (r2) of 155.05 mM−1 S−1 based on Fe concentration on the 3.0 T scanner, suggesting that the compound can be used as a negative contrast agent for MRI. Further in vivo experiments showed that these MNPs could be used as MRI contrast agent. Therefore, the new nanosensor provides the dual modality of magnetic resonance imaging and optical imaging.

scholarly journals Correction to Self-Assembly Growth of In-Rich InGaAs Core–Shell Structured Nanowires with Remarkable Near-Infrared Photoresponsivity

Nano Letters ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 2188-2188
Author(s):  
Chen Zhou ◽  
Xu-Tao Zhang ◽  
Kun Zheng ◽  
Ping-Ping Chen ◽  
Wei Lu ◽  
...  
Keyword(s):  
Self Assembly ◽  
Near Infrared ◽  
Core Shell
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