scholarly journals Simultaneous retrieval of particle size and refractive index by extended interferometric particle imaging technique

2020 ◽  
Vol 28 (2) ◽  
pp. 2192 ◽  
Author(s):  
Lu Qieni ◽  
Li Zixuan ◽  
Fu Chunshuai ◽  
Liu Hao
Keyword(s):  
Particle Size ◽  
Refractive Index ◽  
Imaging Technique ◽  
Particle Imaging

scholarly journals Stability analysis of ferrofluids

2015 ◽  
Vol 1 (1) ◽  
pp. 10-13
Author(s):  
Duda Katharina ◽  
Lüdtke-Buzug Kerstin
Keyword(s):  
Particle Size ◽  
Magnetic Particle ◽  
Imaging Technique ◽  
Medical Application ◽  
Iron Core ◽  
Shell Material ◽  
Superparamagnetic Iron Oxides ◽  
Magnetic Particle Imaging ◽  
The Stability ◽  
Particle Imaging

AbstractSuperparamagnetic iron oxides (SPIOs) are used as tracer for the new imaging technique Magnetic Particle Imaging. The stability of ferrofluids for medical application has a great importance, in addition to the particle size. The shell material, which protects the iron core prior from agglomeration and sedimentation, can be degraded by various processes. Another important aspect of stability is the constant performance of magnetisation. Therefore, the measurement of the magnetisation of the particles must be controlled in order to ensure the stability of the samples.

scholarly journals Novel Immune Microlens Imaging for Detection of Antigen and Antibody

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Jiahui Liang ◽  
Xiaotian Ye ◽  
Jiang He ◽  
Jing Liu ◽  
Yaoxiong Huang ◽  
...  
Keyword(s):  
Refractive Index ◽  
Food Safety ◽  
Environmental Science ◽  
Imaging Technique ◽  
Clinical Samples ◽  
Detection Techniques ◽  
Qualitative And Quantitative ◽  
Before And After ◽  
Antibody Reaction ◽  
Antigen Antibody

Detection and analysis of antigen-antibody reaction is one of the most critical detection techniques in the fields of medicine, biology, environmental science, and food safety. Traditional and classical methods for detecting antigen and antibody encounter many problems, such as time-consuming, high cost, and low accuracy. A novel immune microsphere imaging technique by the microlens is used to test the changes of refractive index before and after antigen-antibody reaction. It can quickly perform qualitative and quantitative determination for antigen-antibody reaction without any labeling, premodification, postwashing, and expensive enzymes. Here, we feature and discuss its principle and advantages, structure of a microlens immunoassay instrument, and potential in measuring clinical samples. It is promising to be developed for application to diagnosis of clinical diseases.

Determining the refractive index of particles using glare-point imaging technique

2018 ◽  
Vol 89 (4) ◽  
pp. 043107 ◽  
Author(s):  
Rui Meng ◽  
Baozhen Ge ◽  
Qieni Lu ◽  
Xiaoxue Yu
Keyword(s):  
Refractive Index ◽  
Imaging Technique

scholarly journals Optical Nonlinear Refractive Index of Laser-Ablated Gold Nanoparticles Graphene Oxide Composite

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Amir Reza Sadrolhosseini ◽  
A. S. M. Noor ◽  
Nastaran Faraji ◽  
Alireza Kharazmi ◽  
Mohd. Adzir Mahdi
Keyword(s):  
Particle Size ◽  
Gold Nanoparticles ◽  
Refractive Index ◽  
Graphene Oxide ◽  
Gold Nanoparticle ◽  
Spherical Shape ◽  
Refractive Indices ◽  
Hydroxyl Groups ◽  
Uv Visible ◽  
Laser Ablation Technique

Gold nanoparticles were prepared in graphene oxide using laser ablation technique. The ablation times were varied from 10 to 40 minutes, and the particle size was decreased from 16.55 nm to 5.18 nm in spherical shape. The nanoparticles were capped with carboxyl and the hydroxyl groups were obtained from Fourier transform infrared spectroscopy. Furthermore, the UV-visible peak shifted with decreasing of nanoparticles size, appearing from 528 nm to 510 nm. The Z-scan technique was used to measure the nonlinear refractive indices of graphene oxide with different concentrations and a gold nanoparticle graphene oxide nanocomposite. Consequently, the optical nonlinear refractive indices of graphene oxide and gold nanoparticle graphene oxide nanocomposite were shifted from1.63×10-9 cm2/W to4.1×10-9 cm2/W and from1.85×10-9 cm2/W to5.8×10-9 cm2/W, respectively.

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