Optical manipulation of plasmonic nanoparticles using laser tweezers

2010 ◽  
Author(s):  
Lianming Tong ◽  
Vladimir D. Miljković ◽  
Mikael Käll
Keyword(s):  
Plasmonic Nanoparticles ◽  
Optical Manipulation ◽  
Laser Tweezers

Optical manipulation of plasmonic nanoparticles

2007 ◽  
Vol 89 (2) ◽  
pp. 233-239 ◽  
Author(s):  
R. Quidant ◽  
A.S. Zelenina ◽  
M. Nieto-Vesperinas
Keyword(s):  
Plasmonic Nanoparticles ◽  
Optical Manipulation

Optical manipulation of plasmonic nanoparticles, bubble formation and patterning of SERS aggregates

2010 ◽  
Vol 21 (10) ◽  
pp. 105304 ◽  
Author(s):  
Zuwei Liu ◽  
Wei Hsuan Hung ◽  
Mehmet Aykol ◽  
David Valley ◽  
Stephen B Cronin
Keyword(s):  
Bubble Formation ◽  
Plasmonic Nanoparticles ◽  
Optical Manipulation

scholarly journals Optical manipulation of the nematic director field around microspheres covered with an azo-dendrimer monolayer

2014 ◽  
Vol 22 (17) ◽  
pp. 20087 ◽  
Author(s):  
Pemika Hirankittiwong ◽  
Nattaporn Chattham ◽  
Jumras Limtrakul ◽  
Osamu Haba ◽  
Koichiro Yonetake ◽  
...  
Keyword(s):  
Optical Manipulation ◽  
Director Field ◽  
Nematic Director

scholarly journals Toxicological Profile of Plasmonic Nanoparticles in Zebrafish Model

2021 ◽  
Vol 22 (12) ◽  
pp. 6372
Author(s):  
Marta d’Amora ◽  
Vittoria Raffa ◽  
Francesco De Angelis ◽  
Francesco Tantussi
Keyword(s):  
Surface Plasmon Resonance ◽  
Adverse Effects ◽  
Physicochemical Properties ◽  
Surface Plasmon ◽  
Danio Rerio ◽  
Plasmonic Nanoparticles ◽  
Comprehensive Understanding ◽  
Zebrafish Model ◽  
Toxicological Profile ◽  
Materials Used

Plasmonic nanoparticles are increasingly employed in several fields, thanks to their unique, promising properties. In particular, these particles exhibit a surface plasmon resonance combined with outstanding absorption and scattering properties. They are also easy to synthesize and functionalize, making them ideal for nanotechnology applications. However, the physicochemical properties of these nanoparticles can make them potentially toxic, even if their bulk metallic forms are almost inert. In this review, we aim to provide a more comprehensive understanding of the potential adverse effects of plasmonic nanoparticles in zebrafish (Danio rerio) during both development and adulthood, focusing our attention on the most common materials used, i.e., gold and silver.

scholarly journals 3D printed microfluidic lab-on-a-chip device for fiber-based dual beam optical manipulation

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Haoran Wang ◽  
Anton Enders ◽  
John-Alexander Preuss ◽  
Janina Bahnemann ◽  
Alexander Heisterkamp ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Single Cells ◽  
Lab On A Chip ◽  
Cost Effective ◽  
Optical Manipulation ◽  
Hydrodynamic Focusing ◽  
Trapping Region ◽  
Dual Beam ◽  
3D Printed ◽  
On Chip

Abstract3D printing of microfluidic lab-on-a-chip devices enables rapid prototyping of robust and complex structures. In this work, we designed and fabricated a 3D printed lab-on-a-chip device for fiber-based dual beam optical manipulation. The final 3D printed chip offers three key features, such as (1) an optimized fiber channel design for precise alignment of optical fibers, (2) an optically clear window to visualize the trapping region, and (3) a sample channel which facilitates hydrodynamic focusing of samples. A square zig–zag structure incorporated in the sample channel increases the number of particles at the trapping site and focuses the cells and particles during experiments when operating the chip at low Reynolds number. To evaluate the performance of the device for optical manipulation, we implemented on-chip, fiber-based optical trapping of different-sized microscopic particles and performed trap stiffness measurements. In addition, optical stretching of MCF-7 cells was successfully accomplished for the purpose of studying the effects of a cytochalasin metabolite, pyrichalasin H, on cell elasticity. We observed distinct changes in the deformability of single cells treated with pyrichalasin H compared to untreated cells. These results demonstrate that 3D printed microfluidic lab-on-a-chip devices offer a cost-effective and customizable platform for applications in optical manipulation.

EXPRESS: Characterization of Drug Resistance in Chronic Myeloid Leukemia Cells Based on Laser Tweezers Raman Spectroscopy

2021 ◽  
pp. 000370282110245
Author(s):  
Qian Zhang ◽  
Minlu Ye ◽  
Lingyan Wang ◽  
Dongmei Jiang ◽  
Shuting Yao ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Chronic Myeloid Leukemia ◽  
Myeloid Leukemia ◽  
K562 Cells ◽  
Laser Tweezers ◽  
Label Free ◽  
Multivariate Statistical ◽  
Analytical Strategy ◽  
Specificity And Sensitivity ◽  
Acid Protein

Multidrug resistance (MDR) is highly associated with poor prognosis of chronic myeloid leukemia (CML). This work aims to explore whether the laser tweezers Raman spectroscopy (LTRS) could be practical in separating adriamycin (ADR) resistance CML cells K562/ADR from its parental cells K562, and to explore the potential mechanisms. Detection of LTRS initially reflected the spectral differences caused by chemoresistance including bands assigned to carbohydrates, amino acid, protein, lipids and nucleic acid. In addition, principal components analysis (PCA) as well as the classification and regression trees (CRT) algorithms showed that the specificity and sensitivity were above 90%. Moreover, the band data-based CRT model and receiver operating characteristic (ROC) curve further determined some important bands and band intensity ratios to be reliable indexes in discriminating K562 chemoresistance status. Finally, we highlighted three metabolism pathways correlated with chemoresistance. This work demonstrates that the label-free LTRS analysis combined with multivariate statistical analyses have great potential to be a novel analytical strategy at the single-cell level for rapid evaluation the chemoresistance status of K562 cells.

An overview of enhanced polymer solar cells with embedded plasmonic nanoparticles

2021 ◽  
Vol 141 ◽  
pp. 110726
Author(s):  
Muheeb Ahmad Alkhalayfeh ◽  
Azlan Abdul Aziz ◽  
Mohd Zamir Pakhuruddin
Keyword(s):  
Solar Cells ◽  
Polymer Solar Cells ◽  
Plasmonic Nanoparticles
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