Multiphoton imaging of quantum dot bioconjugates in cultured cells following Nd:YLF laser excitation

2005 ◽  
Author(s):  
Elba E. Serrano ◽  
V. B. Knight
Keyword(s):  
Quantum Dot ◽  
Laser Excitation ◽  
Cultured Cells ◽  
Multiphoton Imaging

Light transfer from quantum-dot-doped polymer nanowires to silver nanowires

RSC Advances ◽  
2015 ◽  
Vol 5 (75) ◽  
pp. 60770-60774 ◽  
Author(s):  
Xianguang Yang ◽  
Dinghua Bao ◽  
Baojun Li
Keyword(s):  
Quantum Dot ◽  
Laser Excitation ◽  
Silver Nanowires ◽  
Polymer Nanowires ◽  
Doped Polymer ◽  
Light Transfer ◽  
532 Nm

The plasmons of two silver nanowires are simultaneously excited by photoluminescence of the quantum-dot-doped nanowire under 532 nm laser excitation.

Study of Cell Metabolic Activities Using Fluorescence Microscopy

2003 ◽  
Author(s):  
Dawn M. Sabados ◽  
Lisa X. Xu ◽  
Jay P. Gore
Keyword(s):  
Endothelial Cells ◽  
Laser Excitation ◽  
Cultured Cells ◽  
Tissue Level ◽  
Excitation Wavelength ◽  
Level Laser ◽  
Comparison Results ◽  
Normal Rat ◽  
Breast Cells ◽  
Metabolic Activities

In the present study, cultured normal rat microvessel endothelial cells are first used to explore the feasibility of studying the cell metabolic activities by detecting autofluorescence intensities. A mercury lamp is used to induce autofluorescence emissions in cells. Under an excitation wavelength of 360nm, the emissions peak at 470 nm corresponds with the autofluorescence signature of NAD(P)H, the concentration of which has been linked to the metabolic rate of the cell. A relation between the emission intensity and the NAD(P)H concentration is established. Based upon the results and observations of the endothelial cells, a protocol is developed for studying the autofluorescence of other cultured cells. It has been long known that cancer cells divide much more rapidly than normal cells depending on the degree of the tumor malignancy. The differences in metabolic rates of normal and cancerous breast cells are explored as they relate to autofluorescence emissions at different wavelengths and intensities. The comparison results can be used as a guideline to determine whether cells are cancerous. At a tissue level, laser excitation is probably needed to obtain measurable autofluorescence signals. The potential of autofluorescence measurement as a breast cancer diagnostic tool is discussed.

The influence of continuous vs. pulsed laser excitation on single quantum dot photophysics

2014 ◽  
Vol 16 (47) ◽  
pp. 25723-25728 ◽  
Author(s):  
Julie A. Smyder ◽  
Amanda R. Amori ◽  
Michael Y. Odoi ◽  
Harry A. Stern ◽  
Jeffrey J. Peterson ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Laser Excitation ◽  
Pulsed Laser ◽  
Single Quantum ◽  
Single Quantum Dots ◽  
Single Quantum Dot ◽  
Similarities And Differences ◽  
Continuous Excitation

Important similarities and differences between pulsed and continuous excitation on the fluorescence dynamics of single quantum dots were discovered.

scholarly journals Effects of resonant-laser excitation on the emission properties in a single quantum dot

Optica ◽  
2018 ◽  
Vol 5 (4) ◽  
pp. 354 ◽  
Author(s):  
O. Gazzano ◽  
T. Huber ◽  
V. Loo ◽  
S. Polyakov ◽  
E. B. Flagg ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Laser Excitation ◽  
Single Quantum ◽  
Emission Properties ◽  
Resonant Laser ◽  
Single Quantum Dot

scholarly journals Dynamic Nuclear Spin Polarization in the Resonant Laser Excitation of an InGaAs Quantum Dot

2012 ◽  
Vol 108 (19) ◽  
Author(s):  
A. Högele ◽  
M. Kroner ◽  
C. Latta ◽  
M. Claassen ◽  
I. Carusotto ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Spin Polarization ◽  
Nuclear Spin ◽  
Laser Excitation ◽  
Nuclear Spin Polarization ◽  
Resonant Laser

scholarly journals Confluence of resonant laser excitation and bidirectional quantum-dot nuclear-spin polarization

2009 ◽  
Vol 5 (10) ◽  
pp. 758-763 ◽  
Author(s):  
C. Latta ◽  
A. Högele ◽  
Y. Zhao ◽  
A. N. Vamivakas ◽  
P. Maletinsky ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Spin Polarization ◽  
Nuclear Spin ◽  
Laser Excitation ◽  
Nuclear Spin Polarization ◽  
Resonant Laser

Chirped laser excitation of quantum dot excitons coupled to a phonon bath

2012 ◽  
Vol 86 (16) ◽  
Author(s):  
A. Debnath ◽  
C. Meier ◽  
B. Chatel ◽  
T. Amand
Keyword(s):  
Quantum Dot ◽  
Laser Excitation
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