scholarly journals Fluorescence enhancement of fluorophores tethered to different sized silver colloids deposited on glass substrate

Biopolymers ◽  
2004 ◽  
Vol 77 (1) ◽  
pp. 31-37 ◽  
Author(s):  
Joanna Lukomska ◽  
Joanna Malicka ◽  
Ignacy Gryczynski ◽  
Zoya Leonenko ◽  
Joseph R. Lakowicz
Keyword(s):  
Glass Substrate ◽  
Fluorescence Enhancement ◽  
Silver Colloids

scholarly journals Fabrication of Silver Interdigitated Electrode by a Stamp Method

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Kan-Sen Chou ◽  
Chia-Hsuan Lee
Keyword(s):  
Electrical Resistivity ◽  
Glass Substrate ◽  
Applied Force ◽  
Interdigitated Electrode ◽  
Interdigitated Electrodes ◽  
Silver Colloids ◽  
Average Dimension ◽  
Silver Ink ◽  
Optimal Force ◽  
In The Beginning

A stamp method was developed in this study to fabricate interdigitated electrodes (IDEs) on glass substrate from a 37.5 wt% silver ink. This method is simple and fast. A small amount of silver ink was first dripped into an IDE-patterned sponge of a stamp and then one could stamp out the desired IDE pattern made of nanosized silver colloids on a glass substrate, which was subsequently sintered at 280°C for 10 minutes to obtain the final silver IDE. Our brief study showed that when a large stamping force was used, more ink would be stamped out in the beginning and it decreased after each usage. However, if the force was too small, there would not be sufficient ink for a complete IDE. There existed therefore an optimal force to fabricate IDEs with minimal changes from sample to sample. The average dimension of an IDE when the applied force was 102 gm was roughly 403 ± 20 µm in width and 1154 ± 153 nm in height, and the average final electrical resistivity was about10×10-6 Ω-cm.

Metallic Nanoparticles and Nanostructures for Bio-Applications

2009 ◽  
Vol 74 ◽  
pp. 119-123
Author(s):  
Jing Bo Zhang ◽  
L. Cheng ◽  
L.Y.L. Yung ◽  
S.S. Chua ◽  
J.Y. Sze ◽  
...  
Keyword(s):  
Silicon Dioxide ◽  
Ag Nanoparticles ◽  
Glass Substrate ◽  
Thin Shell ◽  
Metallic Nanoparticles ◽  
Fluorescence Enhancement

This paper elaborates on approaches of synthesis of Au and Ag nanoparticles (NPs), deposition of colloid onto glass substrate and encapsulation of NPs with silicon dioxide (SiO2) thin shell. As one important bio application of metallic nanoparticles, both solution-based and substrate-based fluorescence enhancement tests are demonstrated.

Benzylamine Tartrate as an Organic Glass Substrate for Carbon Films by Evaporation

1970 ◽  
Vol 28 ◽  
pp. 484-485
Author(s):  
A. C. Faberge
Keyword(s):  
Vapor Pressure ◽  
Viscous Liquid ◽  
Glass Substrate ◽  
Room Temperature ◽  
Carbon Film ◽  
Carbon Films ◽  
Organic Glass ◽  
Spectroscopic Examination ◽  
Polymeric Substrates

Benzylamine tartrate (m.p. 63°C) seems to be a better and more convenient substrate for making carbon films than any of those previously proposed. Using it in the manner described, it is easy consistently to make batches of specimen grids as open as 200 mesh with no broken squares, and without individual handling of the grids. Benzylamine tartrate (hereafter called B.T.) is a viscous liquid when molten, which sets to a glass. Unlike polymeric substrates it does not swell before dissolving; such swelling of the substrate seems to be a principal cause of breakage of carbon film. Mass spectroscopic examination indicates a vapor pressure less than 10−9 Torr at room temperature.

Immobilization of ZnO Suspension on Glass Substrate to Remove Filtration During the Removal of Remazol Red R from Aqueous Solution

2016 ◽  
Vol 12 (6) ◽  
pp. 4127-4133
Author(s):  
Nazmul Kayes ◽  
Jalil Miah ◽  
Md. Obaidullah ◽  
Akter Hossain ◽  
Mufazzal Hossain
Keyword(s):  
Aqueous Solution ◽  
Glass Substrate ◽  
Uv Light ◽  
Aqueous Suspension ◽  
Light Irradiation ◽  
Zno Films ◽  
Light Sources ◽  
Zno Film ◽  
Semiconductor Oxides ◽  
Remazol Red

Photodegradation of textile dyes in the presence of an aqueous suspension of semiconductor oxides has been of growing interest. Although this method of destruction of dyes is efficient, the main obstacle of applying this technique in the industry is the time and cost involving separation of oxides from an aqueous suspension. In this research, an attempted was made to develop ZnO films on a glass substrate by simple immobilization method for the adsorption and photodegradation of a typical dye, Remazol Red R (RRR) from aqueous solution. Adsorption and photodegradation of  RRR were performed in the presence of glass supported ZnO film. Photodegradation of the dye was carried out by varying different parameters such as the catalyst dosage, initial concentrations of RRR, and light sources. The percentage of adsorption as well as photodegradation increased with the amount of ZnO, reaches a maximum and then decreased. Maximum degradation has been found under solar light irradiation as compared to UV-light irradiation. Removal efficiency was also found to be influenced by the pre-sonication of ZnO suspension.

A Photoactivable Formaldehyde Donor with Fluorescence Monitoring Reveals Threshold to Arrest Cell Migration

2019 ◽  
Author(s):  
Lukas P Smaga ◽  
Nicholas W Pino ◽  
Gabriela E Ibarra ◽  
Vishnu Krishnamurthy ◽  
Jefferson Chan
Keyword(s):  
Wound Healing ◽  
Cell Migration ◽  
Fluorescence Enhancement ◽  
Biological Effects ◽  
Cellular Systems ◽  
Live Cells ◽  
First Report ◽  
Cell Lysate ◽  
Intracellular Release ◽  
Biological Analytes

Controlled light-mediated delivery of biological analytes enables the investigation of highly reactivity molecules within cellular systems. As many biological effects are concentration dependent, it is critical to determine the location, time, and quantity of analyte donation. In this work, we have developed the first photoactivatable donor for formaldehyde (FA). Our optimized photoactivatable donor, photoFAD-3, is equipped with a fluorescence readout that enables monitoring of FA release with a concomitant 139-fold fluorescence enhancement. Tuning of photostability and cellular retention enabled quantification of intracellular FA release through cell lysate calibration. Application of photoFAD-3 uncovered the concentration range necessary for arresting wound healing in live cells. This marks the first report where a photoactivatable donor for any analyte has been used to quantify intracellular release.

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