Results 41 to 50 of about 190,713 (360)

Aqueous monitoring of toxic mercury through a rhodamine-based fluorescent sensor

open access: yesMathematical Biosciences and Engineering, 2019
Mercury is a toxic heavy element, which contaminates air, land, and water, thus posing environment and human health-related threats to the ecological system.
Tahir Rasheed   +5 more
doaj   +1 more source

Portable Iontophoresis Device for Efficient Drug Delivery

open access: yesBioengineering, 2023
The timely delivery of drugs to specific locations in the body is imperative to ensure the efficacy of treatment. This study introduces a portable facial device that can deliver drugs efficiently using iontophoresis.
Moonjeong Bok   +3 more
doaj   +1 more source

Vacuum Rabi splitting and strong coupling dynamics for surface plasmon polaritons and Rhodamine 6G molecules [PDF]

open access: yesPhys. Rev. Lett. 103, 053602 (2009), 2009
We report on strong coupling between surface plasmon polaritons (SPP) and Rhodamine 6G (R6G) molecules, with double vacuum Rabi splitting energies up to 230 and 110 meV. In addition, we demonstrate the emission of all three energy branches of the strongly coupled SPP-exciton hybrid system, revealing features of system dynamics that are not visible in ...
arxiv   +1 more source

Feasibility of surveying pesticide coverage with airborne fluorometer [PDF]

open access: yes, 1970
Response of a Fraunhofer line discriminator (FLD) to varying distributions of granulated corncobs stained with varying concentrations of Rhodamine WT dye was tested on the ground and from an H-19 helicopter.
Hemphill, W. R., Stoertz, G. E.
core   +2 more sources

Rhodamine-Anchored Polyacrylamide Hydrogel for Fluorescent Naked-Eye Sensing of Fe3+

open access: yesMolecules, 2023
A fluorescent and colorimetric poly (acrylamide)-based copolymer probe P(AAm-co-RBNCH) has been designed via free radical polymerization of a commercial acrylamide monomer with a rhodamine-functionalized monomer RBNCH.
Dandan Jiang   +8 more
doaj   +1 more source

Percolation diffusion into self-assembled mesoporous silica microfibres [PDF]

open access: yesNanomaterials 2014, 4(1), 157-174, 2014
Percolation diffusion into long (11.5 cm) self-assembled, ordered mesoporous microfibres is studied using optical transmission and laser ablation inductive coupled mass spectrometry (LA-ICP-MS). Optical transmission based diffusion studies reveal rapid penetration (< 5 s, D > 80 um2.s-1) of Rhodamine B with very little percolation of larger molecules ...
arxiv   +1 more source

Practical Broad-Band Tuning of Dye Lasers by Solvent Shifting [PDF]

open access: yes, 1986
We have operated a dye laser over a broad wavelength range (593.8-667.0nm) by shifting the dye emission profile with incremental changes of solvent composition. This was accomplished with the laser operating continuously, and only minor adjustment of the
Bird, George R.   +3 more
core   +1 more source

Assessing the aquatic toxicity and environmental safety of tracer compounds Rhodamine B and Rhodamine WT

open access: yesWater Research, 2021
Tracer tests represent a well-established method for delineating key environmental processes in various media and engineered systems. Tracers like Rhodamine B and WT are frequently applied due to their strong fluorescence even at low concentrations.. However, due to a lack of ecotoxicological data, limit values for these tracers cannot be determined ...
L.M. Skjolding   +8 more
openaire   +5 more sources

New synthetic strategies for xanthene-dye-appended cyclodextrins

open access: yesBeilstein Journal of Organic Chemistry, 2016
Xanthene dyes can be appended to cyclodextrins via an ester or amide bridge in order to switch the fluorescence on or off. This is made possible through the formation of nonfluorescent lactones or lactams as the fluorophore can reversibly cyclize.
Milo Malanga   +5 more
doaj   +1 more source

Photodegradation and self-healing in a Rhodamine 6G dye and Y$_2$O$_3$ nanoparticle-doped polyurethane random laser [PDF]

open access: yesApp. Phys. B 120, 1-12 (2015), 2015
One of the fundamental difficulties in implementing organic dyes in random lasers is irreversible photodegradation of the dye molecules, leading to loss of performance and the need to replace the dye. We report the observation of self-healing after photodegradation in a Rhodamine 6G dye and nanoparticle doped polyurethane random laser.
arxiv   +1 more source

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