Results 91 to 100 of about 1,172,898 (296)

Boron and nitrogen co-doped carbon dots as the dual functional fluorescent probe for Fe3+ and pH detection

open access: yesJournal of Saudi Chemical Society
Carbon dots doped with boron and nitrogen atoms (B, N-CDs) were designed and prepared by hydrothermal strategy using citric acid, urea and borax as raw materials.
Shenna Chen   +6 more
doaj   +1 more source

Highly selective and sensitive fluorescent chemosensor for femtomolar detection of silver ion in aqueous medium

open access: yesSensing and Bio-Sensing Research, 2015
The chemical sensing for the trace level detection of silver ion in aqueous solution still remains a challenge using simple, rapid, and inexpensive method. We report that thionine can be used as a fluorescent probe for the detection of Ag+ ion.
Abraham Daniel Arulraj   +4 more
doaj   +1 more source

Few photon transport in a waveguide coupled to a pair of collocated two-level atoms

open access: yes, 2011
We calculate the one- and two-photon scattering matrices of a pair of collocated non-identical two-level atoms coupled to a waveguide. We show that by proper choice of a two-photon input, the background fluorescence by the atoms may be completely ...
Eden Rephaeli   +3 more
core   +1 more source

The Fluorescence of Guanine and Guanosine. Effects of Temperature and Viscosity on Fluorescence Polarization and Quenching. [PDF]

open access: bronze, 1967
Hans Chr. Børresen   +8 more
openalex   +1 more source

The heat of formation of CN radicals and radiative lifetimes of the A 1 Sigma - state of C2N2 [PDF]

open access: yes, 1990
Radiative lifetimes have been measured for the stable vibrational levels of the A 1 sigma - electronic state of C2N2. They range from 1.3 microsec for the 4(sub 0)(sup 1) level to 0.66 microsec for the 1(sub 0)(sup 1) 4(sub 0)(sup 1) level and in general
Barts, Samuel A.   +2 more
core   +1 more source

Lifetime quenching in Yb doped fibres

open access: yes, 1997
We have discovered that in ytterbium-doped silica fibres the excited state lifetime of a fraction of the Yb ions can be quenched to a very small value, leading to a strong unbleachable loss.
Barber, P.R.   +5 more
core   +1 more source

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