scholarly journals Highly Sensitive Singlet Oxygen Spectroscopic System Using InGaAs PIN Photodiode

10.5772/66644 ◽  
2017 ◽  
Author(s):  
Iwao Mizumoto ◽  
Hiroshi Oguma ◽  
Yostumi Yoshi
Keyword(s):  
Singlet Oxygen ◽  
Pin Photodiode ◽  
Highly Sensitive

39-2: Highly Sensitive a-Si:H PIN Photodiode Gated LTPS TFT for Optical In-Display Fingerprint Identification

2018 ◽  
Vol 49 (1) ◽  
pp. 490-493 ◽  
Author(s):  
Xianda Zhou ◽  
Meng Zhang ◽  
Yitong Xu ◽  
Wei Zhou ◽  
Kai Wang ◽  
...  
Keyword(s):  
Fingerprint Identification ◽  
Pin Photodiode ◽  
Highly Sensitive

scholarly journals Highly Sensitive Fluorescent Probes for the Quantitative Determination of Singlet Oxygen (1O2)

2012 ◽  
Vol 33 (5) ◽  
pp. 1608-1612 ◽  
Author(s):  
Syed Rahin Ahmed ◽  
Kwang-Nak Koh ◽  
Nam-Lyong Kang ◽  
Jae-Beom Lee
Keyword(s):  
Quantitative Determination ◽  
Singlet Oxygen ◽  
Fluorescent Probes ◽  
Highly Sensitive

Design of a β-diketonate–Eu3+ complex-based time-gated luminescence probe for visualizing mitochondrial singlet oxygen

2017 ◽  
Vol 41 (24) ◽  
pp. 15187-15194 ◽  
Author(s):  
Jing Wu ◽  
Yue Xing ◽  
Huan Wang ◽  
Hongjing Liu ◽  
Mei Yang ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Singlet Oxygen ◽  
Therapy Process ◽  
Highly Sensitive

A β-diketonate–Eu3+ complex-based time-gated luminescence probe was developed for highly sensitive monitoring of mitochondrial singlet oxygen during the photodynamic therapy process.

scholarly journals Highly Sensitive Luminescent Probe for Singlet Oxygen Based on A Europium (III) Complexes Containing Benzoyltrifluoroacetone and (1-(Anthracen-9-yl)-N-(pyridine-2-yl methyl) Methaneamine Ligands

2021 ◽  
Vol 37 (1) ◽  
Author(s):  
Dinh Thi Hien ◽  
Pham Thi Nhan
Keyword(s):  
Molecular Structure ◽  
Singlet Oxygen ◽  
Biological Systems ◽  
Luminescent Probe ◽  
Highly Sensitive ◽  
Oxygen Atoms

A new luminescent probe based on β- diketonate Eu3+ complex, Eu (TFPB)3AnPy, where AnPy is (1-(anthracen-9-yl)-N-(pyridine-2-ylmethyl) methaneamine and TFPB is  benzoyltriluoro acetone was successfully synthesized. The molecular structure of Eu (TFPB)3AnPy determined by SC-XRD show an eight coordination in which Eu3+ is bonded to six oxygen atoms of three TFPB and two nitrogen atoms of the AnPy ligand. The complex could act as a highly sensitive luminescent probe for 1O2 that can be applied in biological systems.

scholarly journals Highly Sensitive Luminescence Detection of Photosensitized Singlet Oxygen within Photonic Crystal Fibers

ChemPhotoChem ◽  
2018 ◽  
Vol 2 (7) ◽  
pp. 616-621 ◽  
Author(s):  
Gareth O. S. Williams ◽  
Tijmen G. Euser ◽  
Philip St. J. Russell ◽  
Alexander J. MacRobert ◽  
Anita C. Jones
Keyword(s):  
Photonic Crystal ◽  
Singlet Oxygen ◽  
Photonic Crystal Fibers ◽  
Luminescence Detection ◽  
Highly Sensitive ◽  
Crystal Fibers

Ovarian Dysfunction in Fetally Irradiated Beagles

1977 ◽  
Vol 35 ◽  
pp. 658-659
Author(s):  
T. M. Seed ◽  
M. H. Sanderson ◽  
D. L. Gutzeit ◽  
T. E. Fritz ◽  
D. V. Tolle ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Low Dose ◽  
Long Term Effects ◽  
Ovarian Dysfunction ◽  
Dose Rates ◽  
Highly Sensitive ◽  
Microscopic Evaluation ◽  
Ovarian Pathology ◽  
Normal Offspring

The developing mammalian fetus is thought to be highly sensitive to ionizing radiation. However, dose, dose-rate relationships are not well established, especially the long term effects of protracted, low-dose exposure. A previous report (1) has indicated that bred beagle bitches exposed to daily doses of 5 to 35 R 60Co gamma rays throughout gestation can produce viable, seemingly normal offspring. Puppies irradiated in utero are distinguishable from controls only by their smaller size, dental abnormalities, and, in adulthood, by their inability to bear young.We report here our preliminary microscopic evaluation of ovarian pathology in young pups continuously irradiated throughout gestation at daily (22 h/day) dose rates of either 0.4, 1.0, 2.5, or 5.0 R/day of gamma rays from an attenuated 60Co source. Pups from non-irradiated bitches served as controls. Experimental animals were evaluated clinically and hematologically (control + 5.0 R/day pups) at regular intervals.

Fluorescence ratio imaging of dynamic intracellular ionic signals

1988 ◽  
Vol 46 ◽  
pp. 42-43
Author(s):  
R. Y. Tsien ◽  
A. Minta ◽  
M. Poenie ◽  
J.P.Y. Kao ◽  
A. Harootunian
Keyword(s):  
Binding Sites ◽  
Living Cells ◽  
Molecular Engineering ◽  
Ph Indicators ◽  
Highly Sensitive ◽  
Fluorescence Ratio Imaging ◽  
Ratio Imaging ◽  
Technical Advances ◽  
Indicator Dyes ◽  
Fluorescein Dyes

Recent technical advances now enable the continuous imaging of important ionic signals inside individual living cells with micron spatial resolution and subsecond time resolution. This methodology relies on the molecular engineering of indicator dyes whose fluorescence is strong and highly sensitive to ions such as Ca2+, H+, or Na+, or Mg2+. The Ca2+ indicators, exemplified by fura-2 and indo-1, derive their high affinity (Kd near 200 nM) and selectivity for Ca2+ to a versatile tetracarboxylate binding site3 modeled on and isosteric with the well known chelator EGTA. The most commonly used pH indicators are fluorescein dyes (such as BCECF) modified to adjust their pKa's and improve their retention inside cells. Na+ indicators are crown ethers with cavity sizes chosen to select Na+ over K+: Mg2+ indicators use tricarboxylate binding sites truncated from those of the Ca2+ chelators, resulting in a more compact arrangement of carboxylates to suit the smaller ion.

Various technic for the measurement of step thickness on crystal surfaces

1978 ◽  
Vol 36 (1) ◽  
pp. 438-439
Author(s):  
C. Boulesteix ◽  
C. Colliex ◽  
C. Mory ◽  
B. Pardo ◽  
D. Renard
Keyword(s):  
Critical Thickness ◽  
Symmetric Case ◽  
Transmitted Intensity ◽  
Crystal Surfaces ◽  
Bright Field ◽  
Excited Wave ◽  
Highly Sensitive ◽  
Contrast Mechanisms ◽  
Step Thickness ◽  
Thickness Variations

Contrast mechanisms, which are responsible of the various types of image formation, are generally thickness dependant. In the following, two imaging modes in the 100 kV CTEM are described : they are highly sensitive to thickness variations and can be used for quantitative estimations of step heights.Detailed calculations (1) of the bright-field intensity have been carried out in the 3 (or 2N+l)-beam symmetric case. They show that in given conditions, the two important symmetric Bloch waves interfere most strongly at a critical thickness for which they have equal emergent amplitudes (the more excited wave at the entrance surface is also the more absorbed). The transmitted intensity I for a Nd2O3 specimen has been calculated as a function of thickness t. The capacity of the method to detect a step and measure its height can be more clearly deduced from a plot of dl/Idt as shown in fig. 1.

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