near infrared absorptivity
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near infrared absorptivity

Estimation of Concentration and Bonding Environment of ...

1999-4-23  Integrated near infrared (NIR) absorbance has been used to determine the absorptivity of the y2 + y3 combination band of the asymmetric stretch (y2) and the bending vi-bration (y3) for water in several organic sol-vents. Absorptivity measured in this way is essentially constant across the absorption envelope and is found to be 336 L mol–1

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Exceptional Near-Infrared Fluorescence Quantum

2021-3-12  Abstract. We show that meso-to - meso ethyne-bridged (porphinato)zinc (II) oligomers ( PZnn structures) define exceptional low band gap organic materials that possess both large magnitude NIR S 1 → S 0 fluorescence quantum yields and substantial S 1 → S n absorptive cross-sections, tunable over a wide 850−1400 nm spectral window.

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Spectrum of Excess Partial Molar Absorptivity. I. Near ...

2019-12-12  Near-Infrared (NIR) Study of Hydrogen Bonding of Methanol Molecules in Polar and Nonpolar Solvents: An Approach from Concentration-Dependent Molar Absorptivity. Applied Spectroscopy 2014, 68 (10) , 1181-1189. DOI: 10.1366/14-07449.

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Spectrum of excess partial molar absorptivity. Part II: a ...

2012-4-7  Epub 2012 Feb 23. Spectrum of excess partial molar absorptivity. Part II: a near infrared spectroscopic study of aqueous Na-halides. Sebe F (1), Nishikawa K, Koga Y. Author information: (1)Graduate School of Advanced Integration Sciences, Chiba University, Japan. Our earlier thermodynamic studies suggested that F (-) and Cl (-) form hydration ...

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Near-Infrared Activatable Phthalocyanine-Poly-L

2018-7-2  During this study, we discovered that 1-PG possessed high near-infrared (NIR) light absorptivity (λmax = 675 nm), good singlet oxygen generation efficiency in an aqueous environment, and enhanced photocytotoxic efficacy and cancer cell uptake in vitro.

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OSA First-principle model for the directional spectral ...

First-principle model for the directional spectral absorptivity of gold-black in the near infrared. Nazia B. Munir, J. R. Mahan, and Kory J. Priestley. Author Information.

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Near Infrared Radiation - an overview ScienceDirect

The primary heat source for the ocean is solar radiation entering through the top surface. Almost all of the solar energy flux into the ocean is absorbed in the top 100 m. Infrared and near-infrared radiations are absorbed in the top centimeter, but blue and green visible radiation can penetrate to more than 100 m if the water is especially clear.

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Near-infrared spectroscopy of hydrocarbon functional ...

1972-3-1  INTRODUCTION THE NEAB-iNfBABED (NIR) region of the electromagnetic spectrum is attractive both for analytical purposes and for molecular structure investigations. Most of the bands observed in this region arise from overtones or combinations of carbon hydrogen stretching vibrations lying in the range 3100-2800 cm"1.

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Graphene plasmonics for surface enhancement near

Monolayer graphene has poor absorption in the near-infrared region. Its layer is only as thick as a single atom so it cannot have a high absorptivity. In this paper, in order to form a hybrid system, the absorption characteristics of monolayer graphene covering a metal/dielectric/metal substrate

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Exceptional Near-Infrared Fluorescence Quantum

2021-3-12  Exceptional Near-Infrared Fluorescence Quantum Yields and Excited-State Absorptivity of Highly Conjugated Porphyrin Arrays. Timothy V. Duncan, Kimihiro Susumu, Louise E. Sinks, and ; Michael J. Therien

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Near-infrared (NIR) study of hydrogen bonding of

Near-infrared (NIR) study of hydrogen bonding of methanol molecules in polar and nonpolar solvents: an approach from concentration-dependent molar absorptivity Appl Spectrosc . 2014;68(10):1181-9. doi: 10.1366/14-07449.

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Spectrum of Excess Partial Molar Absorptivity. I. Near ...

2019-12-12  Near-Infrared (NIR) Study of Hydrogen Bonding of Methanol Molecules in Polar and Nonpolar Solvents: An Approach from Concentration-Dependent Molar Absorptivity. Applied Spectroscopy 2014, 68 (10) , 1181-1189. DOI: 10.1366/14-07449.

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Spectrum of excess partial molar absorptivity. I. Near ...

2009-9-3  Spectrum of excess partial molar absorptivity. I. Near infrared spectroscopic study of aqueous acetonitrile and acetone. Koga Y(1), Sebe F, Minami T, Otake K, Saitow K, Nishikawa K. Author information: (1)Department of Chemistry, The University of British Columbia, Vancouver, BC Canada, V6T 1Z1. [email protected]

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Graphene plasmonics for surface enhancement near-infrared ...

2017-7-1  Monolayer graphene has poor absorption in the near-infrared region. Its layer is only as thick as a single atom so it cannot have a high absorptivity. In this paper, in order to form a hybrid system, the absorption characteristics of monolayer graphene

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Visible to near-infrared thermal radiation from ...

The fabricated W radiation antennas yielded greater absorptivity in visible to near-infrared wavelengths by increasing the aspect ratio of the cones, resulting in a near two-fold enhancement in average absorptivity compared to a reference planar W substrate. The measured absorptivity spectra were reproduced well by electromagnetic simulations ...

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Near-infrared spectroscopy of hydrocarbon functional ...

1972-3-1  Near-infrared spectroscopy of hydrocarbon functional groups 693 for the band at 5867 cm-1. It should be noted that 2,3 dimetyhl butane, where no methylene groups are present, shows an absorption at 6808 cm~1, due to the contri- bution of neighbour methyl bands. The absorptivity of the fourth band depends upon the methyl content according to the ...

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OSA Pyroelectric infrared sensor with high

The black graphene electrode has high absorptivity at the range from near-infrared to mid-infrared. In order to verify the PID-GE, the control group (CG) device, which uses the Ni/Fe electrode, is also fabricated. When the chopping frequency is 3 Hz, the peak-to-peak value (Vpp) and signal to noise ratio (SNR) of the PIR-GE are enhanced 204% ...

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Color compensation and comparison of shortwave

2016-5-1  Near-infrared (NIR) spectroscopy has been proposed as an alternative to traditional methods, and gained abundant acceptance for rapid analysis of a wide variety of agricultural products and parameters, because it is a non-destructive, low-cost, accurate and reliable method, and can be used to analyze multiple attribute simultaneously (Nicolaï ...

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absorptivity(英语单词)_百度百科

In the solar and near infrared region it is more usual to speak of absorptivity than emissivity. 在日射和近红外区段内,讨论吸收率比讨论发射率更为普遍。 The main factors, which determines the effectiveness of carburant, are the melting rate and absorptivity when the cr.

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Spectrum of excess partial molar absorptivity. Part II: a ...

Spectrum of excess partial molar absorptivity. Part II: a near infrared spectroscopic study of aqueous Na-halides F. Sebe, K. Nishikawa and Y. Koga, Phys. Chem. Chem. Phys., 2012, 14, 4433 DOI: 10.1039/C2CP23255C If you are not the ...

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NEAR-INFRARED ABSORPTIVE COMPOSITION, NEAR

The near-infrared absorptive image-forming composition of the present invention exhibits excellent effects and advantages that when a print is formed from the composition, the print does not substantially show any absorption in the visible region, exhibits near-infrared absorptivity and realizes a high durability.

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Spectrum of excess partial molar absorptivity. I. Near ...

We study the mixing schemes or the molecular processes occurring in aqueous acetonitrile (ACN) and acetone (ACT) by near-infrared spectroscopy (NIR). Both solutions (any other aqueous solutions) are not free from strong and complex intermolecular interactions. To tackle such a many-body problem, we first use the concept of the excess molar absorptivity, epsilonE, which is a function of solute ...

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Enlarging the Reservoir: High Absorption Coefficient

2021-5-7  Although organic materials with near infrared (NIR)-II fluorescence and a photothermal effect have been widely investigated for the accurate diagnosis and treatment of tumors, optimizing the output signals of both remain challenging. ... Results show that TDADT with two DPP units possesses an exceptionally high molar absorptivity

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Far-infrared absorptivity of UPt/sub 3/ (Technical

OSTI.GOV Technical Report: Far-infrared absorptivity of UPt/sub 3/. Far-infrared absorptivity of UPt/sub 3/ Full Record; Other Related Research

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Molar Absorptivity Measurements in Absorbing

Molar absorptivity is a fundamental molecular property that quantifies absorption strength as a function of wavelength. Absolute measurements of molar absorptivity demand accounting for all mechanisms of light attenuation, including reflective losses at interfaces associated with the sample. ... At near-infrared wavelengths, however, many ...

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Enlarging Reservoir: High Absorption Coefficient Dyes ...

2021-5-7  Although organic materials with near infrared (NIR)-II fluorescence and a photothermal effect have been widely investigated for the accurate diagnosis and treatment of tumors, optimizing the output signals of both remain challenging. ... Results show that TDADT with two DPP units possesses an exceptionally high molar absorptivity of 2.1 × 10 5 ...

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A Dual Four-Quadrant Photodetector Based on Near

2021-2-27  Near-infrared enhanced photodetector [1,2,3] is difficult to obtain satisfying performance compared with photodetectors at other wavelengths [4,5,6] because it is limited by response range, response rate, dark current and crosstalk in the near-infrared band.However, since Carey developed the first black silicon infrared detector in 2005, the near-infrared photodetector based on black silicon ...

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[PDF] Estimation of Concentration and Bonding

Integrated near infrared (NIR) absorbance has been used to determine the absorptivity of the υ2 + υ3 combination band of the asymmetric stretch (υ2) and the bending vibration (υ3) for water in several organic solvents. Absorptivity measured in this way is essentially constant across the absorption envelope and is found to be 336 L mol−1 cm−1 with a standard deviation of 4 L mol−1 cm ...

Read More
absorptivity(英语单词)_百度百科

In the solar and near infrared region it is more usual to speak of absorptivity than emissivity. 在日射和近红外区段内,讨论吸收率比讨论发射率更为普遍。 The main factors, which determines the effectiveness of carburant, are the melting rate and absorptivity when the cr.

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