PubAg

Main content area

You searched for: Subject "refractive index" Remove constraint Subject: "refractive index" Publication Year 2018 Remove constraint Publication Year: 2018 Subject refractive index Remove constraint Subject: refractive index
Start Over

Search

266  Search Results

« Previous | 1 - 20 of 266 |
Number of results to display per page

Search Results

1. Symmetry Breaking-Induced Plasmonic Mode Splitting in Coupled Gold–Silver Alloy Nanodisk Array for Ultrasensitive RGB Colorimetric Biosensing

Author:
Misbah, Ibrahim; Zhao, Fusheng; Shih, Wei-Chuan
Source:
ACS applied materials & interfaces 2018 v.11 no.2 pp. 2273-2281
ISSN:
1944-8252
Subject:
refractive index,   etc   ; alloys; cameras; color; colorimetry; electric field; energy; hybridization; mobile telephones; nanogold; nanosilver; nanospheres; point-of-care systems; surface plasmon resonance; wavelengths; white light;     Show all 16 Subjects
Abstract:
... We report the first observation of symmetry breaking-induced mode splitting in coupled gold–silver alloy nanodisk array (ANA). According to the plasmonic hybridization picture, the original localized surface plasmon resonance (LSPR) of individual nanodisk is split into a pair of high and low energy modes when placed in between a superstrate and a substrate. Although well studied in single silver n ...
DOI:
10.1021/acsami.8b17876

2. Liquid-liquid extraction of phenolic compounds from water using ionic liquids: Literature review and new experimental data using [C2mim]FSI

Author:
Sas, Olalla G.; Domínguez, Irene; González, Begoña; Domínguez, Ángeles
Source:
Journal of environmental management 2018 v.228 pp. 475-482
ISSN:
0301-4797
Subject:
refractive index,   etc   ; 2-chlorophenol; atmospheric pressure; compressibility; hydrophobicity; ionic liquids; liquid-liquid extraction; o-cresol; resorcinol; solubility; temperature; thermal expansion; viscosity;     Show all 13 Subjects
Abstract:
... In this work, the capability of the ionic liquid, 1-ethyl-3-methylimidazolium bis(fluorosulfonyl)imide, [C2mim]FSI, to extract o-cresol, 2-chlorophenol, resorcinol and phenol from water, reaching the legal limit of 1 mg L⁻¹ was analyzed. The extraction process was carried out for each one of these phenolic compounds varying the initial concentration in water from 3 mg L⁻¹ to 1000 mg L⁻¹, and for a ...
DOI:
10.1016/j.jenvman.2018.09.042

3. Three novel Cu(II), Cd(II) and Cr(III) complexes of 6−Methylpyridine−2−carboxylic acid with thiocyanate: Synthesis, crystal structures, DFT calculations, molecular docking and α-Glucosidase inhibition studies

Author:
Avcı, Davut; Altürk, Sümeyye; Sönmez, Fatih; Tamer, Ömer; Başoğlu, Adil; Atalay, Yusuf; Kurt, Belma Zengin; Dege, Necmi
Source:
Tetrahedron 2018 v.74 no.50 pp. 7198-7208
ISSN:
0040-4020
Subject:
refractive index,   etc   ; Fourier transform infrared spectroscopy; X-ray diffraction; alpha-glucosidase; binding sites; cadmium; carboxylic acids; chemical reactions; chromium; computer simulation; copper; crystal structure; enzyme inhibition; genistein; geometry; models; spectral analysis; thiocyanates; ultraviolet-visible spectroscopy;     Show all 19 Subjects
Abstract:
... Novel complexes of 6−methylpyridine−2−carboxylic acid and thiocyanate {[Cu(NCS)(6-mpa)2], (1); [Cd(NCS)(6-mpa)]n, (2); [Cr(NCS)(6-mpa)2·H2O], (3)} were synthesized, and their structures were characterized by XRD analysis, FT–IR and UV–Vis spectroscopic techniques. The inhibitory activities of the synthesized complexes (1–3) on α-glucosidase were determined by using genistein reference compound. Fu ...
DOI:
10.1016/j.tet.2018.10.054

4. Near-Infrared Hyperspectral Absorption/Scattering Imaging Method Using Multiple Ground Plates for Evaluating Polymer Composites

Author:
Muroga, Shun; Hikima, Yuta; Ohshima, Masahiro
Source:
Analytical chemistry 2018 v.91 no.3 pp. 1887-1893
ISSN:
1520-6882
Subject:
refractive index,   etc   ; absorbance; absorption; angle of incidence; chemical structure; image analysis; near-infrared spectroscopy; nondestructive methods; polymers;     Show all 9 Subjects
Abstract:
... This paper proposes a nondestructive method of evaluating polymer composites using near-infrared (NIR) diffuse reflection spectroscopy with multiple ground plates. Wavelength-dependent absorption and reduced scattering coefficients were acquired to evaluate the chemical structure and the concentration of the substances from absorption and to determine the size and the dispersity of filler in the p ...
DOI:
10.1021/acs.analchem.8b03723

5. Structure and Properties of Gallium-Rich Sodium Germano-Gallate Glasses

Author:
Skopak, T.; Kroeker, S.; Levin, K.; Dussauze, M.; Méreau, R.; Ledemi, Y.; Cardinal, T.; Fargin, E.; Messaddeq, Y.
Source:
Journal of physical chemistry 2018 v.123 no.2 pp. 1370-1378
ISSN:
1932-7455
Subject:
refractive index,   etc   ; Raman spectroscopy; cations; density functional theory; gallium; glass; glass transition temperature; nuclear magnetic resonance spectroscopy; physical chemistry; sodium;     Show all 10 Subjects
Abstract:
... Glass compositions in the gallium-rich region of the ternary GaO₃/₂–GeO₂–NaO₁/₂ vitreous system are studied as a function of the Na/Ga cationic ratio (ranging from 1.30 to 1.61) for a fixed GeO₂ content. Glass structures are investigated by ⁷¹Ga magic angle spinning nuclear magnetic resonance, infrared, and Raman spectroscopies, and the thermal, optical, and physical properties are characterized. ...
DOI:
10.1021/acs.jpcc.8b08632

6. Quantitative Characterization of Optical Coupling in Nanoporous ZnO–WO₃ and ZnO–PEDOT Composite Electrodeposited Gratings Using Electrodiffraction Measurements

Author:
Fung, Han Wai Millie; So, Seulgi; Kartub, Kellen; Corn, Robert M.
Source:
Journal of physical chemistry 2018 v.123 no.1 pp. 762-769
ISSN:
1932-7455
Subject:
refractive index,   etc   ; electrochemistry; glass; nanopores; physical chemistry; scanning electron microscopy; surface area; tin dioxide; tungsten oxide; zinc oxide;     Show all 10 Subjects
Abstract:
... To quantitatively characterize the optical coupling between ZnO (a high refractive index but nonabsorptive material) and an electrochromic material (either tungsten oxide (WO₃) or poly(3,4-ethylenedioxythiophene) (PEDOT)), electrodiffractive and electrochromic properties were investigated from a novel two-component composite nanostructured electrodeposited grating that incorporated both ZnO and ei ...
DOI:
10.1021/acs.jpcc.8b08072

7. Ag-coated submicron particles of polystyrene formed by dewetting process and their application in multi-functional biosensor-chips A Physicochemical and engineering aspects

Author:
Taguchi, Marie; Ogami, Tasuku; Ando, Jun; Fukuda, Takashi; Emoto, Akira
Source:
Colloids and surfaces 2018 v.558 pp. 171-178
ISSN:
0927-7757
Subject:
refractive index,   etc   ; colloids; glass; glucose; molecular weight; polystyrenes; wavelengths;     Show all 7 Subjects
Abstract:
... The formation of submicron polystyrene (PS) particles based on dewetting process during spin-coating was investigated. The surface morphologies on glass substrates were analyzed. The formation of particles was achieved using PS with relatively high molecular weight (Mw ≥ 3250). In addition, it was observed that the particle formation proceeded through sequential morphological changes in the order ...
DOI:
10.1016/j.colsurfa.2018.07.007

8. Gas-Sensing Mechanism of Silica with Photonic Bandgap Shift

Author:
Xie, Juan; Duan, Ming; Bai, Penghui; Lei, Kai; Yang, Chen; Liu, Biao; Zhang, Lei; Tang, Junlei; Wang, Yingying; Wang, Hu
Source:
Analytical chemistry 2018 v.91 no.1 pp. 1133-1139
ISSN:
1520-6882
Subject:
refractive index,   etc   ; crystals; photons; physical models; silica; vapors; volatile organic compounds;     Show all 7 Subjects
Abstract:
... Two physical models, the replacing model and the filling model, have been proposed to explain the mechanism of the effective-refractive-index change of photonic crystals (PCs). Theoretically, the photonic bandgap (PBG) would shift when PCs are exposed to different environments, which leads to a change of the effective refractive index of PCs. However, the mechanism of effective-refractive-index ch ...
DOI:
10.1021/acs.analchem.8b04874

9. Composite GaN–C–Ga (“GaCN”) Layers with Tunable Refractive Index

Author:
Banerjee, Sourish; Onnink, Arnoud J.; Dutta, Satadal; Aarnink, Antonius A. I.; Gravesteijn, Dirk J.; Kovalgin, Alexey Y.
Source:
Journal of physical chemistry 2018 v.122 no.51 pp. 29567-29576
ISSN:
1932-7455
Subject:
refractive index,   etc   ; ammonia; carbon; crystals; gallium; nitrogen; physical chemistry; silicon; temperature; thermal degradation;     Show all 10 Subjects
Abstract:
... This article describes novel composite thin films consisting of GaN, C, and Ga (termed “GaCN”, as an analogue to BCN and other carbonitrides) as a prospective material for future optical applications. This is due to their tunable refractive index that depends on the carbon content. The composites are prepared by introducing alternating pulses of trimethylgallium (TMG) and ammonia (NH₃) on silicon ...
DOI:
10.1021/acs.jpcc.8b09142

10. Multifunctional Polystyrene Core/Silica Shell Microparticles with Antifouling Properties for Bead-Based Multiplexed and Quantitative Analysis

Author:
Sarma, Dominik; Carl, Peter; Climent, Estela; Schneider, Rudolf J.; Rurack, Knut
Source:
ACS applied materials & interfaces 2018 v.11 no.1 pp. 1321-1334
ISSN:
1944-8252
Subject:
refractive index,   etc   ; additives; adsorption; antibodies; antifouling activities; beverages; caffeine; dyes; fluorescent antibody technique; haptens; hydrophobicity; microparticles; moieties; polyethylene glycol; polymerization; polystyrenes; quantitative analysis; silane; silica; washing;     Show all 20 Subjects
Abstract:
... Commercial bead-based assays are commonly built upon polystyrene particles. The polymeric carrier can be encoded with organic dyes and has ideal material properties for cytometric applications such as low density and high refractive index. However, functional groups are conventionally integrated during polymerization and subsequent modification is limited to the reactivity of those groups. Additio ...
DOI:
10.1021/acsami.8b10306

11. Analysis of elemental and isotopic variation in glass frictionators from 0.22 rimfire primers

Author:
Seyfang, Kelsey E.; Kobus, Hilton J.; Popelka-Filcoff, Rachel S.; Plummer, Andrew; Magee, Charles W.; Redman, Kahlee E.; Kirkbride, K. Paul
Source:
Forensic science international 2018 v.293 pp. 47-62
ISSN:
0379-0738
Subject:
refractive index,   etc   ; antimony; energy-dispersive X-ray analysis; forensic sciences; glass; mass spectrometry; scanning electron microscopy; Australia;     Show all 8 Subjects
Abstract:
... The majority of 0.22 calibre rimfire ammunition available in Australia, and overseas, tends to use glass powder rather than antimony sulfide frictionator in the primer. This glass can be the nucleus of a GSR particle, with other primer components condensing around and onto the glass structure. As the composition of glass frictionator remains largely unaltered during ammunition discharge [1] there ...
DOI:
10.1016/j.forsciint.2018.10.017

12. Effect of the application of an enzymatic pretreatment on bioactive compounds of Caryocar brasiliense Camb pulp oil

Author:
Malacrida, Cassia Roberta; Moraes, Izabel Cristina Freitas; de Rosso, Veridiana Vera; Rodrigues, Christianne Elisabete da Costa; de Souza, Allan Chiea
Source:
Journal of food processing and preservation 2018 v.42 no.12 pp. e13828
ISSN:
0145-8892
Subject:
refractive index,   etc   ; Caryocar brasiliense; acid value; antioxidant activity; bioactive compounds; cold; cooking fats and oils; food industry; nutritive value; oleic acid; pharmaceutical industry; phenolic compounds; pressing; pulp; solvents; zeaxanthin;     Show all 16 Subjects
Abstract:
... This study aimed to evaluate the application of an enzymatic pretreatment in obtaining pequi pulp oil by cold pressing. It was evaluated the yield and quality of the oil obtained mainly in relation to the bioactive compounds. There was an increase of approximately 22% in the process yield compared to the cold pressing without enzymatic pretreatment. Comparing the physicochemical characteristics of ...
DOI:
10.1111/jfpp.13828

13. Iridescent colouration of male Anna’s hummingbird (Calypte anna) caused by multilayered barbules

Author:
Giraldo, Marco A.; Parra, Juan L.; Stavenga, Doekele G.
Source:
Journal of comparative physiology 2018 v.204 no.12 pp. 965-975
ISSN:
0340-7594
Subject:
refractive index,   etc   ; absorbance; color; courtship; hummingbirds; keratin; males; plumage; reflectance; reflectance spectroscopy;     Show all 10 Subjects
Abstract:
... The male Anna’s hummingbird features a brightly reddish-pink reflecting gorget, due to large stacks of melanosomes in the feather barbules, arranged in layers separated by keratin. Direct observations together with detailed scatterometry demonstrated that the barbules reflect incident light in an approximately specular manner. The structural colouration is iridescent, i.e. varies with a changing a ...
DOI:
10.1007/s00359-018-1295-8

14. SSC prediction of cherry tomatoes based on IRIV‐CS‐SVR model and near infrared reflectance spectroscopy

Author:
Jun, Sun; Yating, Li; Xiaohong, Wu; Chunxia, Dai; Yong, Chen
Source:
Journal of food process engineering 2018 v.41 no.8 pp. e12884
ISSN:
0145-8876
Subject:
refractive index,   etc   ; algorithms; cherry tomatoes; fruits; light scattering; models; near-infrared spectroscopy; nondestructive methods; prediction; reflectance spectroscopy; regression analysis; spectral analysis; spectrometers; total soluble solids; wavelengths;     Show all 15 Subjects
Abstract:
... As one of the most important indexes of internal quality testing of fruit, soluble solids content (SSC) is significant for its rapid and efficient nondestructive testing by using near infrared reflectance spectroscopy (NIRS). In this article, 126 cherry tomatoes were selected as the research object. Reflectance spectra data of 228 bands in cherry tomatoes were acquired by the near infrared spectro ...
DOI:
10.1111/jfpe.12884

15. Real-Time Study of the Disequilibrium Transfer in Vanadium Flow Batteries at Different States of Charge via Refractive Index Detection

Author:
Zhang, Yunong; Ma, Kaijie; Kuang, Xiangrong; Liu, Le; Sun, Yunxu; Xi, Jingyu
Source:
Journal of physical chemistry 2018 v.122 no.50 pp. 28550-28555
ISSN:
1932-7455
Subject:
refractive index,   etc   ; batteries; electrochemistry; electrolytes; physical chemistry; sulfates; vanadium;     Show all 7 Subjects
Abstract:
... Studying the disequilibrium transfer of the electrolyte in vanadium redox flow batteries is essential for the application of the batteries. Due to the lack of proper detection techniques, the real-time study of the disequilibrium transfer is difficult. In this paper, a real-time refractive index detector with high resolution is developed to study the material transfer in the positive electrolyte a ...
DOI:
10.1021/acs.jpcc.8b10165

16. Silicon Photonic Microring Resonator Arrays for Mass Concentration Detection of Polymers in Isocratic Separations

Author:
Mordan, Emily H.; Wade, James H.; Wiersma, Zach S. B.; Pearce, Eric; Pangburn, Todd O.; deGroot, A. Willem; Meunier, David M.; Bailey, Ryan C.
Source:
Analytical chemistry 2018 v.91 no.1 pp. 1011-1018
ISSN:
1520-6882
Subject:
refractive index,   etc   ; aerosols; detectors; gel chromatography; light scattering; molecular weight; photons; polystyrenes; silicon; solvents;     Show all 10 Subjects
Abstract:
... Molecular weight distribution (MWD) is often the most informative analytical parameter in polymer analysis, with gel permeation chromatography (GPC) being the most common approach for determining the MWD for polymer samples. Many industrially relevant polymers lack chromogenic or fluorogenic signatures, precluding use of spectroscopy-based detection. Universal detectors, such as evaporative light ...
DOI:
10.1021/acs.analchem.8b04263

17. Modeling the Temperature-Dependent Material Dispersion of Imidazolium-Based Ionic Liquids in the VIS-NIR

Author:
Arosa, Yago; Algnamat, Bilal S.; Rodríguez, Carlos Damián; Lago, Elena López; Varela, Luis Miguel; de la Fuente, Raúl
Source:
Journal of physical chemistry 2018 v.122 no.51 pp. 29470-29478
ISSN:
1932-7455
Subject:
refractive index,   etc   ; anions; cations; interferometry; ionic liquids; models; physical chemistry; sodium; temperature; uncertainty; wavelengths; white light;     Show all 12 Subjects
Abstract:
... A thorough analysis of the refractive index of 11 1-alkyl-3-methylimidazolium-based ionic liquids with three different anions, tetrafluoroborate (BF₄), bis(trifluoromethylsulfonyl)imide (NTf₂), and trifluoromethanesulfonate (OTf), is reported. Refractive indices were estimated, in the temperature interval from 298.15 to 323.15 K, using an Abbe refractometer to determine the value at the sodium D l ...
DOI:
10.1021/acs.jpcc.8b08971

18. The difference of two laser diffraction patterns as an indicator for post-depositional grain size reduction in loess-paleosol sequences

Author:
Schulte, P.; Lehmkuhl, F.
Source:
Palaeogeography, palaeoclimatology, palaeoecology 2018 v.509 pp. 126-136
ISSN:
0031-0182
Subject:
refractive index,   etc   ; clay; feldspar; fractionation; hydrolysis; loess; mica; mineral content; models; particle size distribution; silt; silt fraction; weathering;     Show all 13 Subjects
Abstract:
... Chemical and physical processes within aeolian sediments result in a reduction of the particle grain size. In loess sediments the post-depositional grain size variation is due to a reduction of the dominating coarse silt fraction in favor of the clay and fine silt fraction. Generally, there are two post-depositional fractionation processes: (1) the chemical weathering of silt sized minerals like m ...
DOI:
10.1016/j.palaeo.2017.02.022

19. Emerging investigator series: determination of biphasic core–shell droplet properties using aerosol optical tweezers

Author:
Gorkowski, Kyle; Donahue, Neil M.; Sullivan, Ryan C.
Source:
Environmental science 2018 v.20 no.11 pp. 1512-1523
ISSN:
2050-7895
Subject:
refractive index,   etc   ; Raman spectroscopy; aerosols; algorithms; atmospheric chemistry; chemistry; droplets; environmental science; glycerol; optical traps; particulates; separation; sodium chloride;     Show all 13 Subjects
Abstract:
... We present a new algorithm for the analysis of whispering gallery modes (WGMs) found in the cavity enhanced Raman spectra retrieved from optically tweezed droplets. Our algorithm improves the computational scaling when analyzing core–shell droplets (i.e. phase-separated or biphasic droplets) in the aerosol optical tweezers (AOT), making it computationally practical to analyze spectra collected at ...
DOI:
10.1039/c8em00166a

20. Liquid Combination with High Refractive Index Contrast and Fast Scanning Speeds for Electrowetting Adaptive Optics

Author:
Lim, Wei Yang; Supekar, Omkar D.; Zohrabi, Mo; Gopinath, Juliet T.; Bright, Victor M.
Source:
Langmuir 2018 v.34 no.48 pp. 14511-14518
ISSN:
1520-5827
Subject:
refractive index,   etc   ; contact angle; electric potential; electrodes; liquids; microscopy; prediction; remote sensing; wavelengths;     Show all 9 Subjects
Abstract:
... Electrowetting adaptive optical devices are versatile, with applications ranging from microscopy to remote sensing. The choice of liquids in these devices governs its tuning range, temporal response, and wavelength of operation. We characterized a liquid system, consisting of 1-phenyl-1-cyclohexene and deionized water, using both lens and prism devices. The liquids have a large contact angle tunin ...
DOI:
10.1021/acs.langmuir.8b02849