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Journal articles on the topic 'Micro-reflectance'

Author: Grafiati

Published: 6 September 2023

Last updated: 31 July 2025

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1

Ullattil, Sudeep, Sudheesh Kakkarath, Vinod Viswambharanunnithan, and Suresh Padiyath Ramannair. "Investigations on the Influence of Surface Textures on Optical Reflectance of Multi-crystalline Silicone (MC-Si) Crystal Surfaces-Simulations and Experiments." International Journal of Renewable Energy Development 11, no. 2 (2021): 375–83. http://dx.doi.org/10.14710/ijred.2022.38538.

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MC-Si is the most widely used material for making solar PV cells. In spite of the considerable research on improving the conversion efficiency of MC-Si solar PV cells still it remains well within the range of 15-20%. Optical reflectance being the major loss of incident solar energy, efforts are being made to reduce the optical reflectance of solar cell surfaces. Among the several methods proposed, creation of well-defined surface topography on the cell surface remains a promising option. Micro/nano level features with various dimensions and distributions have been created on MC-Si crystal surf

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Feng, Guo Jin, Ping Li, Yu Wang, Cheng Li, and Li Zhao. "Reflectance of Micro-Structural Material on Au." Materials Science Forum 663-665 (November 2010): 154–57. http://dx.doi.org/10.4028/www.scientific.net/msf.663-665.154.

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The high absorption characteristics, the complex mechanism and the great potential application in detectors of micro-structural material aroused extensive attention. In order to understand the impact of the micro-structure, the optical simulation method based on Monte Carlo is used for reflection characteristics of micro-structural material with the cell of pyramid construction. In this simulation, the body material is made of gold, which can avoid the effect of tranmittance, with a number of 400 cells. The bottom square of each structure is 50×50 µm, and the height of cells is adjustable. The

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3

Kurihara, K., K. Fukui, T. Yanagawa, and A. Yamamoto. "Infrared micro optical reflectance spectra of InN." physica status solidi (c) 5, no. 6 (2008): 1759–61. http://dx.doi.org/10.1002/pssc.200778628.

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4

Shi, Jiarui, Qian Shen, Yue Yao, Fangfang Zhang, Junsheng Li, and Libing Wang. "Field Radiometric Calibration of a Micro-Spectrometer Based on Remote Sensing of Plateau Inland Water Colors." Applied Sciences 13, no. 4 (2023): 2117. http://dx.doi.org/10.3390/app13042117.

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Remote sensing reflectance (Rrs), which is currently measured mainly using the above-water approach, is the most crucial parameter in the remote sensing inversion of plateau inland water colors. It is very difficult to measure the Rrs of plateau inland unmanned areas; thus, we provide a measurement solution using a micro-spectrometer. Currently, commercial micro-spectrometers are not factory calibrated for radiation, and thus, a radiometric calibration of the micro-spectrometer is an essential step. This article uses an Ocean Optics micro-spectrometer (STS-VIS) and a traditional water spectrom

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Chen, Yong, Weiping Peng, Xiaofeng Hu, and Chen Zhang. "Functional Performance of Silicon with Periodic Surface Structures Induced by Femtosecond Pulsed Laser." Coatings 12, no. 6 (2022): 716. http://dx.doi.org/10.3390/coatings12060716.

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A micro/nano surface structure can produce specific properties, such as super hydrophilicity, low reflectance property, etc. A femtosecond laser-induced periodic surface structure is an important manufacturing process for the micro/nano structure. This research investigated the effects of scanning intervals and laser power on the surface morphology, wetting properties, and reflectance properties of LIPSS based on a silicon wafer. The results showed that the laser power had a significant effect on the surface morphology and wettability of silicon. With the increase of laser power, the surface r

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6

Lee, Yeonsu, Kim Jiwon, Sungmin Sim, Ignacio Llamas-Garro, and Jungmu Kim. "Air-Gap Interrogation of Surface Plasmon Resonance in Otto Configuration." Micromachines, 12, no. 8 (2021): 998. https://doi.org/10.3390/mi12080998.

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In this study, a micromachined chip in Otto configuration with multiple air-gaps (1.86 µm, 2.42 µm, 3.01 µm, 3.43 µm) was fabricated, and the resonance characteristics for each air-gap was measured with a 980 nm laser source. To verify the variability of the reflectance characteristics of the Otto configuration and its applicability to multiple gas detection, the air-gap between the prism and metal film was adjusted by using a commercial piezoactuator. We experimentally verified that the SPR characteristics of the Otto chip configuration have a dependence on the air-gap

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Neshchimenko, Vitaly V., Chun Dong Li, Mikhail M. Mikhailov, and Andrei Dudin. "Effect of the Surface Morphology of Zinc Oxide Particles on their Radiation Stability." Defect and Diffusion Forum 386 (September 2018): 338–42. http://dx.doi.org/10.4028/www.scientific.net/ddf.386.338.

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The effect of protons exposure on the diffuse reflectance spectra of the zinc oxide with different shape particles has been investigated. Particles were micro-, nanocrystals, star and flower shape particles. The synthesis of the particles was carried out by the hydrothermal method using zinc acetate chemicals. The surface morphology, surface area and crystal structure of the particles have been investigated. Evaluating the changes in spectral reflectance it was found that the radiation stability of the micro particles is higher than the radiation stability of the other nanostructured particles

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8

Zheng, Xiao Dong, Yan Zhong Ye, and Lin Fang Shen. "The Measurements of Spectral Reflectance Spatial Distribution on Mc-Si Solar Cell Surface." Applied Mechanics and Materials 241-244 (December 2012): 2184–87. http://dx.doi.org/10.4028/www.scientific.net/amm.241-244.2184.

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Measurement results of spectral reflectance spatial distribution on multi-crystalline silicon solar cells surface are presented. The optical measurement apparatus employs a specific designed micro-spectral reflectance meter. It is suitable for working in visible wavelength range; measurable sample size can be as small as 0.06mm. Results of reflectance distribution on mc-Si solar cell are presented as a spatial sampling interval of 0.1 mm. The peak values of spectral reflectance appear about 400nm wavelength and vary from 10% to 30% with the spatial position on solar cell.

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9

Lastras-Martínez, L. F., O. del Pozo-Zamudio, R. Herrera-Jasso, et al. "Micro reflectance difference techniques: Optical probes for surface exploration." physica status solidi (b) 249, no. 6 (2012): 1119–23. http://dx.doi.org/10.1002/pssb.201100738.

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10

M.Sakthivel*1, Manoj Hari2 &. Dharani G3. "ATMOSPHERIC CORRECTION OF VISIBLE CHANNEL OF SATELLITE IMAGE FROM INSAT-3D IMAGER USING SECOND SIMULATION OF THE SATELLITE SIGNAL IN THE SOLAR SPECTRUM - 6S MODEL." GLOBAL JOURNAL OF ENGINEERING SCIENCE AND RESEARCHES 5, no. 11 (2018): 137–49. https://doi.org/10.5281/zenodo.1493914.

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Atmospheric correction is an important pre-processing step required in many satellite remote sensing applications. Although there are several available atmospheric correction algorithms, there is limited literature available that examines their effectiveness using in situ measurements from spectroradiometers to retrieve reflectance. The aim of this study is to atmospherically correct the satellite image using Second Simulation of a Satellite Signal in the Solar Spectrum-6S Radiative Transfer Model and to conduct an accuracy assessment of the results using in-situ measurements from spectroradio

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11

Guo, Ting Liang, Guo Jin Feng, and Ting Ting Guo. "Absorption Simulation of Micro-Structual Material on BK7." Key Engineering Materials 467-469 (February 2011): 873–76. http://dx.doi.org/10.4028/www.scientific.net/kem.467-469.873.

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The absorption characteristics of micro-structural material, such as “black silicon”, aroused extensive attention. In order to understand the impact of the micro-structure, based on Monte Carlo method, the optical simulation is used for absorption characteristics of micro-structural material. In this paper, the body material used for simulation is a kind of glass, BK7, which has been widely used. And, there are a number of 400 structual cells in the model. The bottom square of each cell is fixed to 50×50 µm, and the height of cells is adjustable. For each height, the reflectance, transmittance

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12

Ganesh, T., K. Perumal, R. Kumar, and N. Bhaskar. "Effect of Thickness on Micro-Structural and Optical Properties of Al-Doped ZnO Films Prepared by Sol-Gel Spin Coating." Nano Hybrids and Composites 17 (August 2017): 171–78. http://dx.doi.org/10.4028/www.scientific.net/nhc.17.171.

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Aluminium (Al) doped Zinc oxide (ZnO) thin films of different thicknesses were prepared on glass substrates by sol-gel spin coating method. The effect of thicknesses on micro-structural and optical properties was investigated for transparent conducting oxide (TCO) application in solar cells and other optoelectronic applications. Grazing incidence x-ray diffraction (GIXRD) showed maximum orientation along (002) plane of c-axis. The variation of different structural parameters like crystallite size, micro-strain, c-axis strain, dislocation density as a function of film thickness was investigated

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13

Sun, Jian, Wei Li Zhang, Kui Yi, and Jian Da Shao. "High-Reflectance Coatings at 193nm." Advanced Materials Research 631-632 (January 2013): 110–15. http://dx.doi.org/10.4028/www.scientific.net/amr.631-632.110.

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As an important component in 193nm laser system, high-reflectance (HR) coatings with excellent optical and mechanical properties are needed urgently. In this study, we designed and produced three different HR coatings at 193nm, Al2O3/ AlF3 coating, LaF3/ AlF3 coating and a double stack mirror with combination of Al2O3/ AlF3 and LaF3/ AlF3. With 14 layer pairs, the reflectance of Al2O3/ AlF3 coating could reach 98% which could not get higher duo to the absorption of Al2O3. The reflectance of LaF3/ AlF3 coatings could achieve 98.13% with 15 layer pairs. When the layer pair increased to 16, the r

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14

Sugiyama, Toyohiko, Hiroshi Kakiuchida, and Masayoshi Ohashi. "Visible and Infra-Red Reflectance of Several Typical Japanese Glazes for Roof Tiles and Wall Tiles." Advances in Science and Technology 68 (October 2010): 96–101. http://dx.doi.org/10.4028/www.scientific.net/ast.68.96.

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. Tile coating with a higher reflectance of sun light are effective in mitigating heat-island phenomenon. Covering the surface of the ground or the exterior of buildings with such high reflectance coatings has attracted attention because of its high cost effectiveness. Recently, companies producing Japanese roofing tiles or wall tiles have been trying to develop high reflectance glaze for their products. However, while we have enormous amounts of data on visible reflectance measured through the study of glaze coloration, there are comparatively less data pertaining to infrared reflectance on p

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15

Schwinger, Laura, Sebastian Lehmann, Lukas Zielbauer, Benedikt Scharfe, and Thorsten Gerdes. "Aluminum Coated Micro Glass Spheres to Increase the Infrared Reflectance." Coatings 9, no. 3 (2019): 187. http://dx.doi.org/10.3390/coatings9030187.

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The reflective properties of micro glass spheres (MGS) such as Solid Micro Glass Spheres (SMGS, “glass beads”) and Micro Hollow Glass Spheres (MHGS, “glass bubbles”) are utilized in various applications, for example, as retro-reflector for traffic road stripe paints or facade paints. The reflection behavior of the spheres can be further adapted by coating the surfaces of the spheres, e.g., by titanium dioxide or a metallic coating. Such coated spheres can be employed as, e.g., mid infrared (MIR)-reflective additives in wall paints to increase the thermal comfort in rooms. As a result, the dema

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16

Folland, Thomas G., Tobias W. W. Maß, Joseph R. Matson, et al. "Probing hyperbolic polaritons using infrared attenuated total reflectance micro-spectroscopy." MRS Communications 8, no. 04 (2018): 1418–25. http://dx.doi.org/10.1557/mrc.2018.205.

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17

Hacura, A., R. Wrzalik, and A. Matuszewska. "Application of reflectance micro-infrared spectroscopy in coal structure studies." Analytical and Bioanalytical Chemistry 375, no. 2 (2003): 324–26. http://dx.doi.org/10.1007/s00216-002-1645-8.

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18

Miyazaki, Koji, Masahiro Kihara, Ryosuke Sameshima, and Hiroshi Tsukamoto. "G225 Reflectance of close-packed structures of silica micro-spheres." Proceedings of the Thermal Engineering Conference 2007 (2007): 415–16. http://dx.doi.org/10.1299/jsmeted.2007.415.

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19

Sen, Bhupendra K., Swapnil Tiwari, Manas Kanti Deb, and Shamsh Pervez. "Nanogram level quantification of molybdenum(vi) by novel hyphenated SDME/DRS-FTIR in human biological fluid." Analytical Methods 7, no. 22 (2015): 9474–81. http://dx.doi.org/10.1039/c5ay01801c.

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A novel hyphenated single-drop micro-extraction (SDME) diffuse-reflectance Fourier-transform infrared spectroscopy (DRS-FTIR) technique was employed for the quantification of hexavalent molybdenum, i.e., Mo(vi) in human blood serum and urine.

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20

Zhu, Yihua, and Daniel Fried. "Measurement of the Depth of Lesions on Proximal Surfaces with SWIR Multispectral Transillumination and Reflectance Imaging." Diagnostics 12, no. 3 (2022): 597. http://dx.doi.org/10.3390/diagnostics12030597.

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The aim of this study was to compare the diagnostic performance of dual short-wavelength infrared (SWIR) transillumination and reflectance multispectral imaging devices for imaging interproximal lesions with radiography using extracted teeth that had been imaged with micro-computed tomography (microCT). Thirty-six extracted teeth with 67 lesions on the proximal surfaces were imaged using a newly fabricated SWIR multispectral proximal transillumination and reflectance imaging device along with an existing SWIR multispectral occlusal transillumination and reflectance device. The ability of SWIR

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21

Gong, Chizhang, Henning Buddenbaum, Rebecca Retzlaff, and Thomas Udelhoven. "An Empirical Assessment of Angular Dependency for RedEdge-M in Sloped Terrain Viticulture." Remote Sensing 11, no. 21 (2019): 2561. http://dx.doi.org/10.3390/rs11212561.

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For grape canopy pixels captured by an unmanned aerial vehicle (UAV) tilt-mounted RedEdge-M multispectral sensor in a sloped vineyard, an in situ Walthall model can be established with purely image-based methods. This was derived from RedEdge-M directional reflectance and a vineyard 3D surface model generated from the same imagery. The model was used to correct the angular effects in the reflectance images to form normalized difference vegetation index (NDVI) orthomosaics of different view angles. The results showed that the effect could be corrected to a certain scope, but not completely. The

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22

Habka, Nada, Véronique Soulière, Jean Marie Bluet, Maher Soueidan, Gabriel Ferro, and Yves Monteil. "Optical Investigation of Cubic SiC Layers Grown on Hexagonal SiC Substrates by CVD and VLS." Materials Science Forum 556-557 (September 2007): 403–6. http://dx.doi.org/10.4028/www.scientific.net/msf.556-557.403.

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We report an optical investigation of cubic Silicon Carbide (3C-SiC) layers grown on 6H-SiC substrates by Chemical Vapour Deposition and Vapour-Liquid-Solid mechanism. Micro- Infrared reflectance ('-IR), micro-Raman ('-Raman) and low temperature photoluminescence spectroscopies were used for the characterisation of such layers. '-IR measurements showed unusual optical behaviour of 3C-SiC layers. The difference of refraction index between the 3C-SiC film and the 6H-SiC substrate cannot explain this result. The experimental '-IR reflectance spectrum was modelled by introducing a thin (thickness

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23

Bassani, C., C. Manzo, F. Braga, M. Bresciani, C. Giardino, and L. Alberotanza. "Impact of the aerosol type on HICO™ atmospheric correction in coastal waters." Atmospheric Measurement Techniques Discussions 7, no. 5 (2014): 5147–72. http://dx.doi.org/10.5194/amtd-7-5147-2014.

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Abstract. The aim of this work is to evaluate the radiative impact of the aerosol type on the results of the atmospheric correction of HICO™ (Hyperspectral Imager for the Coastal Ocean) hyperspectral data. The reflectance was obtained by using the HICO@CRI (HICO ATmospherically Corrected Reflectance Imagery) algorithm, a physically-based atmospheric correction algorithm developed specifically for HICO™ data by adapting the vector version of the Second Simulation of a Satellite Signal in the Solar Spectrum (6SV) radiative transfer code. The HICO@CRI algorithm was applied on six HICO™ images acq

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Pérez-López, Antonio José, Luis Noguera-Artiaga, Patricia Navarro, Pablo Mompean, Alejandro Van Lieshout, and José Ramón Acosta-Motos. "Effects of Hyperbaric Micro-Oxygenation on the Color, Volatile Composition, and Sensory Profile of Vitis vinifera L. cv. Monastrell Grape Must." Fermentation 11, no. 7 (2025): 380. https://doi.org/10.3390/fermentation11070380.

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Color, aroma, and overall sensory quality in red wines are largely influenced by oxygen availability during fermentation. This study evaluated the effects of micro-oxygenation under hyperbaric conditions on the physicochemical, chromatic, volatile, and sensory properties of Vitis vinifera L. cv. Monastrell grape must. Grape clusters were manually harvested and fermented under controlled conditions, applying micro-oxygenation treatments at two fermentation stages (day 3 and day 13) within a hyperbaric chamber. Physicochemical analyses, CIELab color measurements, visible reflectance spectra, GC-

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25

Tang, Shu Ling, Da Zhen Tang, Hao Xu, Shu Tao, Yuan Fang, and Li Jun Gao. "Adsorption Characteristics of Different Stratification in the Coal Reservoirs of Southern Qinshui Basin and its Main Controlling Factors." Advanced Materials Research 915-916 (April 2014): 1103–7. http://dx.doi.org/10.4028/www.scientific.net/amr.915-916.1103.

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Based on previous measured data and adsorption isotherms experiment of six coal samples from different stratification of the southern Qinshui basin, discussed the diversity between different stratification on adsorption characteristics and its main controlling factors. The results show that: In the macro level, bright coal layer has the highest adsorption capacity, Langmuir volume (VL) is up to 40m3/t ; the adsorption capacity of dull coal and semi-dull coal is relatively low. By analyzing the relationship between the Langmuir volume of coal petrography and various factors, discovering the Lan

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26

ZARROUG, AHMED, LOTFI DERBALI, RACHID OUERTANI, WISSEM DIMASSI, and HATEM EZZAOUIA. "COMBINED EFFECT OF MECHANICAL GROOVING AND STAIN-ETCHED SURFACE ON OPTICAL AND ELECTRICAL PROPERTIES OF CRYSTALLINE SILICON SUBSTRATES." Surface Review and Letters 21, no. 03 (2014): 1450041. http://dx.doi.org/10.1142/s0218625x14500413.

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This paper investigates the combined effect of mechanical grooving and porous silicon (PS) on the front surface reflectance and the electronic properties of crystalline silicon substrates. Mechanical surface texturization leads to reduce the cell reflectance, enhance the light trapping and augment the carrier collection probability. PS was introduced as an efficient antireflective coating (ARC) onto the front surface of crystalline silicon solar cell. Micro-periodic V-shaped grooves were made by means of a micro-groove machining process prior to junction formation. Subsequently, wafers were su

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27

Vermeulen, Marc, Katherine Eremin, Georgina Rayner, et al. "Micro reflectance imaging spectroscopy for pigment identification in painting cross sections." Microscopy and Microanalysis 27, S1 (2021): 2806–8. http://dx.doi.org/10.1017/s1431927621009818.

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28

Grunwald, R., and U. Griebner. "Segmented solid-state laser resonators with graded reflectance micro-mirror analysis." Pure and Applied Optics: Journal of the European Optical Society Part A 3, no. 4 (1994): 435–40. http://dx.doi.org/10.1088/0963-9659/3/4/003.

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29

Harthcock, M. A., L. A. Lentz, B. L. Davis, and K. Krishnan. "Applications of Transmittance and Reflectance Micro/FT-IR to Polymeric Materials." Applied Spectroscopy 40, no. 2 (1986): 210–14. http://dx.doi.org/10.1366/0003702864509529.

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Recent advances in FT-IR microsampling techniques have increased the specificity with which infrared spectra of microscopic samples or regions of microscopic samples can be obtained. In this paper, application of microsampling techniques to several problems involving polymeric materials will be presented. The technique using transmittance methods is shown to be a fast method for isolating two particles in a heterogeneous mixture and obtaining infrared spectra to conclusively identify the particles. The infrared absorption spectra of several layers of a multilayer polymer structure ranging in s

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Shen, Wanfu, Chunguang Hu, Shuai Li, and Xiaotang Hu. "Using high numerical aperture objective lens in micro-reflectance difference spectrometer." Applied Surface Science 421 (November 2017): 535–41. http://dx.doi.org/10.1016/j.apsusc.2016.12.166.

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31

Schulz, H., and B. Kropp. "Micro spectroscopy FTIR reflectance examination of paint binders on ground chalk." Fresenius' Journal of Analytical Chemistry 346, no. 1-3 (1993): 114–22. http://dx.doi.org/10.1007/bf00321394.

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32

Liu, Yan, Yu Ning, Wensheng Cai, and Xueguang Shao. "Micro-analysis by near-infrared diffuse reflectance spectroscopy with chemometric methods." Analyst 138, no. 21 (2013): 6617. http://dx.doi.org/10.1039/c3an01232h.

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Das, Bikash K., Roshan Gupta, and Dambarudhar Mohanta. "Non-iridescent structural colouration in three distinct colours of paperflower petals." Journal of Physics: Conference Series 2957, no. 1 (2025): 012006. https://doi.org/10.1088/1742-6596/2957/1/012006.

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Abstract The topic of structural colour is crucial in the current world as it affects our day-today lives, both in the form of household items and appliances, as well as in industrial settings. The present work delves into the significance of microstructures in determining the visual appearance of three distinct colours of paperflower (Bougainvillea) petals: pink, yellow, and white. With the aid of a field emission scanning electron microscope, we study the surface morphology of the specimen. We affirm that micro-papillae and nanostructures present on the surface dictate the colour of the afor

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Dal Fovo, Alice, Marina Martínez-Weinbaum, Mohamed Oujja, Marta Castillejo, and Raffaella Fontana. "Reflectance Spectroscopy as a Novel Tool for Thickness Measurements of Paint Layers." Molecules 28, no. 12 (2023): 4683. http://dx.doi.org/10.3390/molecules28124683.

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A major challenge in heritage science is the non-invasive cross-sectional analysis of paintings. When low-energy probes are used, the presence of opaque media can significantly hinder the penetration of incident radiation, as well as the collection of the backscattered signal. Currently, no technique is capable of uniquely and noninvasively measuring the micrometric thickness of heterogeneous materials, such as pictorial layers, for any painting material. The aim of this work was to explore the possibility of extracting stratigraphic information from reflectance spectra obtained by diffuse ref

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Pontes, F. M., S. H. Leal, P. S. Pizani, et al. "Structural phase evolution of strontium-doped lead titanate thin films prepared by the soft chemical technique." Journal of Materials Research 18, no. 3 (2003): 659–63. http://dx.doi.org/10.1557/jmr.2003.0087.

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Strontium-modified lead titanate thin films with composition Pb1−xSrxTiO3 were grown on Pt/Ti/SiO2/Si substrates using the polymeric precursor method. The structural phase evolution as a function of the Sr contents was studied using micro-Raman scattering, specular reflectance infrared Fourier transform spectroscopy, and x-ray diffraction. The results showed a gradual change from tetragonal to cubic structure, the transition occurring at about x = 0.58. The infrared reflectance spectra showed that the frequency of several peaks decreases as the strontium concentration increases. These features

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SARKAR, ADITI, ARNAB GANGOPADHYAY, and A. SARKAR. "LEFT-HANDED MAXWELLIAN BEHAVIOR OF NATURAL MICA." Modern Physics Letters B 25, no. 30 (2011): 2323–33. http://dx.doi.org/10.1142/s0217984911027534.

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In this work, meta-material like behavior of natural Mica are studied. This work makes an attempt to analyze the left-handed Maxwellian (LHM) properties of Mica. The investigations carried out on natural Mica specimen are optical reflectance, optical absorbance and DC current–voltage-characteristics (CVC). Optical reflectance of Mica sheet with plane polarized monochromatic light shows distinct difference with conventional theoretical results. The DC CVC also measured with complete electromagnetic shielding. There exists a clear difference in DC characteristic for presence and absence of stray

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Arslan, Halil, and Yasar Baris Dolukan. "Determination of the optical properties of bovine liver tissue using integrating sphere technique." Academic Perspective Procedia 1, no. 1 (2018): 248–52. http://dx.doi.org/10.33793/acperpro.01.01.46.

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The optical properties (absorption and reduced scattering coefficients, &amp;micro;a and &amp;micro;s&amp;rsquo;) of bovine liver tissue for 635 nm has been determined by using integrating sphere and inverse adding-doubling (IAD) techniques. For this purpose, total reflectance and total transmittance values of bovine liver tissue sample, which is placed between two microscope slides, have been measured by using single-sphere system. The measured values have been used as input parameters for IAD program to extract the &amp;micro;a and &amp;micro;s&amp;rsquo; of the sampl

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Revelo-Luna, David, Aldemar Reyes-Trujillo, and Miguel Peña-Varón. "Spectral and thermal response of Heliconia psittacorum species to induced water stress." Agronomía Colombiana 36, no. 3 (2018): 237–47. http://dx.doi.org/10.15446/agron.colomb.v36n3.70379.

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An important limitation in agricultural production is stress resulting from water deficit. Flower production and postharvest life both decrease in Heliconia psittacorum affected by water stress. Remote sensing provides tools for estimating the water status of plant species using spectral information in the visible and infrared range. This paper presents a study of reflectance in the 350-800 nm range and the response in the thermal infrared of leaf tissue under different irrigation regimes. For the measurement of reflectance, an OceanOptics® Micro-Spectrometer was used, while for the thermal in

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Zhu, Yihua, Chung Ng, Oanh Le, Yi-Ching Ho, and Daniel Fried. "Diagnostic Performance of Multispectral SWIR Transillumination and Reflectance Imaging for Caries Detection." Diagnostics 13, no. 17 (2023): 2824. http://dx.doi.org/10.3390/diagnostics13172824.

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The aim of this clinical study was to compare the diagnostic performance of dual short wavelength infrared (SWIR) occlusal transillumination and reflectance multispectral imaging with conventional visual assessment and radiography for caries detection on premolars scheduled for extraction for orthodontics reasons. Polarized light microscopy (PLM) and micro-computed tomography (microCT) performed after tooth extraction were used as gold standards. The custom-fabricated imaging probe was 3D-printed and the imaging system employed a SWIR camera and fiber-optic light sources emitting light at 1300

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Yin, Jingbo, Huangping Yan, Rui Zhou, Yuanzhe Li, and Anna He. "Thermal-Assisted Laser Fabrication of Broadband Ultralow Reflectance Surface by Combining Marangoni Flow with In Situ Deposition." Nanomaterials 13, no. 3 (2023): 480. http://dx.doi.org/10.3390/nano13030480.

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Functional surfaces with broadband ultralow optical reflectance have many potential applications in the fields of enhancing solar energy utilization, stray light shielding, infrared stealth, and so on. To fabricate broadband anti-reflection surfaces with low cost, high quality, and more controllability, a strategy of preparing multi-scale structures by thermal-assisted nanosecond laser was proposed. This strategy combines laser ablation with Marangoni flow of molten materials and in situ deposition of nanoparticles. The thermal-assisted strategy increases the depth to width ratio of the anti-r

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Lou, Rui, Guangying Li, Xu Wang, et al. "Antireflective and Superhydrophilic Structure on Graphite Written by Femtosecond Laser." Micromachines 12, no. 3 (2021): 236. http://dx.doi.org/10.3390/mi12030236.

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Antireflection and superhydrophilicity performance are desirable for improving the properties of electronic devices. Here, we experimentally provide a strategy of femtosecond laser preparation to create micro-nanostructures on the graphite surface in an air environment. The modified graphite surface is covered with abundant micro-nano structures, and its average reflectance is measured to be 2.7% in the ultraviolet, visible and near-infrared regions (250 to 2250 nm). The wettability transformation of the surface from hydrophilicity to superhydrophilicity is realized. Besides, graphene oxide (G

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Choi, Gyu-Jong, Hwa-Young Kim, and Jung-Hwan Ahn. "Study on Algorithm of Micro Surface Roughness Measurement Using Laser Reflectance Light." Transactions of the Korean Society of Mechanical Engineers A 32, no. 4 (2008): 347–53. http://dx.doi.org/10.3795/ksme-a.2008.32.4.347.

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Lastras-Martínez, L. F., R. Herrera-Jasso, N. A. Ulloa-Castillo, et al. "Optical characterization of orientation-patterned GaP structures by micro reflectance difference spectroscopy." Journal of Applied Physics 114, no. 17 (2013): 173504. http://dx.doi.org/10.1063/1.4828737.

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Tsai, Yu-Hung, Hoang-Yan Lin, Mao-Kai Huang, Yuan-Zhen Zhuang, Yu-Hsin Huang, and Kuan-Heng Lin. "52‐3: Enhancing Micro‐LED Display Efficiency with Reduced Ambient Light Reflectance." SID Symposium Digest of Technical Papers 55, no. 1 (2024): 713–16. http://dx.doi.org/10.1002/sdtp.17625.

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Shrinking LEDs reduces Internal Quantum Efficiency (IQE) and challenges light collection[1]. This study employs LightTools® for geometric optical simulations to create a secondary optical structure with reflector and a black matrix, enhancing Micro‐LED efficiency. This approach significantly reduces light emission loss from the original 40% to 4.54%. and ambient light reflection from the original 25% to 4.85%.

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Zhou, Qin, Xianming Xiao, Lei Pan, and Hui Tian. "The relationship between micro-Raman spectral parameters and reflectance of solid bitumen." International Journal of Coal Geology 121 (January 2014): 19–25. http://dx.doi.org/10.1016/j.coal.2013.10.013.

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Yang, Lan Tian. "Hybrid Microstructures on Si Surface Formed by Nanosecond Pulse Laser for Broadband Antireflection." Advanced Materials Research 983 (June 2014): 84–89. http://dx.doi.org/10.4028/www.scientific.net/amr.983.84.

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In this paper, a hybrid quasi-micro-pyramid structure is fabricated via nanosecond pulse laser micro-processing, which demonstrates a 15% drop in average reflectance as compared to the uniform quasi-micro-pyramid structures. The influences of laser fluence, pulse number, and designed pitch are also studied experimentally and systematically. The results show that reflection increases with the pattern pitch, decreases with pulse number, and a minimum in reflection is reached at a laser fluence of 4.83 J/cm2. The method here demonstrated provides an alternative and low-cost solution for broadband

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Yalcin, Refet Ali, Karl Joulain, and Jèrèmie Drevillon. "Effect of optical properties and micro-structure on radiative cooling performance." EPJ Web of Conferences 309 (2024): 13004. http://dx.doi.org/10.1051/epjconf/202430913004.

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The performance of radiative coolers are directly affected by their constituting materials’ optical properties and micro-structures. Here, we investigate the effects of optical properties and microstructure on radiative cooling performance, namely solar reflectance and emittance at 9-13 μm region. The aim is to provide guidance to reach the ideal radiative cooler. Inspected phenomena are included but not limited to Mie resonance, light scattering, effective medium theory.

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Tirelli, C., C. Manzo, G. Curci, and C. Bassani. "EVALUATION OF THE AEROSOL TYPE EFFECT ON THE SURFACE REFLECTANCE RETRIEVAL USING CHRIS/PROBA IMAGES OVER LAND." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-7/W3 (April 30, 2015): 1311–16. http://dx.doi.org/10.5194/isprsarchives-xl-7-w3-1311-2015.

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Surface reflectance has a central role in the analysis of land surface for a broad variety of agricultural, geological and urban studies. An accurate atmospheric correction, obtained by an appropriate selection of aerosol type and loading, is the first requirement for a reliable surface reflectance estimation. The aerosol type is defined by its micro-physical properties, while the aerosol loading is described by optical thickness at 550 nm. The aim of this work is to evaluate the radiative impact of the aerosol model on the surface reflectance obtained from CHRIS (Compact High Resolution Imagi

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Boehmler, Jayne, S. Loría-Salazar, Chris Stevens, et al. "Development of a Multispectral Albedometer and Deployment on an Unmanned Aircraft for Evaluating Satellite Retrieved Surface Reflectance over Nevada’s Black Rock Desert." Sensors 18, no. 10 (2018): 3504. http://dx.doi.org/10.3390/s18103504.

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Bright surfaces across the western U.S. lead to uncertainties in satellite derived aerosol optical depth (AOD) where AOD is typically overestimated. With this in mind, a compact and portable instrument was developed to measure surface albedo on an unmanned aircraft system (UAS). This spectral albedometer uses two Hamamatsu micro-spectrometers (range: 340–780 nm) for measuring incident and reflected solar radiation at the surface. The instrument was deployed on 5 October 2017 in Nevada’s Black Rock Desert (BRD) to investigate a region of known high surface reflectance for comparison with albedo

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Zhang, Qiang, Yongguang Zhao, Lei Zhang, et al. "On-Orbit Radiometric Calibration of Hyperspectral Sensors on Board Micro-Nano Satellite Constellation Based on RadCalNet Data." Remote Sensing 14, no. 19 (2022): 4720. http://dx.doi.org/10.3390/rs14194720.

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The stability and accuracy of the on-orbit radiometric calibration of hyperspectral sensors are prerequisites for the quantitative application of satellite hyperspectral data. The Zhuhai-1 micro-nano satellite constellation is composed of eight hyperspectral satellite missions. The Orbita Hyperspectral Sensor (OHS) on board each satellite has a gradient filter spectroscopic design. When observing the Earth, eight integration stages can be set for each band according to different lighting conditions. Due to high manufacturing costs, OHSs are not equipped with on-board calibration devices. There

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