An International Research Journal

Vol 27 nos 8&9, 2018

AJP

SSN : 0971 - 3093

Vol 27, No 8&9, August-September, 2018

Special Issue of Asian Journal of Physics


dedicated to


Prof T Asakura


Asian Journal of Physics                                                                                                                Vol. 27 No 8&9, (2018), 00-00


Laser light scattering from rough glass liquid interface:
a case study of screening of adulterated diesel oils


Kai-Erik Peiponen,Boniphace Kanyathare and Benjamin Asamoah

Department of Physics and Mathematics, University of Eastern Finland, P. O. Box 111, FI-80101, Joensuu, Finland

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Light scattering is an important phenomenon in various technological applications. For the case of rough glass-liquid interface, it depends on the surface roughness and refractive index mismatch which leads to speckle pattern in the far field region, as well as wetting and variation in the local contact angle. The objective of this work was to study laser light scattering from both rough and smooth glass-liquid interfaces. This was accomplished using a modified handheld gloss meter (portable sensor) which enables recording of time-dependent backscattered laser light (TDBLL) through a software on an integrated laptop. As a feasibility study, authentic and adulterated diesel oils were considered. It is shown that, even though nonzero excess refractive index exists when diesel oils are mixed with kerosene, it has minor role in the dynamic process of liquid spreading. The spreading of liquid as well as excess refractive index depends on the intermolecular interactions which emerges in the measured signals. The different adulterated samples were ordered according to the increase in the volume of the adulterant (kerosene). Hence, the measured TDBLL signals for smooth and rough glass enables distinction between authentic and adulterated diesel oil samples.  © Anita Publications. All rights reserved.

Keywords: Light scattering,Refractive index, Backscattered laser light (TDBLL), Kerosine oil

References

  1.   Asakura T, in  Surface roughness measurement, (ed) Erf K, (Academic Press. INC, New York) 1978, pp 11-49.

  2.   Kanyathare B, Peiponen K-E, Appl Opt, 57(2018)2997-3002.

  3.   Kanyathare B, Peiponen K-E, Sensors, 18(2018)1551; doi.org/10.3390/s18051551

  4.   David R, Neumann A W, Langmuir, 29(2013)4551-4558.

  5.   Wolansky G, Marmur A, Langmuir, 14(1998)5292-5297.

  6.   Rosenholm J B, Peiponen K-E, Gornov E, Adv Colloid Interface Sci, 141(2008)48-65.

  7.   Kuivalainen K, Oksman A, Juuti M, Myller K, Peiponen K-E, Opt Rev, 17(2010)248-251.

  8.   Kanyathare B, Kuivalainen K, Räty J, Silfsten P, Bawuah P, Peiponen K.-E, JEOS:RP,14(2018)1-6.

  9.   Tanner L H, Opt Laser Technol, 8(1976)11-116.

10.   Rahimi P, Ward C A, Microgravity Sci Technol, 16(2005)231-235.

11.   Marmur A, J Colloid Interface Sci, 168(1994)40-46.

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Asian Journal of Physics                                                                                                                Vol. 27 No 8&9, (2018), 00-00


Three-dimensional correlation properties of speckles produced by

diffractal-illuminated diffusers


Makram Ibrahim1 and Jun Uozumi2

1National Research Institute of Astronomy and Geophysics (NRIAG), Helwan 11421 Cairo, Egypt

2Faculty of Engineering, Hokkai-Gakuen University, Sapporo, Hokkaido 064-0926, Japan

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Three-dimensional correlation properties were studied experimentally for speckled-speckle patterns produced by a rough surface on which the speckle field due to a random fractal object is incident. The speckled speckles observed in some lateral planes with different propagation distances did not exhibit a definite speckle size, having many intensity clusters with various sizes which tend to increase with an increase of the fractal dimension of the fractal object. The fractality across the lateral planes was confirmed by the existence of a power-law behavior in the intensity correlation, and was practically independent of the propagation distance. The longitudinal fractality was also revealed by finding a nearly power-law behavior in the longitudinal intensity correlation. It was shown that the longitudinal fractal dimension was larger than the lateral fractal dimension for each dimension of the fractal object, indicating an anisotropic fractality of the speckle field. © Anita Publications. All rights reserved.

Keywords: Speckled speckle, Fractal speckle, Speckle clustering, Longitudinal correlation, Correlation tail, Power law

References

    1.    Vicsek T, Fractal Growth Phenomena, (World Scientific, Singapore),1992.
    2.    Takayasu H, Fractals in Physical Science, (Manchester University, Manchester),1990.
    3.    Berry M V, J Phys A:Math Gen,12(1979)781-797.
    4.    Uozumi J, Asakura T, Current Trends in Optics, (ed) Dainty J C, (Academic Press, London), 1994, pp 83-93.
    5.    Uozumi J, Asakura T, Optical Storage and Retrieval — Memory, Neural Networks, and Fractals, (eds) Yu F T S, Jutamulia S, (Marcel Dekker, New York),

           1996, pp 283-320.
    6.    Uno K, Uozumi J, Asakura T, Opt Commun, 124(1996)16-22.
    7.    Uozumi J, Ibrahim M, Asakura T, Opt Commun,156(1998)350-358.
    8.    Funamizu H, Uozumi J, Opt Express, 15(2007)7415-7422.
    9.    Funamizu H, Uozumi J, Engineering Research (Bull Grad Sch Eng, Hokkai-Gakuen Univ), 5 (2005)63-71.
    10.  Funamizu H, Uozumi J, J Mod Opt, 54(2007)1511-1528.
    11.  Funamizu H, Uozumi J, Ishii Y, Opt Rev, 17(2010)191-194.
    12.  Funamizu H, Uozumi J, Aizu Y, J Opt, 15(2013) 035704; doi.org/10.1088/2040-8978/15/3/035704.
    13.  Miyasaka E, Uozumi J, Engineering Research (Bull Grad Sch Eng, Hokkai-Gakuen Univ), 12 (2012)12-23.
    14.  Uozumi J, Tsujino, Miyasaka E, Ibrahim M, Proc SPIE, 3749(1999)322-232.
    15.  Uozumi, Proc SPIE, 4242(2001)13-24.
    16.  O’Donnell K A, J Opt Soc Am A, 72(1982)1459-1463.
    17.  Barakat. R, Salawitch R J, Opt Acta, 33(1986)79-89.
    18.  Yoshimura T, Kato K, Nakagawa K, J Opt Soc Am A, 7(1990)2254-2259.
    19.  Yoshimura T, Fujiwara K, J Opt Soc Am A, 9(1992)91-95.
    20.  Okamoto T, Asakura T, Progress in Optics XXXIV, (ed) Wolf E (North-Holland, Amsterdam), 1995. 183-248.
    21.  Ibrahim M, Uozumi J, Asakura T, Opt Rev, 5(1998)129-137.

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Asian Journal of Physics                                                                                                                Vol. 27 No 8&9, (2018), 00-00

 

Joint transform correlation of compressed digital images


Joewono Widjaja

School of Physics, Suranaree University of Technology

Nakhon Ratchasima, 30000, Thailand

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Joint transform correlator (JTC) of digitally compressed images is studied by using low-contrast retinal fundus images. Simulation results show that the JTC has reliable recognition performance even though the compressed retinal images have low contrast and are corrupted by noise. © Anita Publications. All rights reserved.

Keywords: Joint transform correlator (JTC), Real-time JTC, Retinal images, Pixels

References

    1.   Yu FTS, Jutamulia S, Lin TW, Gregory DA, Appl Opt, 26(1987)1370-1372.
    2.   Jutamulia S, in Encyclopedia of Optical Engineering, (Marcel Dekker, New York), 2003, p. 984.
    3.   Alsamman A R, Alam M S, Opt Eng, 42(2003)560; doi.org/10.1117/1.1534589
    4.   Widjaja J, Appl Opt, 46(2007)8278-8283
    5.   Hill R B, in Biometrics: Personal Identification in Networked Society, (Springer, New York), 1999, p 123.
    6.   Jain A K, Ross A, Prabhakar S, IEEE Trans Circ Syst Video Technol, 14(2004)4-20.
    7.   Widjaja J, Suripon U, Opt Eng, 50(2011)098201; doi.org/10.1117/1.3626205
    8.   Pennebaker W B, Mitchell J L, JPEG Still Image Data Compression Standard, (Van Nostrand Reinhold, New York), 1993.
    9.   Roberge D, Sheng Y, Appl Opt, 33(1983)5287-5293

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Asian Journal of Physics                                                                                                                Vol. 27 No 8&9, (2018), 00-00


Optimal digitization of one-dimensional dynamic speckle signals for object identification


Takashi Okamoto and Jun Mizobe

Department of Systems Design and Informatics, Kyushu Institute of Technology,
680-4 Kawazu, Iizuka, Fukuoka 820-8502, Japan,

This article is dedicated to Prof T Asakura

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We investigate a method of object identification using dynamic laser speckles to identify scattering objects such as paper or plastic cards. The effects of sampling interval and quantization level of the speckle signals on authentication performance are examined by using the equal error rate (EER) as a measure of the accuracy of object identification. It is observed that a sampling interval of more than the correlation length of speckle fluctuations and a quantization of two or three bits offers the lowest EER for data sizes ranging from 100 to 500 bytes. The optimal quantization bit number is verified by experiments using plastic cards. © Anita Publications. All rights reserved.

References

  1.   Herder, C., Yu, M.-D., Koushanfar, F., and Devadas, S., “Physical unclonable functions and applications: A tutorial,” Procd IEEE, 102(2014)1126-1141.

  2.   Carnicer A, Javidi B, Optical security and authentication using nanoscale and thin-film structures, Adv Opt Photon,9(2017)218-256.

  3.   Pappu R, Recht B, Taylor J, Gershenfeld N, Physical one-way functions, Science, 297(2002)2026-030.

  4.   Buchanan J D R, Cowburn R P, Jausovec A.-V, Petit D, Seem, P, Xiong G, Atkinson D, Fenton K, Allwood D A, Bryan M T, Forgery: ‘Fingerprinting’

        documents and packaging, Nature, 436(2005)475; doi.org/10.1038/436475a

  5.   Škorić B, On the entropy of keys derived from laser speckle; Statistical properties of Gabor-transformed speckle, J Opt A: Pure Appl Opt, 10(2008)055304;

        doi.org/10.1088/1464-4258/10/5/055304          

  6.   Matoba O, Sawasaki T, Nitta K, Optical authentication method using a three-dimensional phase object with various wavelength readouts, Appl Opt,

        47(2008)4400-4404.

  7.   Seem P R, Buchanan J D R,  Cowburn R P, Impact of surface roughness on laser surface authentication signatures under linear and rotational displacements,

        Opt Lett, 34(2009)3175-3177.

  8.   Yamakoshi M, Rong X, Matsumoto T, An artifact-metrics which utilizes laser speckle patterns for plastic ID card surface, Procd SPIE, 7618(2010)76180B;

         doi.org/10.1117/12.842237

  9.    Yeh C H, Lee G, Lin C Y, Robust laser speckle authentication system through data mining techniques, IEEE Transactions on Industrial Informatics,

         11(2015)50-512. ___________________________________________________________________________________________________________________________________

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