TITLE

Precision and accuracy in film stiffness measurement by Brillouin spectroscopy

AUTHOR(S)
Beghi, M. G.; Di Fonzo, F.; Pietralunga, S.; Ubaldi, C.; Bottani, C. E.
PUB. DATE
May 2011
SOURCE
Review of Scientific Instruments;May2011, Vol. 82 Issue 5, p053107
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The interest in the measurement of the elastic properties of thin films is witnessed by a number of new techniques being proposed. However, the precision of results is seldom assessed in detail. Brillouin spectroscopy (BS) is an established optical, contactless, non-destructive technique, which provides a full elastic characterization of bulk materials and thin films. In the present work, the whole process of measurement of the elastic moduli by BS is critically analyzed: experimental setup, data recording, calibration, and calculation of the elastic moduli. It is shown that combining BS with ellipsometry a fully optical characterization can be obtained. The key factors affecting uncertainty of the results are identified and discussed. A procedure is proposed to discriminate factors affecting the precision from those affecting the accuracy. By the characterization of a model transparent material, silica in bulk and film form, it is demonstrated that both precision and accuracy of the elastic moduli measured by BS can reach 1% range, qualifying BS as a reference technique.
ACCESSION #
62010746

 

Related Articles

  • Stiffness, working stroke, and force of single-myosin molecules in skeletal muscle: elucidation of these mechanical properties via nonlinear elasticity evaluation. Kaya, Motoshi; Higuchi, Hideo // Cellular & Molecular Life Sciences;Nov2013, Vol. 70 Issue 22, p4275 

    In muscles, the arrays of skeletal myosin molecules interact with actin filaments and continuously generate force at various contraction speeds. Therefore, it is crucial for myosin molecules to generate force collectively and minimize the interference between individual myosin molecules....

  • Evaluation of Longitudinal Modulus of Elasticity in Wood Species for Structural Application. Chahud, Eduardo; Branco, Luiz A. Melgaço N.; Christoforo, André L.; Lahr, Francisco A. Rocco; Battistelle, Rosane A. G.; Valarelli, Ivaldo D. // Advanced Materials Research;2014, Vol. 1025-1026, p192 

    This research aimed to investigate possible differences in values of longitudinal modulus of elasticity (E) for wood species usually employed for structural purposes, as Castanheira (Bertholletia excelsa), Cambará (Erisma uncinatum), Cumaru (Dipteryx odorata), Jatobá (Hymenaea...

  • Room-temperature Coulomb fingerprints in thin films of a Cu+SiO2 composite material. Gurevich, S. A.; Horenko, V. V.; Zarayskaya, T. A.; Kupriyanov, L. Yu.; Kupriyanov, M. Yu.; Vasilevskaya, T. N.; Vyshenski, S. V. // JETP Letters;11/25/96, Vol. 64 Issue 10, p736 

    We study the room-temperature electrical properties of thin ([bar_over_tilde:_approx._equal_to]200 nm) SiO2 films with inclusions of Cu globules with radius [bar_over_tilde:_approx._equal_to]1 nm and separation [bar_over_tilde:_approx._equal_to]20 nm. Current�voltage curves taken across the...

  • Comparison of ultrathin SiO[sub 2] films grown by thermal oxidation in an N[sub 2]O ambient with.... Sug Bong Kang; Sun-Oo Kim // Applied Physics Letters;11/7/1994, Vol. 65 Issue 19, p2448 

    Compares ultrathin SiO[sub 2] films grown by thermal oxidation in an N[sub 2]O ambient with those in a 33% O[sub 2]/N[sub 2] ambient. Determination of the formation of an oxynitride layer in the interface of SiO[sub 2] and Si substance; Electrical properties of the N[sub 2]O oxide films; Factor...

  • Infrared ellipsometry study of evaporated SiO2 films: Matrix densification, porosity, water... Brunet-Bruneau, A.; Rivory, J.; Rafin, B.; Robic, J. Y.; Chaton, P. // Journal of Applied Physics;8/1/1997, Vol. 82 Issue 3, p1330 

    Examines the dielectric function of silicon dioxide (SiO2) thin films deposited by electron-beam evaporation on silicon substrates using infrared ellipsometry. Experimental procedures; Stretching mode of absorption band; Comparison of estimated and measured film density and visible refractive...

  • Mechanism for anneal-induced interfacial charging in SiO[sub 2] thin films on Si. Warren, W.L.; Vanheusden, K. // Applied Physics Letters;5/20/1996, Vol. 68 Issue 21, p2993 

    Examines the hydrogen-induced positive charging in silicon dioxide thin films on silicon structures. Response of the charge to thermal annealing and electron injection; Formation of positively charged over-coordinated oxygen centers; Origin of the fixed oxide charged formed during the oxidation...

  • Non-invasive determination of the complete elastic moduli of spider silks. Koski, Kristie J.; Akhenblit, Paul; McKiernan, Keri; Yarger, Jeffery L. // Nature Materials;Mar2013, Vol. 12 Issue 3, p262 

    Spider silks possess nature's most exceptional mechanical properties, with unrivalled extensibility and high tensile strength. Unfortunately, our understanding of silks is limited because the complete elastic response has never been measured-leaving a stark lack of essential fundamental...

  • Hydromechanical Coupling Behavior Effects on The Bisotun Epigraph Damaging Process. Karimnia, Mehdi; Shahkarami, Amir // Journal of Applied Sciences;2011, Vol. 11 Issue 15, p2764 

    Bisotun epigraph is one of the most important traditional monuments of Hakhamaneshi Period with 2500 to 2600 years old which is located 30 km far from Kermanshah. This epigraph has been subjected to various damaging factors, such as surface erosion due to water flow, ground water dissolution,...

  • Propagation of axisymmetric waves in an initially twisted circular compound bimaterial cylinder with a soft inner and a stiff outer constituents. Akbarov, S.; Guliev, M.; Kepceler, T. // Mechanics of Composite Materials;Jan2011, Vol. 46 Issue 6, p627 

    Within the scope of a piecewise homogeneous body model, with the use of the three-dimensional linearized theory of propagation of elastic waves in an initially stressed body, the problem on the propagation of axisymmetric waves in an initially twisted circular compound bimaterial cylinder is...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics