We studied the electrical and optical properties, density, and crystalline structure of Au nanostructures prepared by direct current sputtering on glass. We measured temperature dependence of sheet resistance and current-voltage characteristics and also performed scanning electron microscopy [SEM] analysis of gold nanolayers. It was shown that within the wide range of temperatures, gold nanolayers (<10 nm) exhibit both metal and semiconducting-like type of conductivity. UV/Vis analysis proved the semiconducting characteristic of intrinsic Au clusters. SEM analysis showed the initiatory stadium of gold layer formation to be running over isolated islands. Gold density calculated from the weight and effective thickness of the layers is an increasing function of the layer thickness up to approximately 100 nm. In thin layers deposited on solid surface, a lattice expansion is observed, which is manifested in the increase of the lattice parameter and the decrease of metal density. With increasing layer thickness, the lattice parameter and the density approach the bulk values.

Department of Solid State Engineering Institute of Chemical Technology Technicka 5 166 28 Prague Czech Republic

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Biswas A, Karulkar PC, Eilers H, Norton MG, Skorski D, Davitt C, Greve H, Schürmann U, Zaporojtchenko V, Faupel F. Low cost, tailored polymer-metal nanocomposites for advanced electronic applications. Vac Technol Coat. 2006;7:57.

Hynninen A, Thijssen JHJ, Vermolen ECM, Dijkstra M, Blaaderen AV. Self-assembly route for photonic crystals with a bandgap in the visible region. Nat Mater. 2007;5:605. PubMed

Rao CNR, Kulkarni GU, Thomas PJ, Edwards PP. Size-dependent chemistry: Properties of nanocrystals. Chem Eur J. 2002;8:1. doi: 10.1002/1521-3765(20020104)8:1<28::AID-CHEM28>3.0.CO;2-B. PubMed DOI

Roduner E. Size-dependent chemistry: Properties of nanocrystals. Chem Soc Rev. 2006;35:583. doi: 10.1039/b502142c. PubMed DOI

Fisher W, Geiger H, Rudolf P, Wissmann P. Structure investigation on single-crystal gold-films. J Appl Phys. 1977;13:245. doi: 10.1007/BF00882888. DOI

Haupl K, Lang M, Wissmann P. X-ray-difraction investigations on ultra-thin gold-films. Surf Interf Anal. 1986;9:27. doi: 10.1002/sia.740090106. DOI

Wang N, Rokhlin SI, Farson DF. Nonhomogeneous surface premelting of Au nanoparticles. Nanotechnology. 2008;19:575. PubMed

Chopra K. Thin Film Phenomena. New York: Wiley; 1969.

Sun CQ. Size dependence of nanostructures: Impact of bond order deficiency. Prog Solid State Chem. 2007;35:1. doi: 10.1016/j.progsolidstchem.2006.03.001. DOI

Seino S, Kinoshita T, Otome Y, Maki T, Nakagawa T, Okitsu K, Mizukoshi Y, Nakayama T, Sekino T, Niihara K, Yamamoto TA. Gamma-ray synthesis of composite nanoparticles of noble metals and magnetic iron oxides. Scripta Mater. 2004;51:467. doi: 10.1016/j.scriptamat.2004.06.003. DOI

Nakao S, Ando T, Shikida M, Sato K. Mechanical properties of a micron-sized SCS film in a high-temperature environment. J Micromech Microeng. 2006;16:715. doi: 10.1088/0960-1317/16/4/007. DOI

Liu F, Rugheimer P, Mateeva E, Savage DE, Lagally MG. Nanomechanics - Response of a strained semiconductor structure. Nature. 2002;416:498. doi: 10.1038/416498a. PubMed DOI

Wenzler LA, Moyes GL, Beebe TP. Improvements to atomic force microscopy cantilevers for increased stability. Rev Sci Instrum. 1996;67:4191. doi: 10.1063/1.1147568. DOI

Bonderover E, Wagner S. A woven inverter circuit for e-textile applications. IEEE Elektron Dev Lett. 2004;25:295. doi: 10.1109/LED.2004.826537. DOI

Mendelsohn J, Yang SY, Hiller J, Hochbaum A, Rubner MF. Rational design of cytophilic and cytophobic polyelectrolyte multilayer thin films. Biomacromolecules. 2003;4:96. doi: 10.1021/bm0256101. PubMed DOI

Nazabal V, Fargin E, Labrugere C, Flem G. Second harmonic generation optimization in thermally poled borophosphate glasses and characterization by XANES and XPS. J Non-Cryst Solids. 2000;270:223. doi: 10.1016/S0022-3093(00)00062-4. DOI

Lal S, Grady NK, Kundu J, Levin CS, Lassiter JB, Halas NJ. Tailoring plasmonic substrates for surface enhanced spectroscopies. Chem Soc Rev. 2008;37:898. doi: 10.1039/b705969h. PubMed DOI

Su H, Li Y, Li XY, Wong KS. Optical and electrical properties of Au nanoparticles in two-dimensional networks: an effective cluster model. Opt Express. 2009;17:22223. doi: 10.1364/OE.17.022223. PubMed DOI

Jiang Q, Liang LH, Zhao DS. Lattice contraction and surface stress of fcc nanocrystals. J Phys Chem B. 2001;105:6275. doi: 10.1021/jp010995n. DOI

Palosz B, Grzanka E, Gierlotka S, Stel'makh S, Pielaszek R, Lojkowski W, Bismayer U, Neuefeind J, Weber HP, Palosz W. Application of X-ray powder diffraction to nano-materials - Determination of the atomic structure of nanocrystals with relaxed and strained surfaces. Phase Transit. 2003;76:171. doi: 10.1080/0141159031000076129. DOI

Qi WH, Wang MP. Size and shape dependent lattice parameters of metallic nanoparticles. J Nanoparticle Res. 2005;7:51. doi: 10.1007/s11051-004-7771-9. DOI

Qin W, Chen ZH, Huang PY, Zhuang YH. Crystal lattice expansion of nanocrystalline materials. J Alloy Compd. 1999;292:230. doi: 10.1016/S0925-8388(99)00291-1. DOI

Zhu YF, Zheng WT, Jiang Q. Modeling lattice expansion and cohesive energy of nanostructured materials. Appl Phys Lett. 2009;95:083110. doi: 10.1063/1.3212858. DOI

Tauc J. Amorphous and Liquid Semiconductors. Heidelberg: Springer; 1974.

Švorčík V, Slepička P, Švorčíková J, Špírková M, Zehentner J, Hnatowicz V. Characterization of evaporated and sputtered thin Au layers on poly(ethylene terephtalate) J Appl Polym Sci. 2006;99:1698.

Švorčík V, Hubáček T, Slepička P, Siegel J, Kolská Z, Bláhová O, Macková A, Hnatowicz V. Characterization of carbon nanolayers flash evaporated on PET and PTFE. Carbon. 2009;47:1770.

Kaune G, Ruderer MA, Metwalli E, Wang W, Couet S, Schlage K, Röhlsberger R, Roth SV, Müller-Buschbaum P. In Situ GISAXS Study of Gold Film Growth on Conducting Polymer Films. Appl Mater Interf. 2009;1:353. doi: 10.1021/am8000727. PubMed DOI

Švorčík V, Zehentner J, Rybka V, Slepička P, Hnatowicz V. Characterization of thin gold layers on polyethyleneterephthalate: transition from discontinuous to continuous, homogenous layer. Appl Phys A. 2002;75:541.

Hodgman CD. Handbook of Chemistry and Physics. Cleveland: Chemical Rubber; 1975.

Slepička P, Kolská Z, Náhlík J, Hnatowicz V, Švorčík V. Properties of Au nanolayers on polyethyleneterephthalate and polytetrafluoroethylene. Surf Interface Anal. 2009;41:741.

Brust M, Bethell D, Kiely ChJ, Schiffrin DJ. Self-assembled gold nanoparticle thin films with nonmetallic optical and electronic properties. Langmuir. 1998;14:5425. doi: 10.1021/la980557g. DOI

Hunderi O. Optics of rough surfaces, discontinuous films and heterogeneous materials. Surf Sci. 1980;96:1. doi: 10.1016/0039-6028(80)90291-5. DOI

Kalyuzhny G, Vaskevich A, Schneeweiss M, Rubinstein I. Transmission surface-plasmon resonance (T-SPR) measurements for monitoring adsorption on ultrathin gold island films. Chem Eur J. 2002;8:3850. doi: 10.1002/1521-3765(20020902)8:17<3849::AID-CHEM3849>3.0.CO;2-1. PubMed DOI

Mor ID, Barkay Z, Granit NF, Vaskevich A, Rubinstein I. Ultrathin gold island films on silanized glass. Morphology and optical properties. Chem Mater. 2004;16:3476. doi: 10.1021/cm049605a. DOI

Doremus RH. Optical properties of thin metallic films in island form. J Appl Phys. 1966;37:2775. doi: 10.1063/1.1782121. DOI

Mie G. Articles on the optical characteristics of turbid tubes, especially colloidal metal solutions. Ann Phys. 1908;330:377. doi: 10.1002/andp.19083300302. DOI

Fox M. Optical Properties of Solids. NewYork: Oxford University Press; 2003.

Hazra D, Datta S, Mondal M, Ghatak J, Satyam PV, Gupta AK. Thickness dependent lattice expansion in nanogranular Nb thin films. J Appl Phys. 2008;103:103535. doi: 10.1063/1.2924332. DOI

Qin W, Nagase T, Umakoshi Y, Szpunar JA. Lattice distortion and its effects on physical properties of nanostructured materials. J Phys Condens Mater. 2007;19:236217. doi: 10.1088/0953-8984/19/23/236217. DOI

Bellamy DJ, Clarke PH. Application of second law of thermodinamics and Le Chateliers principle to developing ecosystem. Nature. 1968;218:1180. doi: 10.1038/2181180a0. DOI

Kolská Z, Říha J, Hnatowicz V, Švorčík V. Lattice parameter and expected density of Au nano-structures sputtered on glass. Mater Lett. 2010;64:1160.

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