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Determination of Contact Potential Difference by the Kelvin Probe (Part I) I. Basic Principles of Measurements

scanning Kelvin probe – scanning electrochemical microscopy system: design, development and applications. Diss ., 1–245. 5. Ostrick, B. (2000). Die Untersuchung der Karbonat – Kohlendioxid – Wechselwirkung im Feuchtefilm der Oberfläche. Diss., 1–131. 6. Kronik, L., and Shapira, Y. (1999). Surface photovoltage phenomena: theory, experiment, and applications Surf. Sci.e Rep. 37, 1–206. 7. Thomson, W. (later Lord Kelvin) (1898). Contact electricity of metals. Philos. Mag. 46, 82–120. 8. Zisman, W.A. (1932). Rev Sci. Instrum. 3 . 367

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Determination of Contact Potential Difference by the Kelvin Probe (Part II) 2. Measurement System by Involving the Composite Bucking Voltage

REFERENCES 1. Vilitis, O., Rutkis, M., Busenbergs, J., and Merkulovs, D. (2016). Determination of contact potential difference by the Kelvin probe (Part I). 1. Basic principles of measurements probe. Latv. J. Phys. Techn. Sci., 2 , 48–57. 2. Palevsky, H., Swank, R.K., and Grenchik, R. (1947). Design of dynamic condenser electrometers. Rev. Sci. Instrum , 18 , 298–314. 3. Mitchinson, J.C., Prongle, R.D., and Farvis, W.E.J. (1971). Surface potential measurement using a rotating dynamic capacitor. J.phys., E 4, 525–529. 4. Petit

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Correlation between surface morphology and potential profile in OFETs with zone-cast TIPS-Pentacene as seen by scanning Kelvin probe microscopy

Abstract

Charge-carrier transport in the channel of bottom gate, top contact organic field effect transistors with anisotropic layers of 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS-Pentacene) obtained by zone casting was investigated using scanning Kelvin probe microscopy combined with atomic force microscopy. The TIPS-Pentacene continuous layers consisted of thin crystals unidirectionally oriented in the channel. Devices with perpendicular and parallel charge flow in the transistor channel were prepared. It was found that irregularities in the surface morphology at the semiconductor layer in the transistor channel are correlated with the local potential profile, and that the channel resistance strongly depends on the orientation of the TIPS-Pentacene crystals.

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Photoisomerization Processes of Azobenzene Compounds in Thin Poymer Films

). Photoisomerization of azobenzenes. In: Photoreactive organic thin films. Academic Press, pp. 3-104. Muzikante, I., Fonavs, E., Stiller, B., Brehmer, L. (2005). Photoinduced phenomena in organised polar organic films. Advances in Colloid and Interface Science, 116 , 133-141. Vilitis, O., Fonavs, E., & Muzikante, I. (2001). A system for measuring surface potential by the Kelvin-Zisman vibrating capacitor probe. Latvian J. Phys. Techn. Sci. , (5), 38-56. Dobulans, R., Cepite, D., Fonavs, E., & Muzikante

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THEORETICAL STUDY OF THE EFFECT OF PROBE SHAPE ON ADHESION FORCE BETWEEN PROBE AND SUBSTRATE IN ATOMIC FORCE MICROSCOPE EXPERIMENT

. Putman, A. J. Constant, G. De, G. Bart, J. Greve. Adhesion Force Imaging in Air and Liquid by Adhesion Mode Atomic Force Microscopy. Applied Physics Letters, 65 (1994), No. 9, 1195-1197. [5] Thomas, R. C., J. E. Houston, R. M. Crooks, T. S. Kim, T. A. Michalske. Probing Adhesion Forces at the Molecular Scale. J. Amer. Chem. Soc., 117 (1995), No. 13, 3830-3834. [6] Thundat, T., X. Y. Zheng, G. Y. Chen, R. J. Warmack. Role of Relative Humidity in Atomic Force Microscopy Imaging. Surface Science Letters, 294 (1993), 939

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The influence of deformation on the corrosion properties of the material

Mechanical Stress on the Properties of Steel Surfaces: Scanning Kelvin Probe and Local Electrochemical Impedance Study. Journal of The Electrochemical Society 2017, 164 (2), C66-C74. 4. Ren, Z. K.; Zang, S.; Pang, X. L.; Gao, K. V. A novel observation of the interaction between the microelastic stress and electrochemical corrosion of law carbon steel in 3,5 wt% NaCl solution. Electrochemica.Acta [Online] 2012, 85, 283-294. http://www.sciencedirect.com/science/article/pii/S0013468612013692 (accessed June 03, 2016).

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PHOTOELECTRICAL PROPERTIES OF INDANDIONE CHROMOPHORE IN SOLID STATE

PHOTOELECTRICAL PROPERTIES OF INDANDIONE CHROMOPHORE IN SOLID STATE

The optically induced switching of electrical properties of indandione type molecules, which consist of acceptor and donor groups, are investigated. Both calculation and experimental results show a reversible highly dipolar photoinduced intramolecular electron transfer in 2-(4'-N, N-dimethylaminobenzyliden)indan-1,3-dione molecule (DMABI). Kelvin's probe technique is applied to investigate the surface potential of a host-guest polymer film with four different DMABI derivatives. The derivatives have been chosen to compare the influence of the geometry, concentration and dipole moment of a molecule in the ground and excited states on the response time and amplitude of photoinduced surface potential. It is shown that the time of fast response (up to several seconds) to irradiation is independent of the concentration of molecules in a polymer film. Dependence of the amplitudes of photoinduced changes in the surface potential on the molecules concentration is observed for DMABI and its three derivatives. The optimal concentration of guest molecules in the polymer matrix is in the range 10-25 wt% (depending on the molecule).

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Polarization curves scanned in a thin layer of electrolyte as the input data for galvanic corrosion simulation

References 1. Palani, S.; et al. Modeling Approach for Galvanic Corrosion Protection of Multimaterial Aircraft Structures, 2011. BEASY Software and Services. http://www.beasy.com/news/pdfs/Aircraft_Structure_Corrosion_DOD_2011.pdf (accessed May 17, 2013) 2. Stratmann. M.; Streckel. H. On the atmospheric corrosion of metals which are covered with thin electrolyte layers I-III. Corrosion Science 1990 , 30, 681-734 3. Frankel, G. S.; et al. Potential control under thin aqueous layers using a Kelvin Probe

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Influencing the anticorrosion efficiency of pigments based on zinc ferrite by conductive polymers

doped with phosphoric acid by scanning Kelvin probe and other electrochemical methods, Journal of Taiwan Institute. Chemical Engeniering 2017 , 70, 427-436. 5. Kalendová A., Kalenda P. Antikorozní nátěrové hmoty ve vícevrstvých systémech, Corrosion and Protection of Materials 1994 , 38 (5), 81-89. 6. Kalendová A., Antoš P. Anticorrosive coatings in multilayer systems, Corrosion and Protection of Materials 1998 , 42, 55-57. 7. Kalendová A. Alkalising and neutralising effects of anticorrosive pigments containing Zn, Mg, Ca, and Sr cations

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Chromofore Poling in Thin Films of Organic Glasses. 1. Overview of Corona Discharge Application

(1898). Philos. Mag., 46 , 82-120 Zisman, W.A. (1932). Rev. Sci. Instr., 3 , 367-370 Vilitis, O., Fonavs, E., & Muzikante, I. (2001). A system for measuring surface potential by the Kelvin-Zisman vibrating capacitor probe. Latv. J. Phys. Techn. Sci. , (5), 38-56. Gross, B., Giacometti, J.A., & Leal Ferreira, G.F. (1981). Corona method for investigation of charge storage and transport in dielectrics. Annual Report of Conf. On Insul. And Diel. Phenomena , 39

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