51
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El-Nahass M, Farid A, Abd El-Rahman K, Ali H. Ac conductivity and dielectric properties of bulk tin phthalocyanine dichloride (SnPcCl2). PHYSICA B: CONDENSED MATTER 2008; 403:2331-2337. [DOI: 10.1016/j.physb.2007.12.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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52
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Highstrete C, Lee M, Vallett AL, Eichfeld SM, Redwing JM, Mayer TS. Disorder dominated microwave conductance spectra of doped silicon nanowire arrays. NANO LETTERS 2008; 8:1557-1561. [PMID: 18444685 DOI: 10.1021/nl072496p] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Conductance spectra of doped silicon nanowire (SiNW) arrays were measured from 0.5 to 50 GHz at temperatures between 4 and 293 K. For arrays consisting of 11 to >10(4) SiNWs, the conductance was found to increase with frequency as f(s), with 0.25 < s < 0.45, consistent with behavior found universally in disordered systems. A possible cause is disorder from Si/SiO x interface states dominating the conductance due to the high surface-to-volume ratio of the nanowires.
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53
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Lewis TJ. The mechanisms of conduction in proteins. CIBA FOUNDATION SYMPOSIUM 2008:65-82. [PMID: 259505 DOI: 10.1002/9780470720493.ch6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Theoretical calculations have already shown that the electronic properties of biopolymers may be described in terms of conduction and valence energy bands in which electrons are delocalized to a significant degree. Because these bands are separated by a large energy gap, it is concluded that electronic conduction in such systems must be by 'holes' in the valence band. The mechanism of this conduction is discussed with special reference to dry proteins where the charge-transfer role of appropriate acceptor molecules and the modulating influence of amino acid residues will encourage localized and delocalized hole production at the valence band edge. It is suggested that there are close similarities, which have shown up in measurements, in the electrical behaviour of proteins and other non-biological semi-crystalline solids. The significance of such long-range conduction and attendant polarization is considered briefly in the light of evidence for the existence of proteins in cell membranes and in the skeleton of the cytoplasm
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54
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Ritz E, Dressel M. Influence of electronic correlations on the frequency-dependent hopping transport in Si:P. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pssc.200777583] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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55
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Gill E, Arshak A, Arshak K, Korostynska O. pH Sensitivity of Novel PANI/PVB/PS3 Composite Films. SENSORS (BASEL, SWITZERLAND) 2007; 7:3329-3346. [PMID: 28903297 PMCID: PMC3841898 DOI: 10.3390/s7123329] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2007] [Accepted: 12/18/2007] [Indexed: 11/20/2022]
Abstract
This paper reports on the results from the investigation into the pH sensitivity ofnovel PANI/PVB/PS3 composite films. The conductimetric sensing mode was chosen as itis one of the most promising alternatives to the mainstream pH-sensing methods and it is theleast investigated due to the popularity of other approaches. The films were deposited usingboth screen-printing and a drop-coating method. It was found that the best response to pHwas obtained from the screen-printed thick films, which demonstrated a change inconductance by as much as three orders of magnitude over the pH range pH2-pH11. Thedevices exhibited a stable response over 96 hours of operation. Several films were immersedin buffer solutions of different pH values for 96 hours and these were then investigated usingXPS. The resulting N 1s spectra for the various films confirmed that the change inconductance was due to deprotonation of the PANI polymer backbone. SEM andProfilometry were also undertaken and showed that no considerable changes in themorphology of the films took place and that the films did not swell or contract due toexposure to test solutions.
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Affiliation(s)
- Edric Gill
- Dept. of Physics, University of Limerick, Limerick, Ireland
| | - Arousian Arshak
- Dept. of Physics, University of Limerick, Limerick, Ireland.
| | - Khalil Arshak
- Dept. of Computer and Electronic Engineering, University of Limerick, Limerick, Ireland
| | - Olga Korostynska
- Dept. of Computer and Electronic Engineering, University of Limerick, Limerick, Ireland
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56
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Santos S, Caraballo D. Effect of the separation of Coulomb centers on the activation energy in electronic hopping transport: A reinterpretation in poly-N-vinylcarbazole. POLYM ENG SCI 2007. [DOI: 10.1002/pen.20666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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58
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Zav’yalov SA, Schoonman J, Pivkina AN, Gainutdinov RV. Structure and properties of thin-film metal-poly(p-xylylene) hybrid nanocomposites. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2007. [DOI: 10.1134/s1990793107020091] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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59
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Weiss GH, Rubin RJ. Random Walks: Theory and Selected Applications. ADVANCES IN CHEMICAL PHYSICS 2007. [DOI: 10.1002/9780470142769.ch5] [Citation(s) in RCA: 277] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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60
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Gun'ko VM, Zarko VI, Goncharuk EV, Andriyko LS, Turov VV, Nychiporuk YM, Leboda R, Skubiszewska-Zieba J, Gabchak AL, Osovskii VD, Ptushinskii YG, Yurchenko GR, Mishchuk OA, Gorbik PP, Pissis P, Blitz JP. TSDC spectroscopy of relaxational and interfacial phenomena. Adv Colloid Interface Sci 2007; 131:1-89. [PMID: 17188637 DOI: 10.1016/j.cis.2006.11.001] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2006] [Revised: 11/03/2006] [Accepted: 11/03/2006] [Indexed: 10/23/2022]
Abstract
Applications of thermally stimulated depolarisation current (TSDC) technique to a variety of systems with different dispersion phases such as disperse and porous metal oxides, polymers, liquid crystals, amorphous and crystalline solids, composites, solid solutions, biomacromolecules, cells, tissues, etc. in gaseous or liquid dispersion media are analysed. The effects of dipolar, direct current (dc) and space charge relaxations are linked to the temperature dependent mobility of molecules, their fragments, protons, anions, and electrons and depend on thermal treatment, temperature and field intensity of polarisation, heating rate on depolarisation or cooling rate on polarisation. Features of the relaxation mechanisms are affected not only by the mentioned factors but also by morphological, structural and chemical characteristics of materials. The interfacial phenomena, especially the role of interfacial water, received significant attention on analysis of the TSDC data. Comparison of the data of TSDC and dielectric relaxation spectroscopy (DRS), differential scanning calorimetry (DSC), 1H NMR spectroscopy with layer-by-layer freezing-out of bulk and interfacial water, adsorption/desorption of nitrogen, water and dissolved organics demonstrates high sensitivity and information content of the TSDC technique, allowing a deeper understanding of interfacial phenomena.
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Affiliation(s)
- V M Gun'ko
- Institute of Surface Chemistry, Kiev, Ukraine.
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61
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Douillard JM, Maurin G, Henn F, Devautour-Vinot S, Giuntini JC. Use of dielectric relaxation for measurements of surface energy variations during adsorption of water on mordenite. J Colloid Interface Sci 2007; 306:440-8. [PMID: 17126849 DOI: 10.1016/j.jcis.2006.09.067] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2006] [Revised: 09/22/2006] [Accepted: 09/22/2006] [Indexed: 10/23/2022]
Abstract
This paper tries to assess simply and quantitatively the link between classical adsorption theories and dielectric spectroscopy, in order to demonstrate that dielectric spectroscopy can be used as a tool of determination of surface energy variations due to movements of charge carriers at the surface of solids. A simple theory is developed to analyze hops of cations at the surface of mordenite, which are detected by complex impedance spectroscopy during adsorption of water. An energy of extraction of the cation can be determined from measurements and its dependence on the quantity of water molecules adsorbed is shown and qualitatively and quantitatively explained, using relationships developed in order to interpret adsorption phenomena generally. The agreement with other determinations of the adsorption energies and solid surface energy is correct.
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Affiliation(s)
- J M Douillard
- LAMMI, UMR CNRS 5072, CC 015, Université Montpellier 2, Sciences et Techniques, 34095 Montpellier Cedex 05, France.
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62
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Odabaş Z, Altındal A, Özkaya AR, Bulut M, Salih B, Bekaroğlu Ö. Synthesis, characterization, and electrochemical, spectroelectrochemical and electrical measurements of novel ball-type four 1,1′-methylenedinaphthalen-2-ol bridged metal-free, zinc(II) and cobalt(II), and metal-free clamshell phthalocyanines. Polyhedron 2007. [DOI: 10.1016/j.poly.2006.08.039] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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63
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Affiliation(s)
- S. R. Elliott
- a Cavendish Laboratory , Madingley Road, Cambridge , England
- b R.S.R.E. , St Andrews Road, Great Malvern, Worcestershire , England
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64
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Long AR, Balkan N, Hogg WR, Ferrier RP. A.c. loss in sputtered hydrogenated amorphous germanium measurements at around liquid-nitrogen temperatures. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/13642818208246415] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- A. R. Long
- a Department of Natural Philosophy , University of Glasgow , Glasgow , G12 8QQ , Scotland
| | - N. Balkan
- b Department of Physics , Bogazici University , Bebek-Istanbul , Turkey
| | - W. R. Hogg
- a Department of Natural Philosophy , University of Glasgow , Glasgow , G12 8QQ , Scotland
| | - R. P. Ferrier
- a Department of Natural Philosophy , University of Glasgow , Glasgow , G12 8QQ , Scotland
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65
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McInnes JA, Butcher PN, Clark JD. Numerical calculations of a.c. hopping conductivity. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/13642818008245365] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- J. A. McInnes
- a University of Warwick , Coventry , CV4 7AL , England
| | - P. N. Butcher
- a University of Warwick , Coventry , CV4 7AL , England
| | - J. D. Clark
- a University of Warwick , Coventry , CV4 7AL , England
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66
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Movaghar B, Pohlmann B, Schirmacher W. Theory of electronic hopping transport in disordered materials. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/13642818008245369] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- B. Movaghar
- a Fachbereich Physik der Universität Marburg , Renthof 5, D 3550 , Marburg , F.R. Germany
| | - B. Pohlmann
- a Fachbereich Physik der Universität Marburg , Renthof 5, D 3550 , Marburg , F.R. Germany
| | - W. Schirmacher
- a Fachbereich Physik der Universität Marburg , Renthof 5, D 3550 , Marburg , F.R. Germany
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67
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Shimakawa K. On the temperature dependence of a.c. conduction in chalcogenide glasses. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/13642818208246429] [Citation(s) in RCA: 147] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- K. Shimakawa
- a Department of Physics , University of Leicester , Leicester , England
- b Department of Electronics , Faculty of Engineering, Gifu University , 1–1 Yanagido, Gifu , 501–11 , Japan
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68
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Friedman L, Pollak M. Hall mobility due to hopping-type conduction in disordered systems. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/13642817808245674] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- L. Friedman
- a Department of Theoretical Physics , University of St. Andrews , St. Andrews KY16 9SS, Fife , Scotland
| | - M. Pollak
- b Department of Physics , University of California , Riverside , California , 92502 , U.S.A
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69
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Affiliation(s)
- F. W. Schmidlin
- a Xerox Webster Research Center , Webster , New York , 14580 , U.S.A
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70
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Mansingh A, Sinha AK, Dheer PN, Sayer M. Low-temperature a.c. conductivity of vanadium dioxide crystals. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/13642818408238883] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Abhai Mansingh
- a Department of Physics and Astrophysics , University of Delhi , Delhi , 110007 , India
| | - A. K. Sinha
- a Department of Physics and Astrophysics , University of Delhi , Delhi , 110007 , India
| | - P. N. Dheer
- a Department of Physics and Astrophysics , University of Delhi , Delhi , 110007 , India
| | - M. Sayer
- a Department of Physics and Astrophysics , University of Delhi , Delhi , 110007 , India
- b Department of Physics , Queen's University , Kingston , K7L 3N6 , Canada
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71
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Affiliation(s)
- P. Belougne
- a Laboratoire de Chimie-Physique , Université des Sciences et Techniques du Languedoc , Place E. Bataillon, 34060 , Montpellier , France
| | - J. C. Giuntini
- a Laboratoire de Chimie-Physique , Université des Sciences et Techniques du Languedoc , Place E. Bataillon, 34060 , Montpellier , France
| | - J. V. Zanchetta
- a Laboratoire de Chimie-Physique , Université des Sciences et Techniques du Languedoc , Place E. Bataillon, 34060 , Montpellier , France
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72
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Summerfield S. Universal low-frequency behaviour in the a.c. hopping conductivity of disordered systems. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/13642818508243162] [Citation(s) in RCA: 195] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- S. Summerfield
- a Department of Physics , University of Warwick , Coventry , CV4 7AL , England
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73
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Affiliation(s)
- G. A. Thomas
- a AT&T Bell Laboratories , Murray Hill , New Jersey , 07974 , U.S.A
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74
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Chakraborty S, Sadhukhan M, Modak DK, Som KK, Maiti HS, Chaudhuri BK. Study of the a.c. conductivity of BaTiO3-doped V2O5-Bi2O3 glasses using Long's overlapping large-polaron tunnelling model. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01418639508241900] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- S. Chakraborty
- a Solid State Physics Department , Indian Association for the Cultivation of Science , Calcutta , 700 032 , India
| | - M. Sadhukhan
- a Solid State Physics Department , Indian Association for the Cultivation of Science , Calcutta , 700 032 , India
| | - D. K. Modak
- a Solid State Physics Department , Indian Association for the Cultivation of Science , Calcutta , 700 032 , India
| | - K. K. Som
- b Department of Physics , Krishnagar Government College , West Bengal , India
| | - H. S. Maiti
- c Central Glass and Ceramic Research Institute , Calcutta , 700 0-32 , India
| | - B. K. Chaudhuri
- a Solid State Physics Department , Indian Association for the Cultivation of Science , Calcutta , 700 032 , India
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75
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Zav’yalov SA, Kupriyanov LY, Pivkina AN, Shounman J. The microstructure of and charge transfer in thin films based on metal-polymer nanocomposites. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2006. [DOI: 10.1134/s0036024406090184] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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76
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Affiliation(s)
- P. N. Butcher
- a University of Warwick , Coventry , CV4 7AL , England
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77
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Mehra RM, Kumar R, Mathur PC, Shimakawa K. A.c. conduction in the amorphous Ge—Sb—Se system. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/13642818808208471] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- R. M. Mehra
- a Department of Physics and Astrophysics , University of Delhi , Delhi- , 110 007 , India
| | - Rajesh Kumar
- a Department of Physics and Astrophysics , University of Delhi , Delhi- , 110 007 , India
| | - P. C. Mathur
- a Department of Physics and Astrophysics , University of Delhi , Delhi- , 110 007 , India
| | - K. Shimakawa
- a Department of Physics and Astrophysics , University of Delhi , Delhi- , 110 007 , India
- b Department of Electronics , Gifu University , Gifu , 501-11 , Japan
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78
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Butcher PN, Ries B. Application of the rate-equation formulation of a.c. hopping conductivity to amorphous semiconductors and impurity bands. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01418638108222376] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- P. N. Butcher
- a Department of Physics , University of Warwick , Coventry , CV4 7AL , England
| | - B. Ries
- a Department of Physics , University of Warwick , Coventry , CV4 7AL , England
- b Fachbereich Physik, Philipps Universität Marburg , 3550 , Marburg , F.R. , Germany
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79
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Elliott SR. The mechanism for a.c. conduction in chalcogenide semiconductors: Electronic or atomic? ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01418637908226775] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- S. R. Elliott
- a Cavendish Laboratory , Madingley Road , Cambridge , England
- b Department of Physical Chemistry , Lensfield Road, Cambridge , England
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80
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Affiliation(s)
- N. F. Mott
- a Cavendish Laboratory , Madingley Road , Cambridge , CB3 0HE , England
| | - J. H. Davies
- a Cavendish Laboratory , Madingley Road , Cambridge , CB3 0HE , England
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81
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Castner TG. The dielectric anomaly as the insulator-metal transition is approached from the insulating side. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01418638008222334] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- T. G. Castner
- a University of Rochester , Rochester , New York , 14627 , U.S.A
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82
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Affiliation(s)
- P. N. Butcher
- a University of Warwick , Coventry , CV4 7AL , England
| | - A. A. Kumar
- a University of Warwick , Coventry , CV4 7AL , England
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83
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Efros AL. On the theory of a.c. conduction in amorphous semiconductors and chalcogenide glasses. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01418638108222349] [Citation(s) in RCA: 106] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- A. L. Efros
- a A. F. Ioffe Physico-Technical Institute , Leningrad , U.S.S.R
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84
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Hunt A. The a.c. conductivity of variable range hopping systems such as amorphous semiconductors. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/13642819108217882] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- A. Hunt
- a Physics Department , University of California , Irvine , California , 92717 , USA
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85
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Butcher PN. Macroscopic theory of carrier pulse propagation in amorphous semiconductors. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01418637808226462] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- P. N. Butcher
- a University of Warwick , Coventry , CV4 7AL , England
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86
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Singh R, Narula AK, Tandon RP, Mansingh A, Chandra S. Polaronic hopping conduction in poly(N-methyl pyrrole-pyrrole) copolymer. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/13642819708202328] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Ramadhar Singh
- a National Physical Laboratory , Dr K.S. Krishnan Road, New Delhi , 110 012 , India
| | - Amarjeet K. Narula
- a National Physical Laboratory , Dr K.S. Krishnan Road, New Delhi , 110 012 , India
| | - R. P. Tandon
- a National Physical Laboratory , Dr K.S. Krishnan Road, New Delhi , 110 012 , India
| | - A. Mansingh
- b Department of Physics and Astrophysics , University of Delhi , Delhi , 110 007 , India
| | - Subhas Chandra
- a National Physical Laboratory , Dr K.S. Krishnan Road, New Delhi , 110 012 , India
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87
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Singh R, Kumar J, Singh RK, Kaur A, Sinha R, Gupta N. Low frequency ac conduction and dielectric relaxation behavior of solution grown and uniaxially stretched poly(vinylidene fluoride) films. POLYMER 2006. [DOI: 10.1016/j.polymer.2006.06.023] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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88
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Chapter 6 Electron Transport. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/s1572-0934(06)02006-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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89
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Bisquert J, Halpern V, Henn F. Simple model for ac ionic conduction in solids. J Chem Phys 2005; 122:151101. [PMID: 15945615 DOI: 10.1063/1.1896359] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present a model for the ac conduction in ionically conducting solids that takes into account, in a simple way, the interaction between carriers. The Coulomb force forms an "ionic atmosphere" that exerts a restoring force on a central ion, whose motion corresponds to an overdamped oscillator. We consider the effect of the relaxation of the ionic atmosphere by introducing an additional equation for the displacement of the potential toward the particle position. The general behavior of the ac conductivity can be understood in terms of two types of motions: motion of the bound ion at high frequencies determined by microscopic friction, and a much slower motion coupled to the surrounding carriers relaxation at low frequencies.
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Affiliation(s)
- J Bisquert
- Departament de Ciències Experimentals, Universitat Jaume I, 12071 Castelló, Spain.
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90
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Dakhel A. Optical and dielectric properties of gadolinium–indium oxide films prepared on Si (1 0 0) substrate. Chem Phys Lett 2004. [DOI: 10.1016/j.cplett.2004.06.094] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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91
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92
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93
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Lyanda-Geller YB, Aleiner IL, Altshuler BL. Coulomb "Blockade" of nuclear spin relaxation in quantum dots. PHYSICAL REVIEW LETTERS 2002; 89:107602. [PMID: 12225227 DOI: 10.1103/physrevlett.89.107602] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2001] [Indexed: 05/23/2023]
Abstract
We study the mechanism of nuclear spin relaxation in quantum dots due to the electron exchange with the 2D gas. We show that the nuclear spin relaxation rate 1/T(1) is dramatically affected by the Coulomb blockade (CB) and can be controlled by gate voltage. In the case of strong spin-orbit (SO) coupling the relaxation rate is maximal in the CB valleys, whereas for the weak SO coupling the maximum of 1/T(1) is near the CB peaks.
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Affiliation(s)
- Y B Lyanda-Geller
- Naval Research Laboratory, Washington DC 20375 and Beckman Institute and Department of Physics, University of Illinois, Urbana 61801, USA
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94
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Roling B. Hopping dynamics of ions and polarons in disordered materials: On the potential of nonlinear conductivity spectroscopy. J Chem Phys 2002. [DOI: 10.1063/1.1484381] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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96
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Jonscher AK. The role of contacts in frequency-dependent conduction in disordered solids. ACTA ACUST UNITED AC 2002. [DOI: 10.1088/0022-3719/6/11/006] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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97
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Krause S, Bohon K. Electromechanical Response of Electrorheological Fluids and Poly(dimethylsiloxane) Networks. Macromolecules 2001. [DOI: 10.1021/ma0108158] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sonja Krause
- Department of Chemistry, Rensselaer Polytechnic Institute, Troy, New York 12180
| | - Katherine Bohon
- Department of Chemistry, Rensselaer Polytechnic Institute, Troy, New York 12180
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98
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Roling B, Martiny C, Murugavel S. Ionic conduction in glass: new information on the interrelation between the "Jonscher behavior" and the "nearly constant-loss behavior" from broadband conductivity spectra. PHYSICAL REVIEW LETTERS 2001; 87:085901. [PMID: 11497961 DOI: 10.1103/physrevlett.87.085901] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2001] [Revised: 06/18/2001] [Indexed: 05/23/2023]
Abstract
We analyze broadband ac conductivity spectra of various ion conducting glasses with regard to the composition dependence of the "Jonscher behavior" and of the "nearly constant-loss behavior." In the temperature range of our experiments (173 K< or =T< or =573 K), both types of behavior are closely related, indicating that both arise from ion hopping. However, the "nearly constant-loss behavior" observed at temperatures below 100 K seems to be caused by other dynamic processes.
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Affiliation(s)
- B Roling
- Institut für Physikalische Chemie and Sonderforschungsbereich 458, Westfälische Wilhelms-Universität Münster, Schlossplatz 4/7, 48149 Münster, Germany
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99
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Martens HC, Hilt O, Brom HB, Blom PW, Huiberts JN. Voltage-modulated millimeter-wave spectroscopy on a polymer diode: mesoscopic charge transport in conjugated polymers. PHYSICAL REVIEW LETTERS 2001; 87:086601. [PMID: 11497968 DOI: 10.1103/physrevlett.87.086601] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2000] [Indexed: 05/23/2023]
Abstract
We present a new technique to determine the carrier mobility mu in semiconducting, undoped, conjugated polymers in the millimeter-wave frequency range, 10-500 GHz. This method probes charge conduction on mesoscopic length scales, a regime inaccessible to other transport experiments. The experiment is based on the detection of millimeter-wave absorption of field-induced charge in polymer diodes, and is applied to poly( p-phenylene vinylene). We demonstrate that locally mu can be as high as 10(-4) m(2)/V s, and deduce the typical hopping parameters in the mesoscopic high- mu regions in the material.
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Affiliation(s)
- H C Martens
- Kamerlingh Onnes Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands
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100
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