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1

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Innovative conceptual design : theory and application of parameter analysis (2001)

Kroll, Ehud ; Condoor, Sridhar S. ; Jansson, David G.

Cambridge ; New York : Cambridge University Press

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Schlagwort(e): Conception technique. ; Design, Industrial. ; Design. ; Engineering design.

Seiten: xiv, 232 p.

ISBN: 0-511-01928-9

URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=74355

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Pattern classification / (2001)

Duda, Richard O. ; Hart, Peter E. ; Stork, David G.

New York [u.a.] :Wiley,

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Titel: Pattern classification /

Autor: Duda, Richard O.

Beteiligte Person(en): Hart, Peter E. , Stork, David G.

Ausgabe: 2. ed.

Verlag: New York [u.a.] :Wiley,

Erscheinungsjahr: 2001

Seiten: XX, 654 S.

ISBN: 0-471-05669-3

Materialart: Buch

Sprache: Englisch

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Zuse-Institut Berlin

3

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Computer manual in MATLAB to accompany pattern classification / (2004)

Stork, David G. ; Yom-Tov, Elad

Hoboken, NJ :Wiley,

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Titel: Computer manual in MATLAB to accompany pattern classification /

Autor: Stork, David G.

Beteiligte Person(en): Yom-Tov, Elad

Ausgabe: 2nd ed.

Verlag: Hoboken, NJ :Wiley,

Erscheinungsjahr: 2004

Seiten: IX, 11 - 134 S.

ISBN: 0-471-42977-5

Materialart: Buch

Sprache: Englisch

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Zuse-Institut Berlin

4

Digitale Medien

Self-organization of comblike copolymers with end-functionalized side chains: A cellular-automaton-based simulation (2000)

Shirvanyanz, David G. ; Pavlov, Alexander S. ; Khalatur, Pavel G.

College Park, Md. : American Institute of Physics (AIP)

The Journal of Chemical Physics 112 (2000), S. 11069-11079

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ISSN: 1089-7690

Quelle: AIP Digital Archive

Thema: Physik , Chemie und Pharmazie

Notizen: Using the cellular-automaton-based simulation technique, we study the processes of self-organization in the systems of comblike copolymers with strongly attracting groups located at the ends of side chains. It is found that at a certain critical association energy, dependent both on polymer volume fraction and on the chemical composition of the copolymers, a micellar phase is nucleated. For the combs with large linear grafting density, a weak extension of the macromolecules is observed as attraction between end groups is increased. We find that the micelle formation observed in the sufficiently dense systems is mainly a result of intermolecular association. From the analysis of the static structure factors and snapshot pictures, it is concluded that the system is spatially inhomogeneous on the intermediate length scales related to the average intermicellar distances. Strong attraction stabilizes the aggregates (multiplets) that serve as junction points of a temporary network (micellar gel). We observe the formation of a specific space-filling weblike network in which strongly attracting side-chain ends group into multiplets which are wrapped by neutral polymer sections connecting these multiplets. © 2000 American Institute of Physics.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.481747

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Digitale Medien

Accurate calibration technique for a resonant-mass gravitational wave detector (2000)

Tobar, Michael E. ; Locke, Clayton R. ; Ivanov, Eugene N. ; [weitere]

[S.l.] : American Institute of Physics (AIP)

Review of Scientific Instruments 71 (2000), S. 4282-4285

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ISSN: 1089-7623

Quelle: AIP Digital Archive

Thema: Physik , Elektrotechnik, Elektronik, Nachrichtentechnik

Notizen: The methodology for accurately calibrating the Niobe resonant-mass gravitational wave detector is presented. The transducer is based on a low noise resonant microwave cavity transducer that converts the displacement of the resonating mass to microwave energy. The calibration technique consists of a one off measurement of the microwave frequency versus resonant-mass displacement characteristic. To measure this accurately, known static forces were applied to the resonant mass and the change in the transducer microwave frequency was recorded. With the aid of finite element analysis and accurate measurements of the resonant-mass characteristics, the deflection due to the known force was calculated. The calculated deflections were verified coarsely with measurements from a calibrated linear variable differential transformer. Typically, the detector operates with a 1 mK noise temperature. A best noise temperature of 890 μK between 1300 and 2000 Universal Time Coordinate (UTC) for day 60 in 1997 is reported. The transducer has been upgraded with a new microwave amplifier, which has a measured electronic noise floor 40 dB lower than the previous amplifier, which is only 10 dB above the quantum limit. © 2000 American Institute of Physics.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.1319982

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Digitale Medien

Characterization of nanostructured metal films by picosecond acoustics and interferometry (2001)

O'Hara, K. E. ; Hu, Xiaoyuan ; Cahill, David G.

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 90 (2001), S. 4852-4858

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ISSN: 1089-7550

Quelle: AIP Digital Archive

Thema: Physik

Notizen: Picosecond interferometry is used to study the acoustics waves created by heating Pt films with a subpicosecond laser pulse. Both the period of the initial oscillations in the metal film and the amplitude of the sound wave in the substrate are measured quantitatively. The platinum films are roughened by irradiation with energetic ions. The amplitude of the sound wave is doubled at those irradiation levels where the platinum coverage has been reduced by about one-half. A theory for the amplitude of the launched acoustic wave predicts that the acoustic amplitude is proportional to the mean square film thickness. Thus changes in the morphology of a partially perforated metal film can be observed using a simple, nondestructive optical technique. © 2001 American Institute of Physics.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.1406543

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Digitale Medien

Dewetting and nanopattern formation of thin Pt films on SiO2 induced by ion beam irradiation (2001)

Hu, Xiaoyuan ; Cahill, David G. ; Averback, Robert S.

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 89 (2001), S. 7777-7783

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ISSN: 1089-7550

Quelle: AIP Digital Archive

Thema: Physik

Notizen: Dewetting and nanopattern formation of 3–10 nm Pt thin films upon ion irradiation is studied using scanning electron microscopy (SEM). Lateral feature size and the fraction of exposed surface area are extracted from SEM images and analyzed as functions of ion dose. The dewetting phenomenon has little temperature dependence for 3 nm Pt films irradiated by 800 keV Kr+ at temperatures ranging from 80 to 823 K. At 893 K, the films dewet without irradiation, and no pattern formation is observed even after irradiation. The thickness of the Pt films, in the range 3–10 nm, influences the pattern formation, with the lateral feature size increasing approximately linearly with film thickness. The effect of different ion species and energies on the dewetting process is also investigated using 800 keV Kr+ and Ar+ irradiation and 19.5 keV He+, Ar+, Kr+, and Xe+ irradiation. The lateral feature size and exposed surface fraction scale with energy deposition density (J/cm2) for all conditions except 19.5 keV Xe+ irradiation. © 2001 American Institute of Physics.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.1372623

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8

Digitale Medien

Thermal conductivity of amorphous carbon thin films (2000)

Bullen, Andrew J. ; O'Hara, Keith E. ; Cahill, David G.

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 88 (2000), S. 6317-6320

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ISSN: 1089-7550

Quelle: AIP Digital Archive

Thema: Physik

Notizen: Thermal conductivities Λ of amorphous carbon thin films are measured in the temperatures range 80–400 K using the 3ω method. Sample films range from soft a-C:H prepared by remote-plasma deposition (Λ=0.20 W m−1 K−1 at room temperature) to amorphous diamond with a large fraction of sp3 bonded carbon deposited from a filtered-arc source (Λ=2.2 W m−1 K−1). Effective-medium theory provides a phenomenological description of the variation of conductivity with mass density. The thermal conductivities are in good agreement with the minimum thermal conductivity calculated from the measured atomic density and longitudinal speed of sound. © 2000 American Institute of Physics.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.1314301

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Digitale Medien

The charge of glass and silica surfaces (2001)

Behrens, Sven H. ; Grier, David G.

College Park, Md. : American Institute of Physics (AIP)

The Journal of Chemical Physics 115 (2001), S. 6716-6721

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ISSN: 1089-7690

Quelle: AIP Digital Archive

Thema: Physik , Chemie und Pharmazie

Notizen: We present a method of calculating the electric charge density of glass and silica surfaces in contact with aqueous electrolytes for two cases of practical relevance that are not amenable to standard techniques: surfaces of low specific area at low ionic strength and surfaces interacting strongly with a second anionic surface. © 2001 American Institute of Physics.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.1404988

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Annealing thin colloidal crystals with optical gradient forces (2001)

Korda, Pamela T. ; Grier, David G.

College Park, Md. : American Institute of Physics (AIP)

The Journal of Chemical Physics 114 (2001), S. 7570-7573

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ISSN: 1089-7690

Quelle: AIP Digital Archive

Thema: Physik , Chemie und Pharmazie

Notizen: We describe methods for annealing colloidal crystals using scanned optical tweezers. Tweezer-induced excitations drive a well-localized region of the colloidal lattice out of thermal equilibrium with its supporting fluid. Subsequent plastic and elastic relaxation of defects yields large defect-free domains. © 2001 American Institute of Physics.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.1359741

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