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  • 1
    Electronic Resource
    Electronic Resource
    A pulser for medium-frequency modulated direct-current reactive sputter deposition of insulators (2000)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 71 (2000), S. 2560-2562 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We present the circuit design of a unit for medium-frequency modulated direct-current (dc) reactive sputter deposition of electrical insulators. The unit is connected in series between a commercial dc sputtering power supply and a sputtering cathode (target). It modulates the voltage applied to the sputtering cathode in a pulsed, asymmetric bipolar fashion. The pulsing effectively eliminates the problem of arcing at the target surface. The simple circuit is a low-cost, flexible alternative to commercially available units. To demonstrate its utility, we deposited a film of 5 SiO2/TiO2 bilayers, forming a highly reflective dielectric optical mirror with a stop band centered near a wavelength in air of 600 nm. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1150648
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    A top loading, very low-temperature, X-band, microwave spectrometer (1990)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 61 (1990), S. 1436-1441 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We describe modifications to an Oxford Model TLE 400 dilution refrigerator permitting measurements of microwave response at X-band. Coupling to the cavity is accomplished with a Gordon coupler involving a 1/4-in. access hole and a 1/4-in. dielectric rod running coaxial with the circular waveguide which feeds the microwave cavity. The rod extends through a vacuum load lock and may be removed. A stainless-steel sample insertion rod may then be inserted allowing top loading of specimens directly into the cavity; the samples themselves are attached to a copper fixture, involving a combination of left- and right-hand threads which may be reversibly screwed into and out of the bottom of the cavity. Preliminary surface impedance studies of s-wave superconductors (Sn, Zn, and In) and the heavy fermion UPt3 superconductor have been performed with this spectrometer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1141200
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    A compact, bipolar, constant–current-voltage source for superconducting junction characterization (1989)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 60 (1989), S. 3822-3824 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A versatile, compact, constant current-voltage, bipolar power source for quasi-static or derivative measurements of the characteristics of superconducting junctions has been developed. The circuitry is based on a negative feedback strategy that is effective in maintaining constant current-voltage behavior at the junction itself and all lead resistances are included in the feedback loop. Constant currents and voltages can be delivered of up to ±0.5 A and ±0.75 V, respectively. Both fast and slow sweeps, as well as a single sweep mode, are available in variable ranges. The single sweep feature is used to avoid heating effects in low resistance junctions which are not in good thermal contact with a thermal reservoir (e.g., liquid 4 He).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1140449
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Growth of metal/organism multilayer films from ligand-stabilized silver nanoparticles (2000)
    Springer
    Journal of materials science 19 (2000), S. 963-964 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006716205109
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    Paper (German National Licenses)
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