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  • Nature Publishing Group  (4)
  • American Institute of Physics (AIP)  (2)
  • Geological Society of America (GSA)
  • Periodicals Archive Online (PAO)
  • 2015-2019
  • 2000-2004
  • 1995-1999  (2)
  • 1970-1974
  • 1960-1964
  • 1950-1954  (4)
  • 1996  (2)
  • 1950  (4)
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  • 2000-2004
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  • 1
    Electronic Resource
    Electronic Resource
    A normal force distance regulation scheme for near-field optical microscopy (1996)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 68 (1996), S. 1607-1609 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A near-field optical microscope (NFOM) has been developed that combines the features of a near-field optical microscope and an atomic force microscope. Improved control over tip-sample separation has led to improved optical imaging and independent surface topography information. The tip oscillation is normal to the sample plane thereby reducing lateral forces—important for nonperturbative imaging of soft samples. Both topographic images and reflection near-field optical images are presented which demonstrate the capability of the system. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.115666
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  • 2
    Electronic Resource
    Electronic Resource
    A near-field optical microscope with normal force distance regulation (1996)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 67 (1996), S. 3891-3897 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Near-field imaging is a means of exceeding the diffraction limit in optical microscopy to yield subwavelength resolution optical images of a sample surface. In order to achieve such high resolution, it is necessary to scan the measurement probe above the surface at a height of only a few nanometers which requires careful control of the separation between tip and sample. In the implementation of the near-field optical microscope (NFOM) reported here, the distance regulation scheme is based on an inverted noncontact atomic force microscope (AFM) in which a cantilever is used as the sample substrate and imaging is performed with a fiber optic tip. In this way, both the benefits of AFM and NFOM are realized simultaneously. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1147289
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  • 3
    Electronic Resource
    Electronic Resource
    Oscillator Strength of the Na 2 1 Σ— 1 Σ Transitions (1950)
    [s.l.] : Nature Publishing Group
    Nature 166 (1950), S. 191-192 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/166191b0
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  • 4
    Electronic Resource
    Electronic Resource
    Masses of Fundamental Particles (1950)
    [s.l.] : Nature Publishing Group
    Nature 165 (1950), S. 1018-1018 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Substituting for M% the present value 1837 '56 m for the mass of the neutral hydrogen atom, it is found that MX is 1839-08 m, in excellent agreement with the experimental neutron mass 1839-05 m. This simple relation between the neutron and hydrogen atom is consistent with Eddington's1 concept of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1651018c0
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  • 5
    Electronic Resource
    Electronic Resource
    Effect of Posterior Pituitary Extract and its Fractions on Renal Electrolyte Excretion (1950)
    [s.l.] : Nature Publishing Group
    Nature 165 (1950), S. 189-189 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Some observations on this subject have been recently published by O. Schaumann3'4, who investigated the action of oxytocin and of vasopressin on the renal excretion of chloride, sodium and potassium ions in rats. We have been engaged in similar experiments. The effect of small doses (3 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/165189a0
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  • 6
    Electronic Resource
    Electronic Resource
    Masses of Fundamental Particles (1950)
    [s.l.] : Nature Publishing Group
    Nature 166 (1950), S. 655-656 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Putting M%(MiMt\ = (137/2)2 (137 = and substituting for M2 the proton mass 1836'56, it is found that M± is 1839-08; this is in excellent agreement with the experimental value of 1839-05 for the neutron mass. The mass values of the TT- and (jt-mesons do not fit unless we put M2(M1~M2) = ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/166655a0
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