Determination of three-dimensional structure in photon scanning tunnelling microscopy
نویسنده
چکیده
We present an analytic solution to the problem of determining three-dimensional object structure, described by the spatial dependence of the susceptibility, from data accessible through photon scanning tunnelling microscopy (PSTM) experiments. An analysis is presented of the scattering of evanescent waves with detection of the scattered field by a probe in the near zone of the scatterer. The results provide tomographic imaging capability in PSTM.
منابع مشابه
Nano-contact microscopy of supracrystals
BACKGROUND Highly ordered three-dimensional colloidal crystals (supracrystals) comprised of 7.4 nm diameter Au nanocrystals (with a 5% size dispersion) have been imaged and analysed using a combination of scanning tunnelling microscopy and dynamic force microscopy. RESULTS By exploring the evolution of both the force and tunnel current with respect to tip-sample separation, we arrive at the s...
متن کاملLocal phase measurements of light in a one-dimensional photonic crystal.
For the first time the local optical phase evolution in and around a small, one-dimensional photonic crystal has been visualized with a heterodyne interferometric photon scanning tunnelling microscope. The measurements show an exponential decay of the optical intensity inside the crystal, which consists of a periodic array of subwavelength air rods fabricated in a conventional ridge waveguide. ...
متن کاملVisible Light Emission from Atomic Scale Patterns Fabricated by the Scanning Tunneling Microscope
متن کامل
Quantum Tunnelling to the Origin and Evolution of Life
Quantum tunnelling is a phenomenon which becomes relevant at the nanoscale and below. It is a paradox from the classical point of view as it enables elementary particles and atoms to permeate an energetic barrier without the need for sufficient energy to overcome it. Tunnelling might seem to be an exotic process only important for special physical effects and applications such as the Tunnel Dio...
متن کاملExciton dynamics of C60-based single-photon emitters explored by Hanbury Brown–Twiss scanning tunnelling microscopy
Exciton creation and annihilation by charges are crucial processes for technologies relying on charge-exciton-photon conversion. Improvement of organic light sources or dye-sensitized solar cells requires methods to address exciton dynamics at the molecular scale. Near-field techniques have been instrumental for this purpose; however, characterizing exciton recombination with molecular resoluti...
متن کامل