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We present an apertureless THz pulse near field microscopy (THz-NFM) system. Approach curves are obtained for Au films and float-zone Si wafers, and are analyzed by using self-consistent image method (SCIM).
We propose a self-consistent calculation method for apertureless THz near-field microscope (NFM) which is based on an exact image theory. Within the quasi-electrostatic limit, the exact image theory was iteratively applied to calculate interactions between dielectric spheres and substrate effects. The calculated near field was in excellent agreement with results from a commercial finite element method...
We present the biomolecular imaging by using a terahertz pulse apertureless near-field microscope (THz NFM) with a nanometer resolution. THz NFM provides THz spectral imaging as well as topography of the nanostructured sample surface. By scanning the probe over a single biomolecular nanoparticle, the THz images and the scattering spectra were obtained.
We propose a terahertz (THz) confocal microscope. The THz field is modulated by dithering an objective lens, and the signal is detected through a pinhole. The modulated signal is converted to an image using an analytic model based on perturbation analysis. The analytic model can successfully predict the surface profile of a test sample. This confirms that the proposed confocal microscope has a great...
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