NOTEM (Near-field Optical Transmission Electron Microscope)

The subject of invention is the Near Field Optical Transmission Electron Emission Microscope NOTEM: an analytical imaging instrument dedicated to optical inspections and observations of different objects via  transmissive electromagnetic radiation. However, our unique solution utilizes in the process of  final image creation not photons, as in conventional optical microscopes, but electrons generated in the near-field regime by the original optical image. In consequence, a much higher lateral resolution far below a diffraction limit for photons can be reached.

In its principle of operation, function and applications, the invented microscopy relates to a number of different research fields and imaging of:

1) objects in any physical state, located under vacuum as well as in the gas atmosphere under arbitrary pressure (also under overpressure), including insulators, semiconductors, conductors and superconductors, dielectrics, ferroelectrics, piezoelectrics, paraelectrics, diamagnetics, paramagnetics, ferromagnetics, ferrimagnetics, antiferromagnetics, chemical compounds and substances, minerals, etc.,  organic, inorganic matter, living matter, i.e. any biological material (also in vivo in its natural environment or exposed to an arbitrary gas atmosphere) or fluids,

2) processes, e.g. physical, chemical, physicochemical, electrochemical, temperature dependent, magnetical, electrical, etc. (also in situ and in real time), with secondary electrons generated as a result of conversion of the object penetrating electromagnetic radiation: non-polarized or polarized linearly, circularly/elliptically, e.g.: synchrotron radiation, X-Ray, laser light, UV-light or visible light, etc.

The terms “photon” and “electron” that occur in the nomenclature of invention of the Near-field Optical Transmission Electron Emission Microscope determine its relationship to the two wide classes of imaging techniques simultaneously: optical and electron microscopy.

The subject of invention: Near-field Optical Transmission Electron Emission Microscope refers to the combining in a one common system the two different imaging mechanisms: 1) optical imaging in the near-field regime or close to it, i.e.<<50nm and 2) secondary electron imaging of EEM type microscopy (“cathode lens objective” based Emission Electron Microscopy).


This unification is performed by the application of the unique photon-electron converter that transforms the optical image (formed in the near-field regime) to the correlated photoelectron image.

Thus, the proposed imaging concept enables a conventional optical microscopy of the e.g. living matter under its natural conditions with photons (on the air side), but directly followed (within the near-field range) by the subsequent electron image formation (on the vacuum side) assuring the extremely high lateral resolution due to the near-field regime in optical and far-field regime in electron imaging. The final lateral resolution of ~20nm in the “optical microscopy scheme” is expected, even in the case of a living microorganisms like bacteria and viruses. It allows the realization of the unique “in vivo” experiments on the nanometric scale carried out in the real time with the biological objects in their natural environment- obviously unavailable in the case of conventional electron microscopy.

Our novel imaging technique is protected by the international patent pending, e.g.: the german and US patent publication will presumably succeed in September 2016.

We are interested in a scientific and commercial collaboration, proposals and grants formulation, etc.