Who we are

TEHO is a trade mark of two associated companies, TEHO d.o.o and KMZ Zalar Miran s.p. Both are family businesses, cooperating in the research and development of mechanical assemblies for applications in photonics and measurement techniques, with a particular specialization in nuclear magnetic resonance probeheads. Whereas marketing activities are carried out by TEHO d.o.o, KMZ Zalar Miran s.p. is in charge of research, development, and production. The manufacturing process is supported by the state-of-the-art equipment, e.g. 5-axis high-speed/high-precision CNC machining centers for metals, ceramics, and special polymers, 4-axis metal laser cutter and the latest CAD/CAM, ECAD, and PLM software (vectorcam, Siemens NX and Altium Designer).

The advanced measurement equipment to be developed within this project is primarily suited for applications in research institution laboratories and development departments of companies, active in the design and characterization of physical and physical chemistry properties and behavior of new complex materials, in particular multiferroics. These materials exhibit various coexisting and interdependent physical observables (magnetization, polarization, mechanical deformation, orientational order). Typical representatives of multiferroics are (i) spintronic materials, with coupled magnetic and electric current conduction properties resulting in e.g. giant magnetoresistivity and (ii) magnetoelectrics, where the material can be electrically polarized in the magnetic field and, reversibly, magnetized in the electric field. Nuclear magnetic resonance offers immense opportunities for the in-depth analysis and insight into microscopic and nanoscopic nature of physical properties that govern the macroscopic behavior of multiferroics. Unfortunately, commercially available magnetic resonance probeheads, offered by the”big” manufacturers, are designed primarily for investigations of chemical properties in the liquid state. Probeheads designed for studies of condensed matter, on the other hand, suffer from the lack of expandability and adaptability to requirements of studies on multiferroics like in-situ exposure of the sample to various external fields (electric field, illumination with light, pressure, uniaxial mechanical deformation) and arbitrary sample shapes, e.g. thin films. These facts clearly demonstrate the need for development of nuclear magnetic resonance probe of modular design, capable broad-band automatic tuning in a wide T-range down to liquid He temperatures. According to our knowledge, the “big” international manufacturers of nuclear magnetic resonance equipment do not offer such ‘physicist-oriented’ products at the time being.

The latest achievement of TEHO’s own product development is the autotuning multipurpose nuclear magnetic resonance measurement probe for investigations of physical properties of materials. Advantages of this new device are universality, i.e. adaptability for integration with commercial magnetic resonance spectrometers of various manufacturers, as well as flexibility for investigations of materials of arbitrary shapes and aggregate states.