1923
First patent filed on “Method for sound selection” at the age of 16
1925
Broadband amplifier using HF dual tube systems with a bandwidth of 106 Hz as the foundation of the later development of the fully electronic television
1926
Development of a resistance radio receiver with a triode (together with LOEWE radio), thus making an affordable radio for a wide range of social classes possible.
1928
Founding of the VON ARDENNE Laboratory for Electron Physics in Berlin-Lichterfelde
Inertia-free brightness control of the light-spot of Braun tubes by the introduction of a negative pre-stressed control electrode for the electron beam, called the “Wehnelt Electrode” in honor of his teacher
1930
On 14 December 1930, the first fully electronic television broadcast in the world was produced in the Lichterfelde laboratory using Flying Spot Scanners (FSS), which are still in use today.
1931
The first public film transmission at the Berlin Radio Exhibition using the Flying Spot Scanner (180-lines-technology), regarded by specialists as the birth of completely electronic television using electron beams
1933
Precision electron beam oscillograph for electronic measurement
1934
The electron-optical image converter (X-ray and infrared image converters)
1937
The scanning electron microscope (SEM), which was perfected in the 1960s, is still the most important analysis instrument in biomedical and microbiological research
1938
First usage of the electron beam as a laser tool for production of microstructures
1939
High-resolution magnetic universal electron microscope for bright, dark field and stereo scope; the X-ray projection microscope and electron beam micro-oscillograph
1941
Development of the 200 kV universal electron microscope, the first emission electron microscope for object temperatures of up to 2 500 °C, electron optic shadow image method
1942
1 MeV van de Graaff neutron generator
First fine beam electron diffraction in the electron microscope
1943
Construction of the Cyclotron with 60 t magnet for nuclear-physical research
1944
Increase of the resolution of the universal electron microscope to 12 AE (the highest resolution in the world until 1954)
1945-1955
Magnetic mass separator for industrial isotope enhancement
Duoplasmatron ion source for high ion flow concentration on the basis of strong inhomogeneous magnetic fields – the Duoplasmatron is still used in particle acceleration and as a correction drive mechanism in space technology today.
Precision oscillograph with 2 μm scanning spot
Precision mass spectrograph with double focusing and ion image converter
1955
Establishment of the Manfred von Ardenne Research Institute in Dresden:
From the very beginning, physical-technological development projects with a high practical relevance occupied center stage. New fields of application were continually developed for the electron beam, the importance of which as an energy intensive and highly flexible laser tool for a host of industrial processes Manfred von Ardenne recognized early on:
- Vacuum melting and refinement of reactive and refractory metals
- Cutting and welding
- Thermal and non-thermal microstructuring
- Textured surface coating
- High-rate evaporation of metals and dielectrics
- Radio polymerization of synthetic materials
- Radio sterilization of crop seeds or disposable medical products