in developing nanotube based multi-beam X-ray (MBX) tubes
We do not follow, We revolutionize!
Techniques of X-ray sources have remained unchanged. Not anymore.
VEC Imaging is changing the way we look at nanotubes, compared to conventional CNTs. With innovative processes and materials we have addressed the numerous issues existing with todays current CNT standards and have designed an integrated system complete with NT based X-ray tube, associated Control Electronics and High Voltage Power Supply.
We are leading the way from traditional CT Scanners to Portable CT Scanners with Static Gantry.
Nanotube technology with high speed and quality
Our revolutionary (MBX) tube presents unprecedented scanning speed and significantly improved image quality.
It has a wide range of applications from medical imaging to security screening.
The VEC Imaging nanotube uses a nanotube-based, electron field emission emitter (cold cathode) instead of the traditional thermionic emitter (W filament). This new nanotube emitter is a cold emitter that emits electrons at room temperature when driven by an electric field (voltage). It is this nanotube cold emitter technology that finally makes it possible to pack tens or even hundreds of emitters inside a vacuum enclosure without any issue of thermal breakdown.
- Field emission: local electric field strength high enough to extract electrons from NT emitters
- Room temperature operation, 25°C
- Simple emitter structure, 2 conductors (C, G)
- No thermal risks
- No inherent limit on packing density
- High energy efficiency (no heat required)
- Emitter size flexible from micro size to hundred centimeters
- Uniform electron emission
Traditional Gridded Cathode
- Thermionic emission: heat up tungsten filament to release electrons
- High operating temperature, 1800°C
- More complicated emitter structure, 3 conductors (C, F, G)
- Cathode thermal risk: CTE mismatch, evaporation, leakage current, etc.
- Limited packing density for distributed source
- Low energy deficiency (filament heat up required)
- Emitter size limited in a small range
- Non uniform electron emission (double peak emission on filament)
Traditional Gridded Cathode
|Field emission: local electric field strength high enough to extract electrons from NT emitters||Thermionic emission: heat up tungsten filament to release electrons|
|Room temperature operation, 25°C||High operating temperature, 1800°C|
|Simple emitter structure, 2 conductors (C, G)||Complicated emitter structure, 3 conductors (C, F, G)|
|No thermal risks||Cathode thermal risk: CTE mismatch, evaporation, leakage current, etc.|
|No inherent limit on packing density||Limited packing density for distributed source|
|High energy efficiency (no heat required)||Low energy efficiency (filament heat up required)|
|Emitter size flexible from micro size to hundred centimeters||Emitter size limited in a small range|
|Uniform electron emission||Non uniform electron emission (double peak emission on filament)|
More about our nanotube technology
Our latest news
With funding from the Bavarian State Ministry for Economic Affairs, Regional Development and Energy StMWI, VEC Imaging is developing a prototype for a cost effective, compact, lightweight, portable Static CT Scanner for medical applications. This system is based on...
In addition to funding VEC Imaging projects for our Nanotube technology and medical systems, the Bavarian State Ministry for Economic Affairs, Regional Development and Energy StMWI is supporting one of our critical electronic projects, the development and design of a...
With funding support from the Bavarian State Ministry for Economic Affairs, Regional Development and Energy StMWI, VEC Imaging has started a new project for the development of a nanotube based multibeam X-ray tube with associated control electronics, for static EDS...