We have developed an epoch-making electron source technology using nanowire materials after 18 years of research.
In 2004, our first research on the creation of LaB6 nanowires started at the University of North Carolina.
We developed technologies to applicate nanowires into electron sources and electron guns at National Institute of Materials Science (NIMS) in Japan.
Then, Scientia Concors Inc. inherited the technologies as a venture from NIMS.
A Simple Principle with Nano Materials
Our new LaB₆ nanowire electron source does not need to heat up, and it emits electrons even at room temperature.
This phenomenon is caused by the formation of a very high electric field at the tip of the nanowire with an exceptionally small size (1/100 billion of a conventional LaB₆ thermal electron source).
The high electric field causes quantum tunneling of electrons from inside the tip of the nanowire to the outside vacuum, and electrons are ejected from the tip, forming an extremely bright electron beam that is 10,000 times brighter than conventional LaB₆ thermal electron sources.
Six No.1s in the World
・Brightness of electron beam
（ 2.7×1011 A/m2/sr/V ）
DOI: 10.1038/NNANO.2015.276
・Monochromaticity of electron beam
（ 0.2 eV ）
DOI: 10.1038/s41565-021-00999-w
・Spatial resolution of TEM
（ 90 pm/60kV ）
DOI: 10.1038/s41565-021-00999-w
・Operationg life（ over 5000 hours ）
・Size of CFEG（ 5L ）
・Spatial resolution of desktop SEM
（ 50nm/5kV ）
Public Information
（Research papers, lecture materials, materials published in magazines, etc.）
- Han Zhang, etc. High-endurance micro-engineered LaB6 nanowire electron source for high-resolution electron microscopy. Nature Nanotechnology. 17, 21-26, (2022);
- ナノワイヤで高性能電子源, Nikkan Kogyo Shimbun, 21, November 9th, 2021;
- Han Zhang, etc. New applications for ultra-high brightness LaB6 nanowire cathode, The International Vacuum Nanoelectronics Conference 2018, invited lecture, July (2018);
- Han Zhang, etc. Highly bright and stable LaB6 nanowire electron source, The 65th Japan Society of Applied Physics Spring Meeting, invited lecture, March (2018);
- Han Zhang, etc. Ultrabright and monochromatic nanowire electron sources. MRS Bulletin. 42, 511-517, (2017); (review)
- Han Zhang, etc. An ultrabright and monochromatic electron point source made of a LaB6 nanowire. Nature Nanotechnology. 11, 273-279, (2016);
- Han Zhang, etc. Nanostructured LaB6 field emitter with lowest apical work function. Nano Letters. 10, 3539-3544, (2010);
- Han Zhang, etc. Atomic force microscopy measurement of the Young’s modulus and hardness of single LaB6 nanowires. Applied Physics Letters. 92, 173121, (2008);
- Han Zhang, etc. Field emission of electrons from single LaB6 nanowires, Advanced Materials, 18, 87-91, (2006);
- Han Zhang, etc. Single-crystalline LaB6 nanowires, Journal of the American Chemical Society, 127, 2862-2863, (2005).