for the cold fusion ping list
May I have executive summary please? And why should I read this?
More information about Hydrogen on Graphene in the same conference.
Abstract:
http://ikkem.com/iccf23/orppt/ICCF23-IA-09-Hu.pdf
Video:
http://ikkem.com/iccf23/MP4/1C-IN09.mp4
Hydrogen isotope separation through two-dimensional crystals
Sheng Hu
College of Chemistry and Chemical Engineering, Pen-Tung Sah Institute of Micro-Nano
Science and Technology, Xiamen University, Xiamen, 361005, China
E-mail: sheng.hu@xmu.edu.cn
Graphene and other two-dimensional (2D) crystals have recently been reported to be able to sieve
hydrogen isotopes with both high hydrogen-to-deuterium selectivity and low energy consumption, at
room temperature. This facilitates the potential developments of 2D materials-based isotope
separation techniques.
This talk will focus on the essential mechanisms for proton transport through
2D crystals, e.g. graphene and hBN, with unexpectedly high transport rates [1]. Then, discuss the
origins of the isotope effects, the proton and deuteron separation factor and the performance and
scalability of the prototype devices [2, 3].
Hydrogen isotopes transport with room temperature
quantum sieving properties through atomic scale channels made of van der Waals crystals will be
discussed as well [4].
References
[1] S. Hu et al., Nature 516, 227-230 (2014).
[2] M. Lozada-Hidalgo†, S. Hu† et al., Science 351, 68-70 (2015).
[3] M. Lozada-Hidalgo; S. Zhang; S. Hu et al., Nat Commun 8, 15215 (2017).
[4] S. Hu et al., Nature Nanotechnol. 13, 468-472 (2018).
And here I always thought that Graphene is a zero-gap semiconductor, because its conduction and valence bands meet at the Dirac points. The Dirac points are six locations in momentum space, on the edge of the Brillouin zone, divided into two non-equivalent sets of three points. The two sets are labeled K and K’. The sets give graphene a valley degeneracy of gv = 2. By contrast, for traditional semiconductors the primary point of interest is generally Γ, where momentum is zero. Go figure.