Electric-Field Control of a Single-Atom Polar Bond

Abstract

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Control of the local magnetic states in graphene with voltage and gating

“…The absolute force of 0.24 nN is exerted on the C1 atom at −0.4 V, which drives the C1 atom down to the graphene plane. These forces are calculated in the Born-Oppenheimer approximation from the nonequilibrium electron density [23], and can be compared directly with experiments [44,45]. Our spin-transport calculations thus suggest that the two vacancy spin states, HS and LS, can be manipulated reversibly by a coordination mechanism between an intermediate tip-defect distance and a moderate tip voltage.…”

Fabrication of Nanodevices Through Block Copolymer Self-Assembly

“…Later, the term "nano-technology" was coined by Taniguchi (1974) to describe the precision manufacture of materials with control of their dimensions on the order of a nanometer, and Drexler (1986) employed a related term "nanotechnology" in his book Engines of Creation: The Coming Era of Nanotechnology for depicting molecular nanotechnology. Over the past 60 years, nanotechnology has progressed tremendously and has been widely used in chemistry (Whitesides, 2005), biology (Sarikaya et al, 2003;Kim and Franco, 2020), physics (Omidian et al, 2021), materials science (Hu et al, 2016;Sun et al, 2020), and medicine (Silva, 2004;Sindhwani and Chan, 2021). Undoubtedly, nanofabrication technology plays the most important role in the development of nanotechnology because it can not only achieve the realization of sophisticated nanodevice concepts but also continuously improve the performance of nanodevices .…”

Origami-controlled strain engineering of tunable flat bands and correlated states in folded graphene

“…Briefly, the tip is significantly approached to graphene surface at the position below a step edge and then is straightly moved across the step edge along a predefined route. During this procedure, the greatly enhanced tip-graphene repulsive force can tear and fold graphene sheet partly at the step edge [34,35], leading to the formation of folded graphene nanostructures as schematically illustrated in Fig. 1(a).…”