Published in Applied Physics Express
Due to the strong concentration quenching effect, the development of non-doped devices with excellent performance is limited. Herein, a novel thermally activated delayed fluorescence (TADF) emitter which contain Spiro[anthracene-9(10H),9’-[9H]fluoren]-10-one (9-FAO) and 9,9-dimethyl-9,10-dihydroacridine (DMAC) was designed and synthesized. The comp...
Published in 2D Materials
Twistronics heterostructures provide a novel route to control the electronic single particle velocity and thereby to engineer strong effective interactions. Here we show that the reverse may also hold, i.e. that these interactions strongly renormalize the band structure. We demonstrate this mechanism for alternating-twist magic-angle three- and fou...
Published in Nanotechnology
Twisted graphene, including magic angle graphene, has attracted extensive attentions for its novel properties recently. However, twisted graphene is intrinsically unstable and this will obstruct their application in practice, especially for twisted nano graphene. The twist angles between adjacent layers will change spontaneously. This relaxation pr...
The polarizability of twisted bilayer graphene, due to the combined effect of electron-hole pairs, plasmons, and acoustic phonons is analyzed. The screened Coulomb interaction allows for the for- mation of Cooper pairs and superconductivity in a significant range of twist angles and fillings. The tendency toward superconductivity is enhanced by the...
Published in Soft robotics
Variable-stiffness artificial muscles are important in many applications including running and hopping robots, human-robot interaction, and active suspension systems. Previously used technologies include pneumatic muscles, layer and granular jamming, series elastic actuators, and shape memory polymers. All these are limited in terms of cost, comple...
Published in Proceedings of the National Academy of Sciences of the United States of America
Bilayer graphene twisted by a small angle shows a significant charge modulation away from neutrality, as the charge in the narrow bands near the Dirac point is mostly localized in a fraction of the Moiré unit cell. The resulting electrostatic potential leads to a filling-dependent change in the low-energy bands, of a magnitude comparable to or larg...
In this collection I have explored the paradox of perfection. The collection is an epic tribute to my prior self and discovers how the unperfect can be transformed to something, perceived, perfect. I flirt with my past obsessions in finding mathematically measured legs, exact tailored arms and perfectly fitted stockings. In a fun, poetic and melanc...
The Casimir effect is an interaction between the boundaries of a finite system when fluctuations in that system correlate on length scales comparable to the system size. In particular, the critical Casimir effect is that which arises from the long-ranged thermal fluctuation of the order parameter in a system near criticality. Recent experiments on ...
The Casimir effect is an interaction between the boundaries of a finite system when fluctuations in that system correlate on length scales comparable to the system size. In particular, the critical Casimir effect is that which arises from the long-ranged thermal fluctuation of the order parameter in a system near criticality. Recent experiments on ...
The Casimir effect is an interaction between the boundaries of a finite system when fluctuations in that system correlate on length scales comparable to the system size. In particular, the critical Casimir effect is that which arises from the long-ranged thermal fluctuation of the order parameter in a system near criticality. Recent experiments on ...
