5 research outputs found
Intrinsically-multilayer moir\'e heterostructures
We introduce trilayer and multilayer moir\'e heterostructures that cannot be
viewed from the ``moir\'e-of-moir\'e" perspective of helically-twisted trilayer
graphene. These ``intrinsically trilayer" moir\'e systems feature periodic
modulation of a local quasicrystalline structure. They open the door to
realizing moir\'e heterostructures with vastly more material constituents
because they do not constrain the lattice constants of the layers. In this
manuscript, we define intrinsically multilayer patterns, provide a recipe for
their construction, derive their local configuration space, and connect the
visual patterns to physical observables in material systems.Comment: Fixed missing figur
Topological and stacked flat bands in bilayer graphene with a superlattice potential
We show that bilayer graphene in the presence of a 2D superlattice potential
provides a highly tunable setup that can realize a variety of flat band
phenomena. We focus on two regimes: (i) topological flat bands with non-zero
Chern numbers, C, including bands with higher Chern numbers |C| > 1; and (ii)
an unprecedented phase consisting of a stack of nearly flat bands with C = 0.
For realistic values of the potential and superlattice periodicity, this stack
can span nearly 100 meV, encompassing nearly all of the low-energy spectrum.
Our results provide a realistic guide for future experiments to realize a new
platform for flat band phenomena.Comment: 4+3 page
Sabot high speed interceptor AE 4273 aircraft design
Today's carrier based deck launched intercept (DLI) mission is a vital one that is aimed at protecting the carrier battle group and detering potential adversaries. The assets deployed on our carrier decks are able to complete this mission but with very limited range. The waverider concept has great potential to increase the range of this carrier based mission. As a result, a request for proposals (RFP) was developed which contains design requirements for an aircraft that can complete this mission through the utilization of waverider technology
Sabot high speed interceptor AE 4273 aircraft design
Today's carrier based deck launched intercept (DLI) mission is a vital one that is aimed at protecting the carrier battle group and detering potential adversaries. The assets deployed on our carrier decks are able to complete this mission but with very limited range. The waverider concept has great potential to increase the range of this carrier based mission. As a result, a request for proposals (RFP) was developed which contains design requirements for an aircraft that can complete this mission through the utilization of waverider technology.NASW-4435Approved for public release; distribution is unlimited