query: Why is graphene the only (stable) 2D sheet structure?
positive_passages.docid: 150498
positive_passages.text: Why a mono-atomic crystal layer (2D) can't be stable?
negative_passages.docid: 24976
negative_passages.text: An uniformly charged infinite surface plane
negative_passages.docid: 136849
negative_passages.text: Mathematical rigorous introduction to solid state physics
negative_passages.docid: 147468
negative_passages.text: How do we define capillary number in 2D (two dimensions)
negative_passages.docid: 105371
negative_passages.text: What is the physics behind origami?
negative_passages.docid: 29133
negative_passages.text: Electrical conduction using band theory
negative_passages.docid: 138214
negative_passages.text: Why does a surface always exert force normal to it?
negative_passages.docid: 81178
negative_passages.text: Why are the two outer charge densities on a system of parallel charged plates identical?
negative_passages.docid: 58800
negative_passages.text: Why is 3D stress tensor acting only on three surfaces?
negative_passages.docid: 122670
negative_passages.text: Explanation for $E~$ not falling off at $1/r^2$ for infinite line and sheet charges?
negative_passages.docid: 37595
negative_passages.text: Modelling transparent boundary conditions on a three-bonded quantum graph
negative_passages.docid: 84229
negative_passages.text: Why the galaxies form 2D planes (or spiral-like) instead of 3D balls (or spherical-like)?
negative_passages.docid: 89846
negative_passages.text: The workings of the Hall effect?
negative_passages.docid: 49376
negative_passages.text: Why are the holes in my polygons not generalized?
negative_passages.docid: 104105
negative_passages.text: Are antiparticles just particle-shaped holes?
negative_passages.docid: 44624
negative_passages.text: Why do non-hydrogen atomic orbitals have the same degeneracy structure as hydrogen orbitals?
negative_passages.docid: 12876
negative_passages.text: Why can't electrostatic field lines form closed loops?