A Radio-Frequency Atom Chip for Guiding Neutral Atoms
  We propose two kinds of wire configurations fabricated on an atom chip surface for creating two-dimensional (2D) adiabatic rf guide with an inhomogeneous rf magnetic field and a homogenous dc magnetic field. The guiding state can be selected by changing the detuning between the frequency of rf magnetic field and the resonance frequency of two Zeeman sublevels. We also discuss the optimization of loading efficiency and the trap depth and how to decide proper construction when designing an rf atom chip. 
Xiaolin Li, Haichao Zhang, Bo Yan, Min Ke, Yuzhu Wang