3D microtube and 2D flexible film waveguide devices

This paper reports microscale three-dimensional (3D) tube-like waveguide array and two-dimensional (2D) flexible waveguide array devices. Such microdevices will offer a new class of optogenetic applications, including light stimuli for specific regions of a neuron (e.g., axons or dendrites) and numerous spherical bio-tissues (e.g., brain and spinal cord).