title: Diffractive Optics From Self-Assembled DNA.
abstract: An algorithm is presented for assembling tiles into a variable spaced grating, the one-dimensional analog of a Fresnel zone plate. The algorithm supports multi-level gratings. The x-ray properties of such a grating, assumed to be constructed from DNA are estimated, leading to the conclusion that thick structures may be useful for intermediate energy x rays, but that thin structures for soft x rays are best used as disposable masks. The diffraction of cold, coherent atoms is a plausible application for single layer stencils.
authors.affiliation: National Institute of Standards and Technology, Gaithersburg, MD 20899-8410.
authors.forename: Zachary H
authors.initials: ZH
authors.lastname: Levine
keywords: DNA; atom optics; diffractive optics; tiling; x-ray optics