PPT-Variable Diffraction Gratings from

Kirigami Nanocomposite L Xu X Wang Y Kim T C Shyu J Lyu NA Kotov Kirigami Nanocomposites as WideAngle Diffraction Gratings ACS Nano 2016 10 6 61566162. brPage 1br USING CDs AND DVDs AS DIFFRACTION GRATINGS brPage 2br Purpose of CDs and DVDs as Diffraction Gratings Activity brPage 3br CDs and DVDs as Diffraction Gratings brPage 4 Before the 1950s the prism was the pr imary dispersive element in spectrometer designs The use of an epoxy replication process in the 1950s led to the mass production of plane ruled reflective diffraction gratings New availability of ruled gratings 01 2011 4 SOL Lab reports are not turned in Labs from Week 2 your second lab are due last week Labs from Week 3 your third lab are due This week You will not be permitted to do labs next week if you have not submitted any reports by then No Lab Nov ASTR 3010. Lecture 16. Textbook Ch. 11. Spectroscopy in astronomy. spectroscope – an instrument to look through visually. spectrometer – measures a spectrum . spectrograph – records a spectrum. Textbook sections 28-4 – 28-6. Physics 1161:. . . Lecture 21. Recall. Interference . (at least 2 coherent waves). Constructive (full wavelength difference). Destructive (½ wavelength difference). By Cade Grigsby. 1. What can X-ray diffraction tell us?. Structure. Bonds. Length. Type. Arrangement. Geometry of crystal. Picture. Electron density map. Diffraction. Angle. Intensity. 2. From X-Rays to Structure. Zone plate. Laser-beam . diffraction. A lens transforms a Fresnel . diffraction problem to a . . Fraunhofer. diffraction problem.. The lens as a Fourier transformer. Diffraction gratings & spectrometers. Using Diffraction Gratings. Forrest . Smith. 1. , . Weliton . Soares. 2. , . Samuel . Alves. 2. , . Itamar Vidal. 2. , . Marcos . Oria. 2. . 1. State University of New York at Geneseo, . 2. Federal University of Paraiba. Using Diffraction Gratings. Forrest . Smith. 1. , . Weliton . Soares. 2. , . Samuel . Alves. 2. , . Itamar Vidal. 2. , . Marcos . Oria. 2. . 1. State University of New York at Geneseo, . 2. Federal University of Paraiba. 4: Diffractive Optics. Prof. Juejun (JJ) Hu. hujuejun@udel.edu. Diffraction: scattering of light by periodic structures. Wikipedia: a diffraction grating is an optical component with a periodic structure, which splits and diffracts light into several beams travelling in different directions. Introduction I. History. 1895. Wilhelm Conrad R. ӧ. ntgen. discovered . X-rays. 1905 . Albert Einstein introduces the concept of photons (concept not accepted until 1922). 1913 . Max von . Instrument Report:. Contents. Diffraction Mechanism. C. onstruction . of . the . Diffractometer. Applications . of . XRD. Data . A. nalysis . and . Explanation. 2D XRD. XRD Simulation. Diffraction . Mechanism. Capella. Grating Data and the Emission Line Project - An Update. Priya Desai (CfA). Nancy Brickhouse. Jeremy Drake. Dave Huenenmoerder. Randall Smith. Andrea Dupree. Vinay Kashyap. . July 11. . CD/DVD drive. Image top. : . http://en.wikipedia.org/wiki/File:Dismdvd.. jpg. Image bottom: . http://. commons.wikimedia.org. /wiki/. File:DVD_querschnitt.svg. (. Creative Commons license). How does a CD/DVD store data?.