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. 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 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). Wave Optics. The wave nature of light is needed to explain various phenomena. Interference. Diffraction. The . particle nature of light was the basis for ray (geometric) . optics. Light waves interfere with each other much like mechanical waves do. Diffraction of light when two fingers brought close together . infront of a light source . Diffraction by razor blade when illuminated by intense blue light . “light is never known to follow . crooked passages nor to . LEADING THE WAY IN . GRATING . SOLUTIONS. Forged Welded Grating . |.   Pressure Locked Grating . |.   GRP . | . Perforated Metal Planks. GRP GRATINGS. GRP Isophthalic Polyester moulded panels. 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. Marlowe,. 1. . In collaboration with: . Randall McEntaffer,. 1. . Casey . DeRoo,. 1. . Drew M. . Miles,. 1. . J. ames H. . Tutt,. 1. . Christian . Laubis,. 2. Victor Soltwisch,. 2. . Leonid . Goray. not . from pigmentation (dull brown) but from interference in small structures on the wings. 200 . micron . scale photo. 1. Incandescent bulb viewed through a diffraction grating.. Office Hours: I am available before class 11:30-12:10 MWF and after class on Monday and Friday in WAT 233 and by arrangement (. 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. Learning Goals for Chapter 36. Diffraction. vs. . Interference. Single-slit vs. Multiple-slit diffraction. Calculating intensity . at . points . in . single-slit pattern. .. X. -ray . diffraction reveals . 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.