Carmichael’s Concise Review
Coming Events 2018
EBSD 2018 - Electron Backscatter Diffraction Conference May 23–25, 2018 Ann Arbor, MI
www.microbeamanalysis.org/topical-conferences/ ebsd-2018
Cell Symposium: Multifaceted Mitochondria June 4–6, 2018 San Diego, CA
www.cell-symposia.com/mitochondria-2018
Atom Probe Tomography and Microscopy June 10–15, 2018 Gaithersburg, MD
www.nist.gov/news-events/events/2018/06/ atom-probe-tomography-and-microscopy-2018-aptm-2018
Inter/Micro 2018 June 11–15, 2018 Chicago, IL
www.mcri.org/v/101/InterMicro
EXRS2018 - European Conference on X-Ray Spectrometry June 24–29, 2018
Ljubljana, Slovenia
https://exrs2018.ijs.si
Society for Ultrastructural Pathology Meeting (Ultrapath XIX) June 24–29, 2018
Newport, RI
www.ultrapath.org
EMAG 2018: Applications of Electron Microscopy to Beam Sensitive Material July 4–6, 2018 Warwick, UK
http://emag2018.iopconfs.org/home
Microscopy & Microanalysis 2018 August 5–9, 2018
Baltimore, MD
www.microscopy.org 2019
Microscopy & Microanalysis 2019 August 4–8, 2019
Portland, OR
www.microscopy.org 2020
Microscopy & Microanalysis 2020 August 2–6, 2020
Milwaukee, WI
www.microscopy.org 2021
Microscopy & Microanalysis 2021 August 1–5, 2021
Pittsburgh, PA
www.microscopy.org 2022
Microscopy & Microanalysis 2022 July 31–August 4, 2022
Portland, OR
www.microscopy.org 2023
Microscopy & Microanalysis 2023 July 24–28, 2023
Minneapolis, MN
www.microscopy.org
More Meetings and Courses Check the complete calendar near the back of this magazine.
8
Figure 1 : Male rainbow peacock spider M. robinsoni . (a) SEM image of iridescent scales (white arrowhead) and black scales (black arrowhead). Scale bar = 200 μ m. (b) SEM image showing periodic grating structures on the surfaces of the iridescent scales. Scale bar = 5 μ m. (c) TEM image showing regular binary-phase surface gratings on the surface of a scale with an airfoil profi le. Scale bar = 5 μ m. (d) Visible light image showing that each iridescent scale (about 40 μ m × 10 μ m) hosts two microscopic rainbows (center black square is 4 μ m × 4 μ m). Images courtesy of Bor-Kai Hsiung.
doi: 10.1017/S1551929518000494 2018 May
Color produced by wavelength-dependent light scattering is a key component of visual communication in nature and plays a particularly important role in visual signaling by structurally colored animals during courtship. This is true in the avian peacock and its namesake, the male rainbow peacock spider. Maratus is a spider genus of the family Salticidae (jumping spiders), which are commonly referred to as peacock spiders. Recently an international, multi-disciplinary team headed by Bor-Kai Hsiung [1] used scanning electron microscopy (SEM) and transmission electron microscopy (TEM) to determine what is responsible for the rainbow- hued visible light signal from two species of these spiders, M. robinsoni and M. chrysomelas .
Both species have two types of visually distinct abdominal scales: rainbow- iridescent scales and velvet black scales. SEM revealed that the black scales are brush-like and randomly oriented, whereas the iridescent scales are aligned in a more orderly fashion ( Figure 1a ). At higher magnification, SEM showed the
Would You Expect to Find the Smallest Natural Rainbow on a Spider?
Stephen W. Carmichael Mayo Clinic , Rochester , MN 55905
carmichael.stephen@
mayo.edu
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68
