Imaging studies of photodegradation and self-healing in anthraquinone derivative dye-doped PMMA

2020 ◽  
Vol 22 (48) ◽  
pp. 28154-28164
Author(s):  
Benjamin R. Anderson ◽  
Mark G. Kuzyk
Keyword(s):  
Self Healing ◽  
Imaging Studies ◽  
Anthraquinone Derivative ◽  
Transmission Imaging ◽  
Anthraquinone Derivatives ◽  
Rules Of Thumb ◽  
Enhanced Photostability

We compare the photodegradation and self-healing properties of nine anthraquinone derivatives doped into PMMA using transmission imaging. The results suggests “rules-of-thumb” to predict enhanced photostability and self-healing for anthraquinones.

scholarly journals Imaging studies of photodamage and self-healing in disperse orange 11 dye-doped PMMA

2011 ◽  
Vol 28 (3) ◽  
pp. 528 ◽  
Author(s):  
Benjamin Anderson ◽  
Shiva K. Ramini ◽  
Mark G. Kuzyk
Keyword(s):  
Self Healing ◽  
Imaging Studies

scholarly journals Enhancing the photostability of poly(phenylene ethynylene) for single particle studies

2017 ◽  
Vol 16 (12) ◽  
pp. 1821-1831 ◽  
Author(s):  
C. F. Calver ◽  
B. A. Lago ◽  
K. S. Schanze ◽  
G. Cosa
Keyword(s):  
Fluorescence Imaging ◽  
Single Molecule ◽  
Single Particle ◽  
Phenylene Ethynylene ◽  
Conjugated Polyelectrolytes ◽  
Imaging Studies ◽  
Single Molecule Fluorescence ◽  
Enhanced Photostability ◽  
The Way

Enhanced photostability of conjugated polyelectrolytes achieved by using anti-fading agents opens the way for advanced single molecule fluorescence imaging studies.

Identification of Asbestos Fibres in a Water Sample by X-Ray Microanalysis

1975 ◽  
Vol 33 ◽  
pp. 274-275
Author(s):  
K. A. Brookes ◽  
D. Finbow ◽  
Madeleine Samuel
Keyword(s):  
Water Sample ◽  
Background Radiation ◽  
X Ray ◽  
Left Hand ◽  
Transmission Imaging ◽  
Different Types ◽  
Normal Specimen ◽  
Liquid Nitrogen Cooling ◽  
Normal Transmission ◽  
Additional Port

Investigation of the particulate matter contained in the water sample, revealed the presence of a number of different types and certain of these were selected for analysis.An A.E.I. Corinth electron microscope was modified to accept a Kevex Si (Li) detector. To allow for existing instruments to be readily modified, this was kept to a minimum. An additional port is machined in the specimen region to accept the detector, with the liquid nitrogen cooling dewar conveniently housed in the left hand cupboard adjacent to the microscope column. Since background radiation leads to loss in the sensitivity of the instrument, great care has been taken to reduce this effect by screening and manufacturing components that are near the specimen from material of low atomic number. To change from normal transmission imaging to X-ray analysis, the special 4-position specimen rod is inserted through the normal specimen airlock.

X-ray Gabor holography

1995 ◽  
Vol 53 ◽  
pp. 612-613
Author(s):  
Steve Lindaas ◽  
Chris Jacobsen ◽  
Alex Kalinovsky ◽  
Malcolm Howells
Keyword(s):  
Surface Relief ◽  
Biological Imaging ◽  
Specimen Preparation ◽  
X Rays ◽  
X Ray ◽  
Water Window ◽  
Biological Objects ◽  
Transmission Imaging ◽  
Atomic Force ◽  
Electron Microscopes

Soft x-ray microscopy offers an approach to transmission imaging of wet, micron-thick biological objects at a resolution superior to that of optical microscopes and with less specimen preparation/manipulation than electron microscopes. Gabor holography has unique characteristics which make it particularly well suited for certain investigations: it requires no prefocussing, it is compatible with flash x-ray sources, and it is able to use the whole footprint of multimode sources. Our method serves to refine this technique in anticipation of the development of suitable flash sources (such as x-ray lasers) and to develop cryo capabilities with which to reduce specimen damage. Our primary emphasis has been on biological imaging so we use x-rays in the water window (between the Oxygen-K and Carbon-K absorption edges) with which we record holograms in vacuum or in air.The hologram is recorded on a high resolution recording medium; our work employs the photoresist poly(methylmethacrylate) (PMMA). Following resist “development” (solvent etching), a surface relief pattern is produced which an atomic force microscope is aptly suited to image.

Autonomous self-healing polyisoprene elastomers with high modulus and good toughness based on the synergy of dynamic ionic crosslinks and highly disordered crystals

2020 ◽  
Vol 11 (41) ◽  
pp. 6549-6558
Author(s):  
Yohei Miwa ◽  
Mayu Yamada ◽  
Yu Shinke ◽  
Shoichi Kutsumizu
Keyword(s):  
Mechanical Properties ◽  
Room Temperature ◽  
Self Healing ◽  
High Modulus ◽  
Disordered Crystals ◽  
Ionic Crosslinks

We designed a novel polyisoprene elastomer with high mechanical properties and autonomous self-healing capability at room temperature facilitated by the coexistence of dynamic ionic crosslinks and crystalline components that slowly reassembled.

Congenital self-healing histiocytosis

1982 ◽  
Vol 118 (4) ◽  
pp. 267-272 ◽  
Author(s):  
E. Bonifazi
Keyword(s):  
Self Healing
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