File:DiamondAnvilCell 003.jpg
Size of this preview: 800 × 519 pixels. Other resolutions: 320 × 208 pixels | 640 × 416 pixels | 1,024 × 665 pixels | 1,280 × 831 pixels | 2,560 × 1,662 pixels | 4,837 × 3,141 pixels.
Original file (4,837 × 3,141 pixels, file size: 8.51 MB, MIME type: image/jpeg)
Captions
Captions
Add a one-line explanation of what this file represents
Summary edit
| Description |
This device enables scientists to study the effects of pressure on molecular interactions through infrared spectroscopy by permitting application of very high pressures to a specimen squeezed between Diamond Anvils. Instruments like this one, which was designed at NBS around 1960, are now used in many laboratories throughout the world for spectroscopy, microscopy, and x-ray diffraction. In order to study the effects of very high pressure on molecular interactions, finely powdered material is squeezed to a film between the flat surfaces of two gem-cut diamonds. The facets, which form the anvil, have an area of about 0.1 mm, and the diamonds are of Type II, which is transparent to infrared radiation between 1750 -1 and 300 -1. Each diamond is mounted in a close-fitting recess in a piston of 1 cm diameter and having an axial hole, which permits passage of the radiation beam. The anvil faces can be adjusted to parallelism by means of a set of tiny leveling screws. The entire assembly is sufficiently compact to be held on the stage of a microscope or placed in an infrared spectrometer or an x-ray diffractometer. Anvil pressures up to 20 gigapascals (200 kilobars) can be developed, the force being applied to the anvil facets through the mounting pistons by compression of the helical spring acting through the 2:1 level system. |
| Date | |
| Source | National Institute of Standards and Technology |
| Author | National Institute of Standards and Technology |
| Permission (Reusing this file) |
The images in the Diamond Anvil Cell Photographic Collection are in the public domain and are not subject to copyright in the United States. However, please pay special attention to the individual works to make sure there are no copyright restrictions indicated. Individual works may require securing other permissions from the original copyright holder. Use of the images from NIST Digital Collections is not restricted, but a statement of attribution is required. Please use the following attribution statement: "National Institute of Standards and Technology Digital Collections, Gaithersburg, MD 20899." |
Licensing edit
|
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
|
 |
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 16:39, 19 February 2014 | | 4,837 × 3,141 (8.51 MB) | NISTResearchLibrary (talk | contribs) |
You cannot overwrite this file.
File usage on Commons
The following page uses this file:
