Results 1 to 10 of about 313,860 (203)

Synthesis and properties of mirror-like large-grain graphite films [PDF]

open access: yesNature Communications
Graphite films with large grain sizes have been reportedly obtained by using metal as catalysts, but the obtained graphite is mostly heavily wrinkled, thus containing defects that degrade its properties.
Liyuan Zhang   +11 more
doaj   +2 more sources

Yuan time metal mirror from the collection of the Altai State Museum of Local Lore [PDF]

open access: yesВестник археологии, антропологии и этнографии, 2021
This article is concerned with the Chinese metal mirror, which, as it has been found during the study, has been stored for a long time in the collection of the Altai State Museum of Local Lore, but as yet has not attracted the attention of specialists ...
Seregin N.N.   +3 more
doaj   +1 more source

Employment of gradient metal-film output mirrors in terahertz discharge lasers [PDF]

open access: yesРадиофизика и электроника, 2021
Subject and Purpose. The problem of output beam matching with the waveguide transmission line often arises when using terahertz lasers. The special quasi-optical devices that are used to combat the problem lead to radiation losses and additional material
M.I. Dzyubenko   +7 more
doaj   +1 more source

Design and Fabrication Technology of Metal Mirrors Based on Additive Manufacturing: A Review

open access: yesApplied Sciences, 2021
In recent years, much progress has been made on the development of metal mirrors based on additive manufacturing (AM). The sandwich mirror is well known for its excellent mechanical properties and challenging machining.
Kai Zhang   +7 more
doaj   +1 more source

Metal Wear of the Ancient Nomads of the Altai Foothills: Х-ray fluorescence analysis and cultural-chronological attribution

open access: yesПоволжская археология, 2022
For a long time, the Mayemir (Mayemer) culture of the Early Saka period was considered insufficiently well-studied. By now the range of sources has expanded considerably with the excavation of barrows at several burial grounds.
Tishkin Alexey A.
doaj   +1 more source

Metal mirror of Iran and China [PDF]

open access: yesنگره, 2017
The art of metalwork is an Iranian form of handcraft that dates back to thousands of years ago. Each art piece representing the culture and custom of the people from the era it was made.
Nasrin Dastan, mona bakhshandeh
doaj   +1 more source

Fundamental study on optical performance of low-melting-point metal mirrors for space telescopes

open access: yesResults in Optics, 2023
The installation of telescopes with larger primary mirrors in outer space is required for the study of the early universe. However, the shipping, assembling and maintenance of the primary mirror are technical challenges.
Eisuke Imaizumi   +4 more
doaj   +1 more source

Sub-Nanometer Accuracy Combination Processing Technology for Nickel–Phosphorus Modified Surfaces Based on Aluminum Reflector Mirror

open access: yesMicromachines, 2022
The surface of metal mirrors is often polished by electroless coating with a Ni–P modified layer after single-point diamond turning. In practice, however, improvements in mirror quality are closely related to the polishing environment, polishing medium ...
Hao Hu   +7 more
doaj   +1 more source

Measurement of electrodynamic characteristics of flat metal gratings in the teraherz range [PDF]

open access: yesРадиофизика и электроника, 2019
Subject and purpose. The terahertz frequency range now attracts much attention of researchers and consumers in connection with the wide possibilities of using it for solving a number of problems in science, technology and medicine.
M.I. Dzyubenko   +3 more
doaj   +1 more source

Casimir force between metallic mirrors [PDF]

open access: yesThe European Physical Journal D - Atomic, Molecular and Optical Physics, 2000
We study the influence of finite conductivity of metals on the Casimir effect. We put the emphasis on explicit theoretical evaluations which can help comparing experimental results with theory. The reduction of the Casimir force is evaluated for plane metallic plates. The reduction of the Casimir energy in the same configuration is also calculated.
Lambrecht, Astrid, Reynaud, Serge
openaire   +3 more sources

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