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- W2068233002 abstract "Next generation space telescopes and interferometric missions will require stringent position and stability tolerances. To do this, these missions will require materials and bonding techniques with ever-increasing stability in order to make their measurements. As an example, the Laser Interferometer Space Antenna (LISA) will detect and observe gravitational waves in the 0.1 mHz to 1 Hz frequency range with strain sensitivities on the order of 10 <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>-21</sup> at its most sensitive frequency. To make these measurements, critical components such as the optical bench or telescope support structure will need to have path-length stabilities of better than 1 pm/√Hz. The baseline construction method for the LISA optical bench is to affix fused silica components to a Zerodur baseplate using hydroxide-catalysis bonding (HCB). HCB is a recently developed technique that allows the bonding of glasses, some metals, and silicon carbide with significant strength and stability with a bond thickness of less than a few micrometers. In addition, a wide range of surface profiles can be bonded using only a small amount of hydroxide solution. These characteristics make HCB ideal for adhering components in complex optical systems. In addition to being used to construct the LISA optical bench, the HCB technique shows great promise for constructing other structures such as hollow retroreflectors to be used for lunar laser ranging, or a visible nulling coronograph to be used for exoplanet detection. Here we present construction techniques that could be used to make an optical bench, hollow retroreflector, nulling coronograph, or other quasi-monolithic structures using HCB. In addition, we present dimensional stability results of an optical bench that was made using HCB, as well as HCB strength measurements." @default.
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- W2068233002 date "2012-03-01" @default.
- W2068233002 modified "2023-09-26" @default.
- W2068233002 title "Quasi-monolithic structures for spaceflight using hydroxide-catalysis bonding" @default.
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- W2068233002 doi "https://doi.org/10.1109/aero.2012.6187157" @default.
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