| 摘要 |
Hollow microspheres or shells having wall through-openings, and methods for manufacture thereof, which find application as microcarriers for anchorage-dependent cell cultivation and as fillers for thermal insulation purposes. Hollow glass or polymeric shells having removal-susceptible wall zones carried by a wall matrix are chemically treated to remove the susceptible zones and thereby leave the matrix wall with through-openings. The shells may be vacuum coated to obtain a discrete reflective surface layer which seals an evacuated interior, or, in the case of glass, the shells may be vacuum sintered to close the through-openings, and then coated to obtain the reflective surface layer. |
