Patent ID: 11931714
Assignee: FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. An apparatus comprising: a substrate comprising a recess; and a multitude of particles arranged in the recess; wherein a first portion of the particles is joined to form a porous structure by means of a coating, and wherein a second portion of the particles is not joined by means of the coating; and wherein the first portion of the particles is arranged closer to an opening of the recess than the second portion of the particles so that a leaking of the second portion of the particles from the recess through the opening is prevented; wherein the particles of the second portion are configured to react with a fluid and/or to bind the fluid or a substance thereof; and wherein the second portion comprises a number of particles which is greater than a number of particles of the first portion by a factor of at least 1.1; wherein the particles of the first portion are joined by means of chemical vapor deposition, atomic layer deposition or atomic vapor deposition.