公开(公告)号：US20230393090A1

公开(公告)日：2023-12-07

申请号：US18032011

申请日：2021-10-13

Applicant: UNIVERSITEIT LEIDEN

Inventor： Gerard Jacob Pieter van WESTEN ,  Hans Michiel de BRUIJN ,  Gregory Fabrice SCHNEIDER ,  Xuhan LIU ,  Erik Pieter van GEEST ,  Sylvestre Antoíne BONNET

IPC: G01N27/414 ,  G01N33/00

CPC classification number: G01N27/4141 ,  G01N27/04 ,  G01N33/0034

Abstract: There is provided a gas sensing apparatus (30) for sensing one or more analytes in a gas or gas mixture. The gas sensing apparatus (30) comprises: a plurality of sensors (32), each sensor (32) including a polymer layer (42), each polymer layer (42) made of a respective different type of chemically non-selective or semi-selective polymer; and a measurement device (38) configured to measure a change in parameter of each sensor (32) responsive to interaction of an analyte with the respective polymer layer (42).

公开(公告)号：US20230025535A1

公开(公告)日：2023-01-26

申请号：US17786238

申请日：2020-12-21

Applicant: UNIVERSITEIT LEIDEN

Inventor： Pauline Marthe Gerardina VAN DEURSEN ,  Gregory Fabrice SCHNEIDER ,  Alexander KROS ,  Viorica TUDOR

IPC: G01N23/2202 ,  G01N1/28 ,  H01J37/20

Abstract: A thin film liquid cell suitable for transmission electron microscopy at room temperature is fabricated as follows. A thin film floating on a liquid is prepared. A droplet of the liquid with the thin film floating thereon is transferred to a support by means of a loop. The loop carries the droplet and the droplet carries the thin film during this transfer. Sufficient liquid from the droplet on the support is removed to form the thin film liquid cell.