公开(公告)号：US20220316784A1

公开(公告)日：2022-10-06

申请号：US17709398

申请日：2022-03-30

Applicant: FEI Company

Inventor： Maarten KUIJPER ,  Hervé REMIGY ,  Mathijs Petrus Wilhelmus VAN DEN BOOGAARD ,  Adrian KOH ,  Ivanka SPEE ,  John HAZENBERG ,  Marius VAN DER DOES

IPC: F25D3/10 ,  F25D29/00

Abstract: The invention relates to a method and an apparatus for preparing a cryogenic sample, whereby the sample is subjected to rapid cooling using a cryogen. A pair of conduits for transporting cryogenic fluid are provided, each of which conduits opens out into a mouthpiece, which mouthpieces are arranged to face each other across an intervening gap, wherein in said gap a sample that is provided on a substantially planar sample carrier can be received. Cryogenic fluid can be pumped through said conduits so as to concurrently flush from said mouthpieces and suddenly immerse the sample in cryogenic fluid from two opposite sides. As defined herein, at least one of said mouthpieces comprises at least two nozzle openings for evenly cooling said substantially planar sample carrier during said flushing.

公开(公告)号：US20240271850A1

公开(公告)日：2024-08-15

申请号：US18643866

申请日：2024-04-23

Applicant: FEI Company

Inventor： Maarten KUIJPER ,  Hervé REMIGY ,  Mathijs Petrus Wilhelmus VAN DEN BOOGAARD ,  Adrian KOH ,  Ivanka SPEE ,  John HAZENBERG ,  Marius VAN DER DOES

IPC: F25D3/10 ,  F25D29/00 ,  G01N1/42

CPC classification number: F25D3/10 ,  F25D29/001 ,  G01N1/42

Abstract: The invention relates to a method and an apparatus for preparing a cryogenic sample, whereby the sample is subjected to rapid cooling using a cryogen. A pair of conduits for transporting cryogenic fluid are provided, each of which conduits opens out into a mouthpiece, which mouthpieces are arranged to face each other across an intervening gap, wherein in the gap a sample that is provided on a substantially planar sample carrier can be received. Cryogenic fluid can be pumped through the conduits so as to concurrently flush from the mouthpieces and suddenly immerse the sample in cryogenic fluid from two opposite sides. As defined herein, at least one of the mouthpieces comprises at least two nozzle openings for evenly cooling the substantially planar sample carrier during the flushing.