发明授权
US07431838B2 Gas/ion species selective membrane support by multi-stage nano-hole array metal structure
失效
气/离子种选择性膜支持多级纳米孔阵列金属结构
- 专利标题: Gas/ion species selective membrane support by multi-stage nano-hole array metal structure
- 专利标题(中): 气/离子种选择性膜支持多级纳米孔阵列金属结构
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申请号: US11502140申请日: 2006-08-09
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公开(公告)号: US07431838B2公开(公告)日: 2008-10-07
- 发明人: Sangkyun Kang , Yong-Il Park , Friedrich B. Prinz , Suk-Won Cha , Yuji Saito , Ali Farvid , Pei-Chen Su
- 申请人: Sangkyun Kang , Yong-Il Park , Friedrich B. Prinz , Suk-Won Cha , Yuji Saito , Ali Farvid , Pei-Chen Su
- 申请人地址: US CA Palo Alto JP Tokyo
- 专利权人: The Board of Trustees of the Leland Stanford Junior University,Honda Motor Co., Ltd
- 当前专利权人: The Board of Trustees of the Leland Stanford Junior University,Honda Motor Co., Ltd
- 当前专利权人地址: US CA Palo Alto JP Tokyo
- 代理机构: Lument Patent Firm, Inc.
- 主分类号: B01D39/00
- IPC分类号: B01D39/00 ; B01D17/00 ; B01D24/00 ; B01D63/00 ; B32B15/00
摘要:
An improved two-step replication process for fabrication of porous metallic membranes is provided. A negative of a porous non-metallic template is made by infiltration of a liquid precursor into the template, curing the precursor to form a solid negative, and removing the template to expose the negative. Metal is deposited to surround the exposed negative. Removal of the negative provides a porous metallic membrane having pores which replicate the pores of the original template membrane. The negative is kept immersed in a liquid at all times between removing the template and depositing the metal. This immersion eliminates damage to the negative that would be incurred in drying the negative out between these processing steps. Another aspect of the invention is metallic membranes prepared according to the preceding method. For example, metallic membranes having pores smaller on one side than on the other side of the membrane are provided.