Nanostructured casting of organic and bio-polymers in porous silicon templates
OwnerYang Yang Li, Frederique Cunin +3inventors
InventorsYang Yang Li, Frederique Cunin, Michael J. Sailor, Jamie R. Link, Ting Gao
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Abstract
A method of generating three-dimensional nanostructures that includes providing a silicon substrate, creating a porous silicon template from the silicon substrate, wherein the template is created to have a predetermined configuration, depositing a predetermined material on the porous silicon template, and removing the porous silicon template from the deposited material to leave a freestanding nanostructure.
Claims30
A method of generating three-dimensional nanostructures comprising:
- providing a silicon substrate;
- creating a porous silicon template from the silicon substrate, said template being created to have a predetermined configuration by a current-modulated electrochemical etching process that is controlled by a predetermined waveform to map a predetermined porosity-depth profile in the porous silicon template;
- depositing a predetermined material into the porous silicon template;
- and
- removing the porous silicon template from the deposited material to leave a freestanding nanostructure.
A method of generating a freestanding porous polymer film having optical characteristics of a template into which it is cast comprising:
- providing a silicon wafer;
- etching the silicon wafer to form a porous template having a predetermined configuration by a current-modulated electrochemical etching process that is controlled by a predeterminded waveform to map a predeterminded porosity-depth profile in the porous silicon template;
- solution casting a thermoplastic polymer into the template;
- and
- dissolving the template to obtain the freestanding porous polymer film.
A method of generating a freestanding mechanically deformable filter comprising:
- providing a silicon wafer;
- etching the silicon wafer to form a porous template having a predetermined configuration by a current-modulated electrochemical etching process that is controlled by predetermined waveform to map a predetermined porosity-depth profile in the porous silicon template;
- depositing a flexible polymer into the template;
- and
- dissolving the template to obtain the freestanding mechanically deformable filter.
A method of generating biocompatible, bioresorbable polymer nanostructures comprising:
- providing a silicon wafer;
- etching the silicon wafer to form a porous template having a predetermined configuration by a current-modulated electrochemical etching process that is controlled by a predetermined waveform to map a predetermined porosity-depth profile in the porous silicon template;
- infusing a predetermined material into the template;
- and
- dissolving the template to obtain the polymer nanostructure.
A method for generating biodegradable nanostructures for controlled drug delivery system comprising:
- providing a silicon substrate;
- etching the silicon wafer to form a porous template having a predetermined configuration by current-modulated electrochemical etching process that is controlled buy a predetermined waveform to map a predetermined porosity-depth profile in the porous silicon template;
- infusing a biodegradable polymer on the template;
- and
- dissolving the template to obtain the polymer nanostructure.
Dependencies are inferred from the claim text.