Tunable nanotextured materials
A material with nanopillar structures extending from a substrate. The nanopillars are engageable by organisms to cause an interaction, such as cellular destruction.
1. A nanotextured material comprising:
a substrate having a plurality of nanopillars extending there from and having a density of between 2 and 20 pillars per micrometer squared, at least a portion of the plurality of nanopillars being functionalized with silane chemistry;
each of the plurality of nanopillars having a narrowed tip opposite the substrate, each nanopillar tip having a tip angle of 20° to 10° and a length of between 400 nm and 10 μm, with an aspect ratio of 14-16, each nanopillar tip comprising from 18% to 50% of the length for each respective one of the plurality of nanopillars; and
the plurality of nanopillars forming clusters, each cluster comprising at least two nanopillars.
2. The nanotextured material of claim 1 , wherein each of the plurality of nanopillars has a nanopillar diameter of 50 nm to 490 nm.
3. The nanotextured material of claim 1 , wherein the substrate and nanopillars comprise silicon.
4. The nanotextured material of claim 1 wherein the substrate is a wafer.
5. The nanotextured material of claim 1 , wherein the plurality of nanopillars comprise a first set with a first pillar height and a second set with a second pillar height different from the first pillar height.