title: Shape-coded silica nanotubes for biosensing.
abstract: Shape-coded silica nanotubes (SNTs) were fabricated on the basis of template synthesis as a new dispersible microarray system. The template synthesis of shape-coded SNTs begins with the fabrication of a porous alumina film that has well-defined cylindrical pores with two or more different diameter segments by multistep anodization of an aluminum substrate. Then, SNTs were fabricated with a surface sol-gel method that can control the wall thickness of SNTs on the single-nanometer level. Attractively, the difference in optical reflectance between the segmented parts of individual silica nanotube makes it very convenient to identify each nanotube and enables these shape-coded SNTs to work as coding materials for biosensing.
authors.affiliation: Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA.
authors.forename: Bo
authors.initials: B
authors.lastname: He
authors.forename: Sang Jun
authors.initials: SJ
authors.lastname: Son
authors.forename: Sang Bok
authors.initials: SB
authors.lastname: Lee
mesh_terms: D015374:Biosensing Techniques; D046228:Microarray Analysis; D043942:Nanotubes; D012822:Silicon Dioxide
chemical_list: D012822:Silicon Dioxide