Self-assembled molecular magnets on patterned silicon substrates: Bridging bio-molecules with nanoelectronics

Chia-Ching Chang, Kien-Wen Sun*, Shang Fan Lee, Lou Sing Kan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

The paper reports the methods of preparing molecular magnets and patterning of the molecules on a semiconductor surface. A highly magnetically aligned metallothionein containing Mn and Cd (Mn,Cd-MT-2) is first synthesized, and the molecules are then placed into nanopores prepared on silicon (0 0 1) surfaces using electron beam lithography and reactive ion-etching techniques. We have observed the self-assemble growth of the MT molecules on the patterned Si surface such that the MT molecules have grown into rod or ring type three-dimensional nanostructures, depending on the patterned nanostructures on the surface. We also provide scanning electron microscopy, atomic force microscopy, and magnetic force microscope studies of the molecular nanostructures. This engineered molecule shows molecular magnetization and is biocompatible with conventional semiconductors. These features make Mn,Cd-MT-2 a good candidate for biological applications and sensing sources of new nanodevices. Using molecular self-assembly and topographical patterning of the semiconductor substrate, we can close the gap between bio-molecules and nanoelectronics built into the semiconductor chip.

Original languageEnglish
Pages (from-to)1941-1947
Number of pages7
JournalBiomaterials
Volume28
Issue number11
DOIs
StatePublished - 1 Apr 2007

Keywords

  • Electron beam lithography
  • Molecular magnet
  • Silicon
  • Surface modification

Fingerprint Dive into the research topics of 'Self-assembled molecular magnets on patterned silicon substrates: Bridging bio-molecules with nanoelectronics'. Together they form a unique fingerprint.

Cite this