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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Sarkar, D. Mandal, M. Das, R. Mandal, K. |
| Copyright Year | 1965 |
| Abstract | Fabrication of nanomaterials in precisely 1-D or 2-D fashion is very difficult because the particles are very much active when their dimension is reduced and they tend to aggregate. Self-aggregation of nanoparticles can be avoided by their templating growth. We have biofunctionalized the magnetic nanoparticles (iron), aligned them in a chain-like fashion, made them electrically conducting all by using DNA as template. We coated the particles by gold as gold coating prevents them from oxidization. Average size of the synthesized DNA templated Fecore -Aushell particles are found to be ~ 14 nm from transmission electron microscopy (TEM) analysis. Fourier transformed infrared (FTIR) spectroscopic analysis was performed to investigate the bonding between metal ions and the DNA chain. Magnetic measurements of the particles show that the particles are ferromagnetic within 80 ≤ T ≤ 300 K but saturation magnetization (MS) and coercivity (HC) decreases with increasing temperature. These DNA templated, trifunctional Fecore-Aushell particles have great potential of finding applications in magnetically driven, spin-dependent devices as well as in hybrid devices. |
| Sponsorship | IEEE Magnetics Society |
| Starting Page | 3163 |
| Ending Page | 3166 |
| Page Count | 4 |
| File Size | 770731 |
| File Format | |
| ISSN | 00189464 |
| Volume Number | 47 |
| Issue Number | 10 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2011-10-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | DNA Iron Gold Nanoparticles Magnetization Saturation magnetization Temperature measurement trifunctional Biologically functionalized |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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