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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Duong, Binh Khurshid, Hafsa Gangopadhyay, Palash Devkota, Jagannath Stojak, Kristen Srikanth, Hariharan Tetard, Laurene Norwood, Robert A. Peyghambarian, N. Phan, Manh-Huong Thomas, Jayan |
| Description | Country affiliation: United States Author Affiliation: Duong B ( NanoScience Technology Center, University of Central Florida, FL, 32826, USA.) |
| Abstract | A new approach to develop highly ordered magnetite $(Fe_{3}O_{4})$ nanoparticle-patterned nanohole arrays with desirable magnetic properties for a variety of technological applications is presented. In this work, the sub-100 nm nanohole arrays are successfully fabricated from a pre-ceramic polymer mold using spin-on nanoprinting (SNAP). These nanoholes a then filled with monodispersed, spherical $Fe_{3}O_{4}$ nanoparticles of about 10 nm diameter using a novel magnetic drag and drop procedure. The nanohole arrays filled with magnetic nanoparticles a imaged using magnetic force microscopy (MFM). Magnetometry and MFM measurements reveal room temperature ferromagnetism in the $Fe_{3}O_{4}-filled$ nanohole arrays, while the as-synthesized $Fe_{3}O_{4}$ nanoparticles exhibit superparamagnetic behavior. As revealed by MFM measurements, the enhanced magnetism in the $Fe_{3}O_{4}-filled$ nanohole arrays originates mainly from the enhanced magnetic dipole interactions of $Fe_{3}O_{4}$ nanoparticles within the nanoholes and between adjacent nanoholes. Nanoparticle filled nanohole arrays can be highly beneficial in magnetic data storage and other applications such as microwave devices and biosensor arrays that require tunable and anisotropic magnetic properties. |
| File Format | HTM / HTML |
| ISSN | 16136810 |
| Issue Number | 14 |
| Journal | Small |
| Volume Number | 10 |
| e-ISSN | 16136829 |
| Language | English |
| Publisher | Wiley-VCH |
| Publisher Date | 2014-07-23 |
| Publisher Place | Germany |
| Access Restriction | One Nation One Subscription (ONOS) |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Nanoscience and Nanotechnology Medicine Biomaterials Engineering Biotechnology |
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