Title :
Chip-scale magnetic sensing and control of nanoparticles and nanorods
Author :
Choi, Edward ; Zhiyong Gu ; Gracias, D. ; Andreou, Andreas G.
Author_Institution :
Electr. & Comput. Eng., Johns Hopkins Univ., Baltimore, MD
Abstract :
We report on a system designed for the magnetic control of nanoparticles and nanorods. This is accomplished by arrays of current-carrying wires (electromagnets) and the associated control circuitry onto a single chip. The chip serves both as the source of localized programmable magnetic fields and the substrate on which the nanostructures rest. Sensing can be similarly performed through on-chip electromagnetic or optical measurements. As proof of concept, we utilize the catalysis of hydrogen-peroxide decomposition by platinum to propel hybrid nanorods through a fluid medium, and demonstrate basic control of nanoparticles in response to the applied currents (electromagnetic fields)
Keywords :
CMOS integrated circuits; magnetic fields; magnetic sensors; nanoparticles; platinum; rods (structures); Pt; catalysis; chip-scale magnetic sensing; current-carrying wires; electromagnetic fields; electromagnets; fluid medium; hydrogen-peroxide decomposition; magnetic control; nanoparticles; nanorods; Circuits; Control systems; Electromagnets; Magnetic field measurement; Nanoparticles; Nanostructures; Optical sensors; Performance evaluation; Semiconductor device measurement; Wires;
Conference_Titel :
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location :
Island of Kos
Print_ISBN :
0-7803-9389-9
DOI :
10.1109/ISCAS.2006.1692836