Integrated silicon photovoltaics on CMOS with MEMS module for catheter tracking
Küçük Resim Yok
Tarih
2015
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Institute of Electrical and Electronics Engineers Inc.
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
This paper presents an electromagnetic actuation-based optoelectronic active catheter tracking system for magnetic resonance imaging (MRI). The system incorporates a radio frequency (RF) microelectromechanical system (MEMS) resonator array actuated by the Lorentz force induced due to the strong dc magnetic field available in MRI environment. Power transfer to the system and the actuation detection are done optically via fiber optic cables that replace conventional conductive transmission lines; thereby, enabling the tracking system to function safely under MRI. The complementary metal-oxide-semiconductor (CMOS) receiver, optically powered by a supply unit housing an on-chip silicon photovoltaic cell, detects the location of the catheter tip. The RF MEMS resonator array transmits the position data by transducing the electrical signal into a resonant mechanical vibration linearly. The optical reading of this actuation can be done by diffraction grating interferometry or laser doppler vibrometry. The fabricated resonator array is tested with the optically powered CMOS chip (0.18-? m UMC technology) in laboratory conditions. The driving electrical current supplied by the chip for resonator actuation is 25-\muA rms, where the magnetic field provided by the experimental setup is 0.62 T. The resonator array is observed to be functional with real-world application by showing a frequency response of 10 dB, which will be enhanced further under the stronger magnetic field available in 3-T MRI. © 1983-2012 IEEE.
Açıklama
Anahtar Kelimeler
Catheter Tracking, Complementary Metal-Oxide-Semiconductor (Cmos), Electromagnetic Actuation, Magnetic Resonance İmaging (Mrı), Microelectromechanical System (Mems), Silicon Photovoltaics, Balloons, Catheters, Dielectric Devices, Electromechanical Devices, Frequency Response, Laser Doppler Velocimeters, Magnetic Fields, Magnetism, Mems, Metallic Compounds, Metals, Microelectromechanical Devices, Micromechanics, Mos Devices, Photoelectrochemical Cells, Photovoltaic Cells, Resonators, Semiconducting Silicon, Silicon, Tracking (Position), Transistors, Vibrations (Mechanical), Catheter Tracking, Complementary Metal Oxide Semiconductors, Electromagnetic Actuation, Micro Electromechanical System (Mems), Photovoltaics, Magnetic Resonance İmaging
Kaynak
Journal of Lightwave Technology
WoS Q Değeri
Scopus Q Değeri
Q1
Cilt
33
Sayı
16
