Wireless electrodeless piezomagnetic biosensor with an isolated nickel oscillator

• Ogi, Hirotsugu

• Motohisa, Kazuma

• Matsumoto, Takashi

• Mizugaki, Tomoo

• Hirao, Masahiko

Abstract

This study presents a fundamental concept of piezomagnetic biochemical sensor driven in a wireless-electrodeless manner. A stepped cylindrical rod of nickel is used as the oscillator, which traps the vibrational energy of axially-polarized surface-shear waves in the central part, where the diameter is slightly larger. A meander-line coil surrounding the oscillator with an air gap can cause and detect the resonant vibrations of the surface-shear waves via the piezomagnetic effect. The resonant frequency of the trapped-mode resonance is continuously measured to detect human immunoglobulin G (IgG). It decreased by 0.08% when a solution containing IgG was injected into the glass cell where the oscillator was placed alone. This oscillator is useful for fundamental studies of various biochemical reactions in a closed system in different environmental gases and different pressures. © 2005 Elsevier B.V. All rights reserved.

Journal

• Biosensors and Bioelectronics

  Biosensors and Bioelectronics 21 (10), 2001-2005, 2005-11-09

  Elsevier B.V.

Keywords

• Biosensor
• IgG
• Magnetostriction
• Nickel
• Noncontacting
• Wireless

Details

• CRID: 1050018218947138432
• NII Article ID: 120007148347
• NII Book ID: AA10739666
• HANDLE: 11094/84192
• ISSN: 09565663
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • CiNii Articles