The Construction of a Graphene Hall Effect Magnetometer

Izci D., Dale C., Keegan N., Hedley J.

IEEE SENSORS JOURNAL, cilt.18, sa.23, ss.9534-9541, 2018 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 18 Sayı: 23
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1109/jsen.2018.2872604
  • Dergi Adı: IEEE SENSORS JOURNAL
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.9534-9541
  • Bursa Uludağ Üniversitesi Adresli: Hayır

Özet

This paper deals with design and fabrication of graphene micro-Hall devices along with driving and processing electronics to construct a highly sensitive graphene magnetometer system. Graphene micro-Hall elements were fabricated by implementing microfabrication techniques. Custom driving and processing circuitry was designed and built on a printed circuit board and integrated with fabricated graphene Hall devices; reducing the offset equivalent magnetic field and greatly improving the sensitivity. The performance parameters were quantitatively analyzed for characterizing the sensitivity in terms of linearity, current-related sensitivity, and magnetic field resolution. The potential of graphene magnetometers for detection capability of low fields has been demonstrated with a current related sensitivity of 2540 V/AT and magnetic field resolution of 162 nT/root Hz.