Mass spectrometry is an analytical technique vastly used in chemistry, biotechnology, food and safety monitoring, pharmaceutics, genomics, proteomics, and many others. Its academic and economic importance in the UK is thoroughly documented by the British Mass Spectrometry Society ( The global market amounts to £ 2.5 billion per year. Small mass spectrometers are available, however all in the low range of mass resolution ∆m/m∈10-3-10-4. The mass resolution of the Geonium Chip is given by the cyclotron resonance ∆ωpp, which we aim at 10-7 or above, thus orders of magnitude better than other small mass spectrometers.

The Geonium Chip technology will deliver a cutting-edge mass spectrometry technology at a much lower cost and size than conventional high-end FT-ICR mass spectrometers, which require a superconducting solenoid. The key factor is the achievement of a homogeneous magnetic field at the position of the trapped ions. This can be done with a local magnetic field source, ie fabricated in the chip.

Detection Circuit Magnetic Field Sketch