Cross-section (IMAGE) University College London Caption Cross-section through the long axis of the glass slide, showing the bobbins for the applied magnetic field and the pick-up coils. Credit London Centre for Nanotechnology Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.