Conveners
WED: Session 4
- Rafael Perez del Real (Institute of Materials Science of Madrid, ICMM-CSIC)
WED: Session 5
- Ivan Škorvánek (Institute of Experimental Physics SAS)
WED: Session 6
- Victor Sverdlov (CDL for NovoMemLog, IuE, TU Wien)
Magnetization dynamics by pulse excitation in amorphous wire is limited in the surface layer by skin effect due to magnetic rotation. We have constituted highly sensitive linear micro magnetic field sensors utilizing off-diagonal Magneto-Impedance (MI) effect [１]. Recently we have succeeded in producing pico-Tesla ($10^{-8}$ Oe) resolution MI sensors [2] due to ultra-low intrinsic magnetic...
Classically, the ultimate or intrinsic noise of a sensor is studied/given by the help of the Fluctuation Dissipation Theorem (FDT). Here, we have investigated the magnetic noise of the Planar Hall MagnetoResistance (PHMR) sensor [1] based on this phenomenological physical description [2] and experimental measurements. Indeed, the ellipse surface given by the sensor response, lying $B$ (sensed...
Flat 2-D alignment sensors are required by the printing industry for precise mounting of the plate on the drum to avoid position misalignment in the overlapped patterns. Another application is for the coil alignment for contactless charging. High linearity is not required as the sensor serves as a null indicator in the automatic alignment process. The sensor should be very thin and the moving...
This work introduces a miniaturized fluxgate sensor integrated on a chip fabricated using CMOS technology. The sensor uses a "acetrack" shape of the core, laser-cut out of a 25 $\mu$m thick sheet of VITROVAC 6025F amorphous metal. The structure is Vacquier type, with solenoid excitation and sensing coils. The coils are fabricated using chip’s metal layer and bonding wires. The sensing coil...
3D Packing emerges as a novel method to push the detectivity of TMR sensors to state-of-the-art pT detectivities by vertically connecting TMR sensors in parallel. Diverging from conventional sensor design strategies that rely on creating 2D arrays, this innovative approach preserves a compact footprint crucial for high spatial resolution where xMR technologies excel [1].
In this work, we...
The precise delivery of bio-functionalized matters is of great interest in emerging biomedical technologies from the fundamental and applied viewpoints. Particularly, most existing single cell platforms are unable to achieve large scale operation with flexibility on cells and digital manipulation towards multiplex cell tweezers. Recently, the flexibility of magnetic shuttling technology using...
Continuous non-invasive monitoring of vital signs, such as heart rate and blood pressure, is essential for preventive care and managing chronic conditions. Techniques like photoplethysmography (PPG) and electrocardiogram are widely used to extract these signals, but they have limitations in terms of working conditions due to the requirement of good skin contact.To address the limitations of...
Magnetic microsensors have been proposed for the monitoring of various processes and functionalities for diverse industries and soft magnetic materials can be used for a large variety of sensors [1]. Amorphous ferromagnetic and nanocrystalline wires show interesting properties for giant magnetoimpedance (GMI) or domain wall propagation. The effectiveness of the GMI is connected to the applied...
Magnetic nanoparticles detection in fluid media is a promising technique for identifying biomolecules, antigens, pollutants, etc. that can be attached to their properly functionalised surface. Magnetic detection allows non-contact sensing, and many different effects, including magnetophoresis, magnetoresistance, magneto-impedance, optical and mechanical resonance ones can be exploited to...
Magnetotactic bacteria are aquatic microorganisms able to swim along the Earth’s magnetic field lines thanks to an internal chain of magnetic nanoparticles that acts as a compass needle. These nanoparticles, called magnetosomes, are composed of a high purity crystalline magnetic core surrounded by a lipid bilayer membrane. For example, as a typical magnetotactic bacteria, the *Magnetospirillum...
Magnetoresistive sensors can deliver high sensitivity and spatial resolution in magnetic field detection, ideal to leverage applications in navigation, robotics or biomedicine. Being able to manipulate the device’s properties, as needed and during operation, has the potential to push further the limits of performance, and broaden applications of spintronic sensors. In this talk, recent results...
Anisotropic Magnetoresistive (AMR) sensors provide a straightforward, low cost and low power consumption solution for magnetic field sensing applications [1]. Despite being a mature technology, a vertical sensor packing strategy in parallel electrical connection can be beneficial for AMR devices, by reducing their electrical noise without increasing the device footprint. These advantages were...
Magnetic field detection devices are highly valuable in many industries, thanks to the fact that they can measure various quantities such as position, movement, direction, and rotational speed. Nowadays, there is a high demand for electronics that can function reliably in harsh environments, including those that can withstand extreme temperatures. Traditional electronics design often requires...
Many technological applications require low permeability of a few hundreds being constant over a wide magnetic field range. For example, this is a case of magnetic energy storage cores [1]. It is well known that magnetic anisotropy induced by stress applied during annealing can reach magnitudes up to several thousands of J/m$^{3}$ which is about two orders of magnitude larger than the magnetic...
Presented article briefly explain the history and the success of applied magnetism, that has been the main focus of research and development scientist group originally seated at Slovak Air Force Academy of Milan Rastislav Štefánik in Košice. The group was focused on measuring of magnetic field since 1982 when they develop the first digital magnetometer in former Czechoslovakia.
Knowledge...
