Highly flexible bismuth Hall sensors on polymeric foils are fabricated, and the key optimization steps that required to boost their sensitivity bulk value identified. The sensor can be bent around wrist or positioned finger realize an interactive pointing device for wearable electronics. Furthermore, this technology is of great interest rapidly developing market -eMobility, eMotors magnetic bearings.

Abstract Future electronic skin aims to mimic nature’s original both in functionality and appearance. Although some of the multifaceted properties human may remain exclusive biological system, electronics opens a unique path that leads beyond imitation could equip us with unfamiliar senses. Here we demonstrate giant magnetoresistive sensor foils high sensitivity, unmatched flexibility mechanical endurance. They are <2 μm thick, extremely flexible (bending radii <3 μm), lightweight (≈3...

Inorganic nanomembranes are shapeable (flexible, printable, and even stretchable) transferrable to virtually any substrate. These properties build the core concept for new technologies, which transform otherwise rigid high-speed devices into their counterparts. This research is motivated by eagerness of consumer electronics towards being thin, lightweight, flexible, wearable. The realization this requires all building blocks as we know them from (e.g., active elements, optoelectronics,...

We fabricated [Co/Cu] multilayers revealing a giant magnetoresistance (GMR) effect on free-standing elastic poly(dimethylsiloxane) (PDMS) membranes. The GMR performance of rigid silicon and PDMS is similar does not change with tensile deformations up to 4.5%. Mechanical imposed the sensor are totally reversible, due elasticity This remarkable upon stretching relies wrinkling layers top membrane.

Artificial electronic skins (e-skins) comprise an integrated matrix of flexible devices arranged on a soft, reconfigurable surface. These sensors must perceive physical interaction spaces between external objects and robots or humans. Among various types sensors, magnetic the configuration are preferable for such position sensing. However, sensor matrices efficiently map field with real-time encoding positions motions objects. This paper reports ultrathin system comprising 2 × 4 array...

The first highly stretchable and sensitive spin valve sensor on elastomeric membranes are demonstrated. elements exhibit stable GMR behavior up to tensile strains of 29% in situ stretching experiments show no fatigue over 500 loading cycles. This remarkable stretchability is achieved by a predetermined periodic fracture mechanism that creates meander-like pattern upon stretching.

A novel fabrication method for stretchable magnetoresistive sensors is introduced, which allows the transfer of a complex microsensor systems prepared on common rigid donor substrates to prestretched elastomeric membranes in single step. This direct printing boosts potential magnetoelectronics terms miniaturization and level complexity, provides strain-invariant up 30% tensile deformation.

A flexible diagnostic platform is realized and its performance demonstrated for early detection of avian influenza virus (AIV) subtype H1N1 DNA sequences. The key component the high‐performance biosensors based on high output currents low power dissipation Si nanowire field effect transistors (SiNW‐FETs) fabricated 100 μm thick polyimide foils. devices a polymeric support are about ten times lighter compared to their rigid counterparts wafers can be prepared large areas. While latter...

A highly flexible GMR-based microfluidic analytic device was demonstrated to analyze droplets of various dimensions and different concentrations magnetic contents.

We fabricate high-performance giant magnetoresistive (GMR) sensorics on Si wafers, which are subsequently thinned down to 100 μm or 50 realize mechanically flexible sensing elements. The performance of the GMR sensors upon bending is determined by thickness membrane. Thus, radii 15.5 mm and 6.8 achieved for devices supports, respectively. magnitude remains unchanged at level (15.3 ± 0.4)% independent support radius. However, a progressive broadening curve observed associated with...

We present a conceptually new approach for the detection of magnetic objects flowing through fluidic channel. produce an elastic and stretchable sensor wrap it around capillary tubing. Thus, stray fields induced by can be detected virtually in all directions (isotropic sensitivity), which is unique sensors when compared to their rigid planar counterparts.

A flexible bismuth-based Hall sensor is realized with a total thickness of only 80 μm including encapsulation. After wiring, the sensors have maximum height 280 and could be mounted onto curved surfaces radii down to 5 mm without degradation its performance. These allow one measure time-varying magnetic fields are applied realize flux-based control strategies for magnetically suspended systems, which demonstrated by means single-axis levitation setup.

We fabricated Permalloy ( Fe 19 Ni 81 ) nanomembranes rolled-up into compact three-dimensional architectures and experimentally investigated their magnetic magneto-electric responses. When a nanomembrane is rolled-up, an additional magnetostatic interaction between the multiple windings emerges. Such kind of interaction, unique to not accessible in any other architecture, addressed for first time this study. An important feature tubes with that inner outer are formed by single sheet; spin...

Abstract Till now application of printed magnetoelectronics is hindered by lack large area exchange coupled metallic multilayers required to produce printable magneto‐sensory inks. Large‐scale roll‐to‐roll (R2R) fabrication process an attractive approach owing its capabilities for high volume, throughput, and manufacturing. Precise performance R2R sputtering technology developed fabricate giant magnetoresistive (GMR) thin‐films stacks that contain 30 bilayers prepared continuous Co Cu...

Rigid magnetic field sensors such as anisotropic magnetoresistive (AMR), giant (GMR) and Hall have been used for years become industry standard electromagnetic non-destructive testing (NDT). Recent technological developments in the of flexible electronics allow fabrication reshapeable on substrates via thin-film deposition or printing. The properties these comparable characteristics to industry-standard rigid sensors, with added ability adapting surface complex components scanning contact...

A new approach for aligning wrinkles in thin viscoelastic polymethylmethacrylate films is established by sandwiching them between ferromagnetic layers. Experiments prove that a contribution from an engineered anisotropic 1D periodic magnetic stray field pattern can be decisive the alignment of otherwise randomly oriented at commensurate periods template and wrinkles. Alternatively, random wrinkling observed under similar conditions, but when fields are missing or not with wrinkle wavelength....

Stretchable magneto-resistive sensing elements have been introduced lately as a novel component providing magnetic functionality to stretchable consumer electronics involving smart skin or medical diagnostic applications. While spin valves already revealed high stretchability and reliability, GMR multilayers still lack mechanical compliance production yield. Here, we report on two crucial improvements in fabrication of address these limiting issues. On the one hand, increase wrinkled...

Ultrathin sensors enable various scopes for measuring signals in restricted geometries. One example is the use of magnetic field active bearings (AMBs). Here, thin sensor will allow flux directly air gap between rotor and stator AMB, which allows controlling AMB faster more precisely. This also results a higher stiffness AMB. Therefore, has to be thinner than 150 μm. In this article, previous experiences with polyimideand silicon-based Hall rely on bismuth films were used realize reliable...

Dielectric elastomer actuators (DEA) are a class of eletro-active polymers with promising properties for number applications, however, such prone to failure. One the leading failure mechanisms is electrical breakdown. It already well-known that electro-mechanical actuation DEA strongly influenced by mechanical and compliant electrodes. was recently suggested also breakdown in soft materials elastomer. Here, we present stress-strain measurements obtained on two tri-block thermoplastic...

We realized ultra-thin and flexible magnetic field sensors based on the Hall Effect in 2 μm thick Bismuth films prepared commercial double-layer polyimide PCB with a total thickness of 150 μm. These could be potentially applied active bearing (AMB) systems. Therefore, here we address reliability aspects emphasis proper choice adhesive to mount sensor stator AMB. The thermal shock tests standard automotive temperature range -40°C 165°C as well vibration test mounted has proven sensor's stability.

Three-dimensional nanomagnetism is a rapidly growing field of research covering both noncollinear spin textures and curved magnetic geometries including microtubular structures. We spatially resolve the field-induced magnetization reversal free-standing ferromagnetic microtubes utilizing multifrequency force microscopy (MFM). The are composed Co/Pd multilayer films with perpendicular anisotropy that translates to an radial easy axis upon rolling-up. Simultaneously mapping topography...