Eduardo Sergio Oliveros Mata

Helmholtz-Zentrum Dresden-Rossendorf | HZDR · Institute of Ion Beam Physics and Materials Research

Printed electronics are attractive due to their low-cost and large-area processing features, which have been successfully extended to magnetoresistive sensors and devices. Here, we introduce and characterize a new kind of magnetoresistive paste based on the anisotropic magnetoresistive (AMR) effect. The paste is a composite of 100-nm-thick permallo...

Origami utilizes orchestrated transformation of soft 2D structures into complex 3D architectures, mimicking shapes and functions found in nature. In contrast to origami in nature, synthetic origami lacks the ability to monitor the environment and correspondingly adjust its behavior. Here, magnetic origami actuators with capabilities to sense their...

Highly compliant electronics, naturally conforming to human skin, represent a paradigm shift in the interplay with the surroundings. Solution-processable printing technologies are yet to be developed to comply with requirements to mechanical conformability of on-skin appliances. Here, it is demonstrated that high-performance spintronic elements can...

The ability of acoustically propelled micro and nanoscale motors to perform diverse tasks while moving in solutions can open up new applications in diverse fields such as medicine, biotechnology, and materials science. However, the current understanding of the underlying propulsion mechanisms of ultrasound‐driven structures is limited for translati...

We realize an ultra-compact nanocytometer for real-time impedimetric detection and classification of subpopulations of living cells. Nanoscopic nanowires in a microfluidic channel act as nanocapacitors and measure in real time the change of the amplitude and phase of the output voltage and, thus, the electrical properties of living cells. We perfor...

Detection of antigens and antibodies (Abs) is of great importance in determining the infection and immunity status of the population, as they are key parameters guiding the handling of pandemics. Current point-of-care (POC) devices are a convenient option for rapid screening; however, their sensitivity requires further improvement. We present an in...

Crystalline coordination polymers with high electrical conductivities and charge carrier mobilities might open new opportunities for electronic devices. However, current solvent-based synthesis methods hinder compatibility with microfabrication standards. Here, we describe a solvent-free chemical vapor deposition method to prepare high-quality film...

We employ alternating magnetic fields (AMF) to drive magnetic fillers actively and guide the formation and self-healing of percolation networks. Relying on AMF, we fabricate printable magnetoresistive sensors revealing an enhancement in sensitivity and figure of merit of more than one and two orders of magnitude relative to previous reports. These...

Printed Magnetic Field Sensors In article number 2200227, Mykola Vinnichenk, Denys Makarov, and co‐workers present dispenser printing of magnetic field sensors based on bismuth powder. Benefiting from the non‐saturating large magnetoresistance effect, this technology enables scalable large‐area printing of sensors with broad detection range on flex...

Printed magnetic field sensors enable a new generation of human‐machine interfaces and contactless switches for resource‐efficient printed interactive electronics. As printed magnetoresistors rely on scarce or hard to manufacture magnetosensitive powders, their scalability and demonstration of printing with industry‐grade technologies are the key m...

In article number 2008751, Joseph B. Tracy, Denys Makarov, and co-workers fabricate ultrathin and reconfigurable magnetic origami actuators equipped with highly compliant magnetic field sensors allowing detection of their magnetization state and control over complex assembly tasks. This functionality is of major importance to assure a proper fault-...

Artificial magnetoception is a new and yet to be explored path for humans to interact with the surroundings. This technology is enabled by thin film magnetic field sensors embedded in a soft and flexible format to constitute magnetosensitive electronic skins (e‐skins). Being limited by the sensitivity to in‐plane magnetic fields, magnetosensitive e...

In article number 2101089, Gaspare Varvaro, Denys Makarov, and co‐workers present skin‐compliant touchless interactive devices based on spin‐valves with out‐of‐plane sensitivity to magnetic fields and with tunable logic characteristics. This technology will pave the way towards magnetoreceptive human‐machine interfaces or virtual‐ and augmented rea...

Impedance cytometry represents a technique that allows the electronic characterization of colloids and living cells in a highly miniaturized way. In contrast with impedance spectroscopy, the measurements are performed at a fixed frequency, providing real-time monitoring of the species traveling over the sensor. By measuring the electrical propertie...

In article number 2005521, Denys Makarov and co‐workers demonstrate skin‐compliant, stretchable, and printable giant magnetoresistive sensors that can operate in low magnetic fields of 1 mT under extreme mechanical deformations of bending radii of up to 16 μm and 100% stretching. They highlight the application potential of these devices in augmente...

Asymmetrically sandwiched thin magnetic layers with perpendicular anisotropy and Dzyaloshinskii-Moriya interaction (DMI) is the prospective material science platform for spin-orbitronic technologies that rely on the motion of chiral magnetic textures, like skyrmions or chiral domain walls (DWs). The dynamic performance of a DW-based racetrack is de...