ORCID Profile
0000-0001-9503-8367
Current Organisations
Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden eV
,
Technische Universität Chemnitz
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Publisher: Springer Science and Business Media LLC
Date: 30-08-2013
DOI: 10.1038/SREP02548
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4LC00751D
Abstract: A highly flexible GMR-based microfluidic analytic device was demonstrated to analyze droplets of various dimensions and different concentrations of magnetic contents.
Publisher: Wiley
Date: 09-2016
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4LC01160K
Abstract: A magnetofluidic platform with integrated GMR sensors is demonstrated for on-demand facile generation and high-throughput real-time decoding of droplet barcodes.
Publisher: Wiley
Date: 05-10-2012
Abstract: The first highly stretchable and sensitive spin valve sensor on elastomeric membranes are demonstrated. The sensor elements exhibit stable GMR behavior up to tensile strains of 29% in in situ stretching experiments and show no fatigue over 500 loading cycles. This remarkable stretchability is achieved by a predetermined periodic fracture mechanism that creates a meander-like pattern upon stretching.
Publisher: Wiley
Date: 07-08-2018
Abstract: Boron, carbon, nitrogen, and oxygen atoms can form various building blocks for further construction of structurally well-defined 2D materials (2DMs). Both in theory and experiment, it has been documented that the electronic structures and optical properties of 2DMs are well tunable through a rational design of the material structure. Here, the recent progress on 2DMs that are composed of B, C, N, and O elements is introduced, including borophene, graphene, h-BN, g-C
Publisher: Springer Science and Business Media LLC
Date: 10-04-2015
Publisher: AIP Publishing
Date: 07-05-2007
DOI: 10.1063/1.2737425
Abstract: SiGe on insulator films of 10–50nm thickness are fabricated by Ge condensation applying different oxidation times. The layers are released from the substrate by selectively etching the insulator film. Due to the varying Ge composition, the layers bend downward toward the substrate surface and roll up into microtubes. Depending on the Ge condensation, the strain distribution in the SiGe layers varies and allows a scaling of the tube diameters between 1 and 4μm. Assuming pseudomorphic SiGe layers, the tube diameters are smaller than expected from continuum mechanical theory. This suggests the occurrence of additional strain in the oxidized films.
Publisher: Elsevier BV
Date: 10-2008
Publisher: Wiley
Date: 22-10-2014
Abstract: A lab-on-chip device is demonstrated for probing the electrochemical kinetics, electrical properties, and structure integrity of a single Si rolled-up tube as the anode in lithium-ion batteries. Cyclic voltammetry of the tube exhibits better-resolved peaks than of the planar film due to the enhanced diffusion. The tube is wrinkled after cycling. The tube could be used as a promising ultra-microelectrode for other voltammetry research.
Publisher: Springer Science and Business Media LLC
Date: 21-11-2012
Abstract: In this work, we present an experimental procedure to measure the composition distribution within inhomogeneous SiGe nanostructures. The method is based on the Raman spectra of the nanostructures, quantitatively analyzed through the knowledge of the scattering efficiency of SiGe as a function of composition and excitation wavelength. The accuracy of the method and its limitations are evidenced through the analysis of a multilayer and of self-assembled islands.
Publisher: Wiley
Date: 18-07-2016
Abstract: Information tagging and processing are vital in information-intensive applications, e.g., telecommunication and high-throughput drug screening. Magnetic suspension array technology may offer intrinsic advantages to screening applications by enabling high distinguishability, the ease of code generation, and the feasibility of fast code readout, though the practical applicability of magnetic suspension array technology remains h ered by the lack of quality administration of encoded microcarriers. Here, a logic-controlled microfluidic system enabling controlled synthesis of magnetic suspension arrays in multiphase flow networks is realized. The smart and compact system offers a practical solution for the quality administration and screening of encoded magnetic microcarriers and addresses the universal need of process control for synthesis in microfluidic networks, i.e., on-demand creation of droplet templates for high information capacity. The demonstration of magnetic suspension array technology enabled by magnetic in-flow cytometry opens the avenue toward point-of-care multiplexed bead-based assays, clinical diagnostics, and drug discovery.
Publisher: IEEE
Date: 05-2015
Publisher: Wiley
Date: 06-05-2015
Abstract: A flexible diagnostic platform is realized and its performance is demonstrated for early detection of avian influenza virus (AIV) subtype H1N1 DNA sequences. The key component of the platform is high-performance biosensors based on high output currents and low power dissipation Si nanowire field effect transistors (SiNW-FETs) fabricated on flexible 100 μm thick polyimide foils. The devices on a polymeric support are about ten times lighter compared to their rigid counterparts on Si wafers and can be prepared on large areas. While the latter potentially allows reducing the fabrication costs per device, the former makes them cost efficient for high-volume delivery to medical institutions in, e.g., developing countries. The flexible devices withstand bending down to a 7.5 mm radius and do not degrade in performance even after 1000 consecutive bending cycles. In addition to these remarkable mechanical properties, on the analytic side, the diagnostic platform allows fast detection of specific DNA sequences of AIV subtype H1N1 with a limit of detection of 40 × 10(-12) m within 30 min suggesting its suitability for early stage disease diagnosis.
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7LC00026J
Abstract: A review highlighting the historical basis, routes and roadmap of the development of magnetic biosensing platform technologies.
Publisher: Wiley
Date: 10-07-2017
Abstract: A novel realization of microtubular direct methanol fuel cells ( µ DMFC) with ultrahigh power output is reported by using “rolled‐up” nanotechnology. The microtube (Pt‐RuO 2 ‐RUMT) is prepared by rolling up Ru 2 O layers coated with magnetron‐sputtered Pt nanoparticles (cat‐NPs). The µ DMFC is fabricated by embedding the tube in a fluidic cell. The footprint of per tube is as small as 1.5 × 10 −4 cm 2 . A power density of ≈257 mW cm −2 is obtained, which is three orders of magnitude higher than the present microsized DFMCs. Atomic layer deposition technique is applied to alleviate the methanol crossover as well as improve stability of the tube, sustaining electrolyte flow for days. A laminar flow driven mechanism is proposed, and the kinetics of the fuel oxidation depends on a linear‐diffusion‐controlled process. The electrocatalytic performance on anode and cathode is studied by scanning both sides of the tube wall as an ex situ working electrode, respectively. This prototype µ DFMC is extremely interesting for integration with micro‐ and nanoelectronics systems.
Publisher: Springer Science and Business Media LLC
Date: 05-03-2015
DOI: 10.1038/SREP08787
Abstract: Topological magnetic states, such as chiral skyrmions, are of great scientific interest and show huge potential for novel spintronics applications, provided their topological charges can be fully controlled. So far skyrmionic textures have been observed in noncentrosymmetric crystalline materials with low symmetry and at low temperatures. We propose theoretically and demonstrate experimentally the design of spin textures with topological charge densities that can be tailored at ambient temperatures. Tuning the interlayer coupling in vertically stacked nanopatterned magnetic heterostructures, such as a model system of a Co/Pd multilayer coupled to Permalloy, the in-plane non-collinear spin texture of one layer can be imprinted into the out-of-plane magnetised material. We observe distinct spin textures, e.g. vortices, magnetic swirls with tunable opening angle, donut states and skyrmion core configurations. We show that applying a small magnetic field, a reliable switching between topologically distinct textures can be achieved at remanence.
Publisher: Wiley
Date: 14-01-2015
Publisher: MDPI AG
Date: 27-05-2015
DOI: 10.3390/S150612526
Location: United Kingdom of Great Britain and Northern Ireland
Location: Germany
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Oliver G Schmidt.