Stephan Schröder
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View article: Tailoring the optical properties of holey Si thin films
Tailoring the optical properties of holey Si thin films Open
Si thin films with holes are composite materials with interesting optical properties that can be fabricated and modified by state-of-the-art Si process technologies. Adjusting the volumetric air fraction of these films allows control over …
View article: An Artificial Neural Network to Eliminate the Detrimental Spectral Shift on Mid-Infrared Gas Spectroscopy
An Artificial Neural Network to Eliminate the Detrimental Spectral Shift on Mid-Infrared Gas Spectroscopy Open
We demonstrate the successful implementation of an artificial neural network (ANN) to eliminate detrimental spectral shifts imposed in the measurement of laser absorption spectrometers (LASs). Since LASs rely on the analysis of the spectra…
View article: 3D Printing by Two‐Photon Polymerization of Polyimide Objects and Demonstration of a 3D‐printed Micro‐Hotplate
3D Printing by Two‐Photon Polymerization of Polyimide Objects and Demonstration of a 3D‐printed Micro‐Hotplate Open
Polyimides are polymeric materials with outstanding thermal, chemical, and mechanical properties. For this reason, they find applications in several engineering sectors, including aerospace, microsystems, and biomedical applications. For r…
View article: Water storage variations in a forest during a sequence of dry years: integrative monitoring with a superconducting gravimeter
Water storage variations in a forest during a sequence of dry years: integrative monitoring with a superconducting gravimeter Open
Terrestrial gravimetry allows for integrative measurements of mass changes associated with water storage variations in all storage compartments above and below the Earth surface. Superconducting gravimeters (SGs) currently are the most pre…
View article: Modified screening method of middle american dry bean genotypes reveals new genomic regions on Pv10 associated with anthracnose resistance
Modified screening method of middle american dry bean genotypes reveals new genomic regions on Pv10 associated with anthracnose resistance Open
Anthracnose, caused by the fungal pathogen Colletotrichum lindemuthianum (Sacc. & Magnus) Lams.-Scrib., is one of the most devastating diseases in dry bean ( Phaseolus vulgaris L.) with seed yield losses up to 100%. Most anthracnose re…
View article: Compact Non-Dispersive Infrared Multi-Gas Sensing Platform for Large Scale Deployment with Sub-ppm Resolution
Compact Non-Dispersive Infrared Multi-Gas Sensing Platform for Large Scale Deployment with Sub-ppm Resolution Open
We report on a novel, cost-effective non-dispersive infrared (NDIR) multi-gas sensor aimed at environmental air pollution monitoring. The rugged design of the K96 sensor core combines highest compactness and low-power consumption with our …
View article: Graphene waveguide-integrated thermal infrared emitter
Graphene waveguide-integrated thermal infrared emitter Open
Low-cost and easily integrable mid-infrared (MIR) sources are highly desired for photonic integrated circuits. Thermal incandescent MIR sources are widely used. They work by Joule heating, i.e. an electrical current through the emitter cau…
View article: Repeated vertical relative gravity measurements in a well shaft for monitoring water storage changes in the vadose zone
Repeated vertical relative gravity measurements in a well shaft for monitoring water storage changes in the vadose zone Open
<p>The vadose zone plays a key-role for a comprehensive understanding of hydrological states and processes at the interfaces of atmosphere, soil, vegetation and groundwater. Yet it is the most difficult hydrological compartment to ob…
View article: New genomic regions associated with white mold resistance in dry bean using a MAGIC population
New genomic regions associated with white mold resistance in dry bean using a MAGIC population Open
Dry bean ( Phaseolus vulgaris L.) production in many regions is threatened by white mold (WM) [ Sclerotinia sclerotiorum (Lib.) de Bary]. Seed yield losses can be up to 100% under conditions favorable for the pathogen. The low heritability…
View article: A large-area single-filament infrared emitter and its application in a spectroscopic ethanol gas sensing system
A large-area single-filament infrared emitter and its application in a spectroscopic ethanol gas sensing system Open
Nondispersive infrared (NDIR) spectroscopy is an important technology for highly accurate and maintenance-free sensing of gases, such as ethanol and carbon dioxide. However, NDIR spectroscopy systems are currently too expensive, e.g., for …
View article: Ménandre, Tome III. Le Laboureur – La Double Tromperie – Le Poignard – L’Eunuque – L’Inspirée – Thrasyléon – Le Carthaginois – Le Cithariste – Le Flatteur – Les Femmes qui boivent la ciguë – La Leucadienne – Le Haï – La Périnthienne. Texte établi et traduit par Alain Blanchard.
Ménandre, Tome III. Le Laboureur – La Double Tromperie – Le Poignard – L’Eunuque – L’Inspirée – Thrasyléon – Le Carthaginois – Le Cithariste – Le Flatteur – Les Femmes qui boivent la ciguë – La Leucadienne – Le Haï – La Périnthienne. Texte établi et traduit par Alain Blanchard. Open
eBook: Ménandre, Tome III. Le Laboureur – La Double Tromperie – Le Poignard – L’Eunuque – L’Inspirée – Thrasyléon – Le Carthaginois – Le Cithariste – Le Flatteur – Les Femmes qui boivent la ciguë – La Leucadienne – Le Haï – La Périnthienne…
View article: The gPhone-solar-cube: an energy self-sufficient mobile container for monitoring gravity and climate parameters at remote field sites
The gPhone-solar-cube: an energy self-sufficient mobile container for monitoring gravity and climate parameters at remote field sites Open
Throughout the last years, there is an increasing interest of the geoscientific community in using terrestrial gravimetry as an integrative and non-invasive method for observing mass change and mass redistribution in the environment due ge…
View article: Manufacture and characterization of graphene membranes with suspended silicon proof masses for MEMS and NEMS applications
Manufacture and characterization of graphene membranes with suspended silicon proof masses for MEMS and NEMS applications Open
View article: Microcontrollers beyond Arduino: a stationary and a mobile environmental monitoring system
Microcontrollers beyond Arduino: a stationary and a mobile environmental monitoring system Open
<p>In the course of the Helmholtz MOSES initiative two monitoring systems are being developed which consist of the same key components and thus functionality but with very different scopes of application. One is a stationary data log…
View article: Description of Constituent Characteristics of Agile Development Processes for Technical Systems
Description of Constituent Characteristics of Agile Development Processes for Technical Systems Open
View article: Design Options for the Integration of Suppliers in Agile Development Projects
Design Options for the Integration of Suppliers in Agile Development Projects Open
View article: Transfer printing of nanomaterials and microstructures using a wire bonder
Transfer printing of nanomaterials and microstructures using a wire bonder Open
Scalable and cost-efficient transfer of nanomaterials and microstructures from their original fabrication substrate to a new host substrate is a key challenge for realizing heterogeneously integrated functional systems, such as sensors, ph…
View article: Hydrometeorological and gravity signals at the Argentine-German Geodetic Observatory (AGGO) in La Plata
Hydrometeorological and gravity signals at the Argentine-German Geodetic Observatory (AGGO) in La Plata Open
The Argentine-German Geodetic Observatory (AGGO) is one of the very few sites in the Southern Hemisphere equipped with comprehensive cutting-edge geodetic instrumentation. The employed observation techniques are used for a wide range of ge…
View article: Suspended Graphene Membranes with Attached Silicon Proof Masses as Piezoresistive Nanoelectromechanical Systems Accelerometers
Suspended Graphene Membranes with Attached Silicon Proof Masses as Piezoresistive Nanoelectromechanical Systems Accelerometers Open
Graphene is an atomically thin material that features unique electrical and mechanical properties, which makes it an extremely promising material for future nanoelectromechanical systems (NEMS). Recently, basic NEMS accelerometer functiona…
View article: Graphene ribbons with suspended masses as transducers in ultra-small nanoelectromechanical accelerometers
Graphene ribbons with suspended masses as transducers in ultra-small nanoelectromechanical accelerometers Open
View article: Hydrometerological and gravity signals at the Argentine-German Geodetic Observatory (AGGO) in La Plata
Hydrometerological and gravity signals at the Argentine-German Geodetic Observatory (AGGO) in La Plata Open
The Argentine-German Geodetic Observatory (AGGO) is one of the very few sites in the southern hemisphere equipped with a comprehensive cutting-edge geodetic instrumentation. The employed observation techniques are used for a wide range of …
View article: Hydrometerological and gravity data from the Argentine-German Geodetic Observatory in La Plata
Hydrometerological and gravity data from the Argentine-German Geodetic Observatory in La Plata Open
The data set contains hydrological, meteorological and gravity time series collected at Argentine-German Geodetic Observatory (AGGO) in La Plata, Argentina. The hydrological series include soil moisture, temperature, electric conductivity,…
View article: UGbS-Flex, a novel bioinformatics pipeline for imputation-free SNP discovery in polyploids without a reference genome: finger millet as a case study
UGbS-Flex, a novel bioinformatics pipeline for imputation-free SNP discovery in polyploids without a reference genome: finger millet as a case study Open
The paper combines GBS protocol modifications, a novel flexible GBS analysis pipeline, UGbS-Flex, recommendations to maximize SNP identification, updated genetic mapping software, and the first high-density maps of finger millet. The modul…
View article: A 500 °C Active Down-Conversion Mixer in Silicon Carbide Bipolar Technology
A 500 °C Active Down-Conversion Mixer in Silicon Carbide Bipolar Technology Open
This letter presents an active down-conversion mixer for high-temperature communication receivers. The mixer is based on an in-house developed 4H-SiC BJT and down-converts a narrow-band RF input signal centered around 59 MHz to an intermed…
View article: An Intermediate Frequency Amplifier for High-Temperature Applications
An Intermediate Frequency Amplifier for High-Temperature Applications Open
This paper presents a two-stage small signal intermediate frequency amplifier for high-temperature communication systems. The proposed amplifier is implemented using in-house silicon carbide bipolar technology. Measurements show that the p…
View article: Contactless Surgery Light Control based on 3D Gesture Recognition
Contactless Surgery Light Control based on 3D Gesture Recognition Open
Surgery lighting systems (SLS) aim to provide optimal lighting conditions for the surgeon in an operating room. To visually differentiate between only marginally different looking tissues, SLS offer settings for the level of illumination, …
View article: Additional file 3: of UGbS-Flex, a novel bioinformatics pipeline for imputation-free SNP discovery in polyploids without a reference genome: finger millet as a case study
Additional file 3: of UGbS-Flex, a novel bioinformatics pipeline for imputation-free SNP discovery in polyploids without a reference genome: finger millet as a case study Open
Table S1A. Summary statistics obtained for each of the three enzyme combinations for subsets of reads; Entries are grouped by read number. Table S1B. Summary statistics obtained for each of the three enzyme combinations for subsets of read…
View article: Additional file 8: of UGbS-Flex, a novel bioinformatics pipeline for imputation-free SNP discovery in polyploids without a reference genome: finger millet as a case study
Additional file 8: of UGbS-Flex, a novel bioinformatics pipeline for imputation-free SNP discovery in polyploids without a reference genome: finger millet as a case study Open
Table S5. Genotypic data for the MD-20 x Okhale-1 population. (XLSX 2444 kb)
View article: Towards Unconventional Applications of Wire Bonding
Towards Unconventional Applications of Wire Bonding Open
This thesis presents novel heterogeneous integration approaches of wire materials to fabricated and package MEMS devices by exploring unconventional applications of wire bonding technology. Wire bonding, traditionally endemic in the realm …
View article: Genetic Architecture of Flooding Tolerance in the Dry Bean Middle-American Diversity Panel
Genetic Architecture of Flooding Tolerance in the Dry Bean Middle-American Diversity Panel Open
Flooding is a devastating abiotic stress that endangers crop production in the twenty-first century. Because of the severe susceptibility of common bean (Phaseolus vulgaris L.) to flooding, an understanding of the genetic architectu…