Sensors, Devices and Components

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A graphene diode with bias-induced barrier modulation

Ref.-No.: 1201-5155-BC-JK

Sensors, Devices and Components

Metal-insulator-metal (MIM) diodes are very promising for application as rectennas for solar energy harvesting, photo-detectors and high frequency mixers. Good MIM diode performance requires a high asymmetry, a strong nonlinearity, a large responsively, as well as a low resistance or a high on-current. These figures of merit are mainly determined by the work function difference of the electrodes, and the barrier height between the insulator and the electrode materials. In the design of MIM diodes, ...

A method and device for reversibly attaching a phase changing metal to an object

Ref.-Nr.: 0104-5132-BC

Sensors, Devices and Components

Reversible adhesion can be used to transfer or to manipulate objects. Especially if the objects are small and/or fragile their manipulation become very challenging. Intermolecular forces such as Van-der-Waals can be used to achieve a strong adhesion between the objects. Moreover, surface functionalization and the creation of nano- and microstructures can be used to improve these adhesion properties. Unfortunately, the adhesion becomes insufficient if the surfaces are wet or rough. Another problems ...

Accurate contactless measurement of surface and micro sample temperatures

Ref.-Nr.: 0041-5601-WT

Sensors, Devices and Components

The study of mechanical properties of materials at high temperatures at the microstructural length scale requires dedicated testing setups. An accurate measurement of the sample temperature is vital for reliable testing. Most of the successful current testing platforms record the temperatures of the sample and tip near the heating sources but not at the respective surface. As a consequence, due to spatial and temporal thermal gradients a reliable surface temperature cannot be measured today. Even ...

Advanced collector sweeping with homogenous power deposition of the electron beam in high-power rf vacuum-tubes

Ref.-No.: 1801-3749-WT

Sensors, Devices and Components

This invention includes two alternative advanced methods to achieve a homogenous collector power distribution, which improves the collector capability of high power vacuum-tubes by a factor of two as compared to conventional methods. Furthermore the applied method has a high flexibility to vary the power distribution over a wide range of profiles and match the deposition profiles to different designs of collectors in existing or future electron tubes.

Advanced magnetic zipper for industrial and consumer applications

Ref.-Nr.: 0705-4974-BC

Sensors, Devices and Components

Conventional mechanical zippers find manifold applications for luggage, clothing or even industrial applications. However, their design features significant disadvantages. In particular, they require the use of both hands by the user to align the ends of the garment and lock the insertion pin into the slider. This mechanism can be prone to jamming and failure and more generally requires the user to free his or her hands. The user must further use one or both hands to move the slider along the ...

Advanced vorticity measurements on complex flows

Ref.-Nr.: 0705-4770-BC

Sensors, Devices and Components

The dynamics of complex flows and turbulences are dominated by vortices of many different scales. In general, the vortex describes the group motion of fluid elements in a circular fashion, whereas the vorticity quantizes this spinning moment of a fluid element confined to a small neighborhood.

For diagnosis of flows, conventional techniques track the movements of small particles added into the flow (e.g., Lagrangian particle tracking, LPT, and particle image velocimetry, PIV). However, ...

Apparatus and method for creating a holographic ultrasound field in an object

Ref.-Nr.: 0104-5066-BC

Sensors, Devices and Components

Ultrasound is being used in many fields ranging from medical imaging and therapy to non-destructive testing, contact-free particle handling or spatially selective heating in industrial settings. Often, those applications require shaping (including focusing) of an ultrasonic field. Compared to existing transducers with fixed lenses or phased array transducers (PATs) the present invention allows much more sophisticated sound fields to be generated using much simpler and cheaper technology.

Closure Device for Evaporator Cell of a Coating System

Ref.-Nr.: 1201-5136-BC

Sensors, Devices and Components

Evaporation cells for thin film deposition often operate under ultrahigh vacuum or special gas atmosphere, requiring long growth campaigns and short maintenance openings to preserve the best possible vacuum environment. The deposition leads to coating of the inner chamber walls, the removal of which is difficult and very time consuming. Growth control and interruptions during material deposition may require frequent operation of the closure device or shutter. The commonly used shutter (Fig. 1) ...

Compact high-voltage vacuum feedthrough

Ref.-Nr.: 0302-4988-WT

Sensors, Devices and Components

Applying high voltages in vacuum applications requires feedthroughs, which electrically insulate the conductor from the vacuum chamber whilst being vacuum-tight. In high- and ultrahigh vacuum environments, the materials used need to be low in outgassing rates. The current technology for feedthroughs withstanding tens to hundreds of kilovolts relies on vacuum-tight ceramic to metal connections, which are heavy, fragile and prone to contamination. Commercially available feedthroughs are stand-alone ...

eeFILM – Extended Excitation for Faster Measurement of Fluorescent Lifetimes

Ref.-No.: 0707-5026-BC

Sensors, Devices and Components

The estimation of excitation lifetimes based on fluorescence or phosphorescence emission is an essential technique in basic and applied science. It provides information on molecular interactions
as well as on physical properties. Measuring the emission lifetime with spatial resolution provides an imaging modality, which in case of fluorescence is called Fluorescence Lifetime Imaging (FLIM). FLIM is applied extensively in biological imaging in order to determine the conformation, activation, ...

Efficient cooling of commercially available electrical wiring by the use of metals with low melting temperatures

Ref.-No.: 1801-4852-WT

Sensors, Devices and Components

Resistance induced heating of electrical wiring during operation is one of the limiting factors to design high-power electromagnetic coils. The commonly used approach to eliminate the heating of electrical wires is to introduce a hollow conductive copper wire into electrical wiring and to cool this wire with water. Unfortunately, this approach is not applicable for high power density electromagnetic coil as well as for coils with small dimensions. Another approach to enhance the cooling properties ...

Enhancement resonator including non-spherical mirrors

Ref.-No.: 1202-4590-WT

Sensors, Devices and Components

An Enhancement Cavity (EC) with at least one toroidal and/or cylindrical mirror is described. This allows for an arbitrary beam ellipticity of the eigenmode. In particular at a stability edge, where the ellipticity diverges with purely spherical optics, a round beam can be obtained.

Flash 2 – Real-Time Magnetic Resonance Imaging (MRI)

Ref.-Nr.: 0707-4198-BC

Imaging and Microscopy
Sensors, Devices and Components

Magnetic resonance imaging (MRI) is nowadays a leading mo¬dality for diagnostic imaging with about 100 million examinations per year worldwide. However, when invented by Paul Christian Lauterbur in 1973, MRI was too slow to allow for routine medical applications. A breakthrough was achieved in 1985 by the FLASH (Fast Low Angle Shot) technique developed by Jens Frahm and his team at the Max-Planck-Institute for Biophysical Chemistry in Göttingen, Germany. With FLASH the measuring time for a cross-sectional ...

High efficiency hydrodynamic collimation vacuum interface for atmospheric pressure ion sources

Ref.-No.: 1201-4433-BC

Sensors, Devices and Components

In mass spectroscopy, many ion sources that transform the specimen to be tested into gas phase ions operate at ambient or elevated pressure. The generated ions have to be transferred into vacuum for further characterization, for instance in a mass analyzer.
The ion transfer into vacuum represents a major bottleneck. Because the pumping power increases rapidly with the size of an opening, long capillaries or small pinholes have to be used. Their transmission is commonly as low as 1%, in optimal ...

Hybrid Thin-Disk Amplifier

Ref.-No.: 1202-4510-WT

Sensors, Devices and Components

Ultrafast amplifier systems providing high average powers (>10W) at repetition rates in the kHz regime suffer from severe accumulation of nonlinear phase inside the laser gain medium and other optical components within the amplifier. Implementation of chirped pulse amplification (CPA) constitutes a well-established method to reduce the peak intensity of the laser pulse during the amplification process [1, 2]. However, state of the art laser materials supporting high average output powers such ...

Laser device with kerr effect based mode-locking and operation thereof

Ref.-Nr.: 1202-4422-WT

Sensors, Devices and Components

A laser device (100), configured for generating laser pulses, has a laser resonator (10) with a gain disk medium (11) and a Kerr medium (12). The laser resonator (10) includes a first mode shaping section (13) which is adapted for shaping a circulating electric field coupled into the gain disk medium (11), and a second mode shaping section (14), which is adapted for shaping the circulating electric field coupled into the Kerr medium (12) independently of the electric field shaping in the first ...

Method and apparatus for optical frequency comb generation using a monolithic micro-resonator

Ref.-No.: 1202-3760-WT

Sensors, Devices and Components

The invention relates to a monolithic optical frequency comb generator. Furthermore, the invention relates to a method of generating an optical frequency comb.

Method and radiation source for generating pulsed coherent radiation

Ref.-No.: 1302-3482-WT

Sensors, Devices and Components

The present invention relates to a method of generating pulsed coherent radiation in the UV and XUV wavelength ranges. Furthermore, the present invention relates to a radiation source for generating pulsed coherent radiation based on a high harmonic generation (HHG).

Modular low light level sensors: a scalable approach

Ref.-No.: 0206-5874-BC

Sensors, Devices and Components : Sensors

A scalable and easy to handle method for the creation of larger (up to square meters) low light level detectors is disclosed. While the fast read-out times of a single detector is kept, the area covered by the detector ensemble (dramatically) increases. The large area is enabled by transversal connection of hybrid “base cells”. These “base cells” consist of vertically stacked tiers of (i) a detector array, (ii) a first level electronic read-out, and (iii) and a second level read-out which ...

Multichannel coil for UHF MRI

Ref.-No.: 0107-4677-BC

Imaging and Microscopy
Sensors, Devices and Components

Exploiting the benefits offered by magnetic resonance imaging (MRI) at ultra-high fields (≥ 7 Tesla) requires optimized radiofrequency (RF) coils. MRI at UHF operates in a regime where the RF wavelength is comparable to the dimensions of the sample size, resulting in an inhomogeneous distribution of the transmit field (B1+) and in an impaired image quality. An array of independent transmit coils arranged in multiple rows provides the degrees of freedom to influence the ...

Multifunctional RFID-based Platform for Animal Observation and Manipulation

Ref.-No.: 0214-5247-MG und 0214-5440-MG

IT / Software / Bioinformatics : (other) Software
Sensors, Devices and Components : Sensors
Sensors, Devices and Components : Devices
Sensors, Devices and Components : Components

≠¡]} Julius Kramer

An efficient system to monitor and control animal behavior in wildlife as well as in laboratory settings

Optimization of Multi-Channel Coil for Magnetic Resonance Imaging

Ref.-No.: 1302-4127-BC

Sensors, Devices and Components

Magnetic resonance imaging (MRI) requires optimal radio-frequency (RF) coil performance that ensures the highest RF magnetic field per unit power delivered to the coil, while maintaining the highest achievable RF field homogeneity. For MRI at high magnetic field level, it is important to use a multi-channel transmit coil for producing the desired RF field. However, it is impossible to design a multi-channel coil without considerable coupling between its coil elements. The major challenge in multi-channel ...

Parallel-imaging time-of-flight momentum microscope

Ref.-No.: 1401-4572-WT

Imaging and Microscopy
Sensors, Devices and Components : Devices

The state of an electron is completely defined by its momentum and spin. In processes like electron diffraction or photoemission electron ensembles are generated which have a characteristic 3D distribution of momentum and spin. To examine such events the three components of the momentum vector have to be measured. Up to now, the momentum distribution of an ensemble of charged particles was typically measured using energy-dispersive spectrometers based on sequential approaches (sequentially changing ...

Reducing phase singularities in speckle interferometry

Ref.-No.: 1629-5142-WT

Sensors, Devices and Components : Devices

Speckle interferometry is an established metrology technique for the characterization of rough objects. Deformations of rough objects under a load can be determined, as well as – with the help of an additional second wavelength – the surface shape of the object under test. As an illustration, Figure 1 (left) shows the so called raw phase as a result of a deformation measurement on a metal plate. The shape and the density of the fringes indicate the response of the metal plate to the load.
Owing ...

Scalable coupling part machined from one workpiece

Ref.-No.: 0704-5610-BC

Sensors, Devices and Components : Components

The invention describes an easy and cheap to produce, compact coupling part, manufactured out of one workpiece. This part, scalable for shaft diameters as low as 1 mm upwards, enables a quick and secure, backlash-free one- or two-sided engagement of shafts without the need for working space or additional tools (like a screwdriver). If requested, torque limited coupling (in one or both rotation directions) is possible. The production methods comprise a variety of materials and manufacturing processes. ...

Sensor for the Carrier-envelope Phase of Short Laser Pulses: A Measuring Device and a Laser Control Device

Ref.-No.: 1202-4253-WT

Sensors, Devices and Components

We present a sensor for the carrier-envelope phase of a few-cycle femtosecond laser. The sensor uses the electron current emitted from a nanoscale metal tip onto which we focus high-repetition-rate laser pulses.

Possible applications of this sensor are in the field of the technique of controlling and using pulse lasers, in particular used for measuring or high-power irradiation purposes.

The size of such a simple stand-alone sensor device for the carrier-envelope phase could be in ...

Soft Capsule Endoscope - "B-MASCE"

Ref.-No.: 0104-5410-BC

Sensors, Devices and Components

Im Zuge der stetigen Weiterentwicklung und Nachfrage auf dem Gebiet der minimal invasiven Chirugie wurde am Max-Planck-Institut für intelligente Systeme in Stuttgart im Team von Herrn Prof Sitti für patientenfreundliche Magen-Darm-Untersuchungen ein kabelloses kapselförmiges Endoskop in Pillengröße, das sogenannte "B-MASCE" entwickelt. Die aus einem Elastomer bestehende Kapsel dient hierbei sowohl als Gehäuse als auch als Federelement für die Nadel. Über in der Kapsel eingebaute Magnete ...

Uniform Deposition of Large-Area Multicomponent Coatings using Laser Irradiation Scanning of Predesigned Targets

Ref.-No.: 1201-4172-BC

Sensors, Devices and Components

Pulsed laser deposition (PLD) facilitates efficient production of thin films using a laser ablation technique. Targets are selected according to the coating desired. Multiple targets are either moved mechanically to the incidence area, or they are fixed so that the laser beam is alternatively focused on each of them. Multiple targets are, however, known to cause discontinuities, whereas single multicomponent target usually doesn’t ensure compositional homogeneity. The technology presented here ...

Water content sensor for biological soil crusts

Ref.-No.: 0901-4720-WT

Sensors, Devices and Components

In arid and semiarid regions biological soil crusts (BSC) cover about 1/3 of the soil surface. As far as it is known, these BSC (consisting of cyanobacteria, algae, fungi, bryophytes, and other bacteria living in contact with soil particles) are crucial for the global terrestrial carbon and nitrogen cycle. The water status plays a major role, since their water content directly controls the activity of these poikilohydric organisms.