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New Stochastic Method for Sequence Recognition


06.03.2012
| Ref.Nr. 07042
Physics&Engineering


Figure: Example for the transformation of a time continual stochastic chain (upper line) in a time discrete stochastic left-right process (lower line) Source: TU Berlin, Kühn, Gühmann Technology

We offer a new stochastic method for sequence recognition, which is suitable for detection of for example speech, text or handwriting recognition. In tests it outperformed Hidden Markov Models (HMM’s) and other approaches significantly, which were state of the art for pattern recognition of sequences up till now.

The new sequence recognition method is nearly under and over fitting free. The training procedure doesn’t require an initial set of parameters or incremental optimization, so that the training can run fully automated. The method is able to do “word spotting” in very long sequences. Because of its unique nature it is very insensitive to non-linear distortion. The needed computing cost is low, thus the new method for sequence recognition can work in real time.

IP Rights
EP and US patent application with priority on July 2007

Patent Owner
Technische Universität Berlin

Application Area:
Voice recognition, Image recognition, Biometry data acquisition, Virus scanner
Development Stage: product
Jeanne Trommer's picture
Licensing Manager: Jeanne Trommer
T +49 30 2125 4831
F +49 30 2125 4822
Suitable Industry: Automotive, Software, Navigation Technology, Telecommunication, Internet Provider/Services
Benefits:
  • One step stochastic method for pattern recognition
  • High recognition rate, low error rate
  • Unsusceptible to non-linear distortion
  • Nearly under- and over-fitting free
  • Low consumption costs, works in real time
  • Extensions that were developed for HMM’s can be transferred (e.g. adaption methods, connected speech recognition)

Ultra-wet Gas Turbine


01.03.2012
| Ref.Nr. 09139
Physics&Engineering

Background
We offer a method to improve the passive scalar homogenization of mixing fluidic jets in cross flow configurations especially within the combustion chamber of a turbine. This is achieved by using fluidic oscillators that create an oscillating or pulsating fluid flow at the oscillator exit due to their way of construction. By this improved method high amounts of steam can be added to the combustion process and thus significantly increase the level of efficiency.

The oscillation frequency of the injected fuel is thereby regulated only by the mass feed of the supplied fluid.
The combination of cross flow injection and oscillation/pulsation of the fluid flow increases primarily the mixing ration of the two fluid flows within a combustion chamber (fluid & air) and moreover leads to a more effective burning.
The fluidic actuators can be installed within new (gas) turbines but can also be integrated in already existing ones.

IP Rights
PCT application filed

Patent Owner
Technische Universität Berlin
Application Area:
The proposed method can be used in all known application fields of (gas) turbines. The fluidics can be installed with new turbines but can also be integrated in already existing systems.
Development Stage: Lab level
Jeanne Trommer's picture
Licensing Manager: Jeanne Trommer
T +49 30 2125 4831
F +49 30 2125 4822
Benefits:
  • Better temporal homogenization: NOx reduction, improved fuel value
  • Pressure loss in turbine is reduced: enhancing performance rate
  • Decrease of mixing length by ca. 50%: turbines could be build smaller
  • Fluidic oscillators require less maintenance
  • Usage of nearly any gaseous fuels
  • Increased macro- and micromixing phenomena: higher gains in mixing quality

Handling Robot SAMARA


27.02.2012
| Ref.Nr. 05001
Physics&Engineering

Scheme of a the SAMARA robotBackground
The handling robot system SAMARA (System Applying Momentum transmission for Acceleration of an end-effector with Redundant Axis) combines the advantages of heavy payloads and wide working space from Scara robots with the high acceleration of Delta robots. This is achieved by a new motion sequence that is characterized by a steadily rotation of the first axis. Thus it is necessary to accelerate only small masses, as the main part of energy used for the motion cycle is kept for the following cycle.

By applying such a redundant axis the kinetic energy can be retained in the robot links during a picking process and returned to the effector for speeding up the whole robot additional to the drives torques. As the nullspace movement ends with a stretched second and third link, acceleration of the effector must be regarded as an impulse, leading to acceleration of 20g.
SAMARA allows solving “pick and place“ tasks even for heavy loads extremely fast, precise and energy-beneficial with only little space required for the SAMARA robot itself.

IP Rights
German Patent Application

Patent Owner
Technische Universität Berlin
Application Area:
Palletizing tasks in food packaging, handling and supplying activities in assembling, alternative to Scara and Delta robots.
Development Stage: prototype
Further Categories: Physics & Engineering
Jeanne Trommer's picture
Licensing Manager: Jeanne Trommer
T +49 30 2125 4831
F +49 30 2125 4822
Benefits:
  • Under actuated motion
  • Highly dynamic operation of multiple arms within same work space
  • Suitable for heavy payloads
  • Wide working space
  • High acceleration (up to 20g)
  • Only low space required
  • Flexible and very precise
  • Combination of various end-effectors possible
  • Continuous movement reduces energy loss caused by stopping and change of direction
     

Porous Metal Oxide Films


06.01.2012
| Ref.Nr. 09068
Physics&Engineering

SEM image of a macroporous network (Sokolov, Paul, Krähnert. 2009)Background
Thin porous metal oxide films offer unique physical, electrical and magnetic properties with applications in various fields including catalysis, gas sensing and separation, power storage and generation as well as biology and medicine. Currently known synthesis techniques for metal oxide films with templated porosity (e.g. dip-coating, spin-coating) show significant limitations when they are faced with large substrates and/or substrates with a micro-structured surface.

Technology
We offer an improved method for the production of porous metal oxide films on a substrate using template assisted electrostatic spray deposition (ESD). It overcomes all known problems of current technologies like dip- and spin coating.This novel method is able to produce unisized mesoporous and macroporous films by directly controlling the size and concentration of the pore forming organic templates in an initially formed precursor solution.


IP Rights

PCT Application with priority on October 2009

Patent Owner
Technische Universität Berlin, Germany

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Application Area:
Catalysis, Sensors (gas sensors), (Dye sensitized) solar cells, Templates, Displays
Development Stage: Product
Further Categories: Catalysis, Physics & Engineering
Jeanne Trommer's picture
Licensing Manager: Jeanne Trommer
T +49 30 2125 4831
F +49 30 2125 4822
Suitable Industry: Chemistry, Photovoltaic, Electronic, Optoelectronic
Benefits:

  • Hierarchically structured meso- and macroporous films
  • Control of pore morphology (volume, size, distribution, connectivity)
  • Pores can be coated with catalytic active material
  • Various substrates can be used
  • Coating of large substrates
  • Easy transfer to industrial applications
  • Production under room conditions

Highly Efficient Light Emitters - The Route to Green Lasers


25.08.2011
| Ref.Nr. 06094
Physics&Engineering
Background
The emission of green laser light is of great importance for several applications and procedures in biology, medicine and multimedia. A powerful green laser could revolutionize the market for portable beamers. So far, semiconductor based light emitters, such as laser pointers, convert infrared light by frequency doubling into green light. A significant drawback of this technique is the loss of power and efficiency.

Technology
We offer green light emitting semiconductor devices including for example a green laser. The use of ZnCdO as a semiconductor material allows direct emission of green light without frequency doubling.

IP Rights
German Patent Application

Patent Owner

Humboldt-Universität zu Berlin, Germany

Application Area:
Green lasers, Laser diodes
Development Stage: Demonstrator
Dr. Kirk Haselton's picture
Licensing Manager: Dr. Kirk Haselton
T +49 30 2125 4842
F +49 30 2125 4822
Benefits:
  • Direct Green light emission (band gap 2.2 eV - 2.5 eV)
  • No frequency doubling involved
  • No loss of efficiency
  • High degree of crystalline perfection
  • High stable semiconductor material
  • Small, low cost device

     

Terahertz Quantum Cascade Lasers


25.08.2011
| Ref.Nr. 09018
Physics&Engineering

Background
Quantum Cascade Lasers (QCLs) are currently the best electrically-pumped sources of Terahertz (THz) radiation regarding output power, linewidth, operating temperatures and efficiency. THz QCLs offer a wide field of applications ranging from astrophysics and security screening to ultrafast spectroscopy in chemistry or biology. For all these applications THz QCLs which can operate at moderate temperature are desired.

Technology
The invention offers a THz Quantum Cascade Laser with improved temperature performance. The THz QCL uses a strain-compensated (Al, Ga, In)As material grown on InP substrates.

IP Rights

PCT Application

Patent Owner
Humboldt-Universität zu Berlin, Germany
University of Texas, USA

Application Area:
Spectroscopy (Chemistry, Biochemistry, Astrophysics), Medical Imaging, Detectors, Sensors
Development Stage: Concept
Dr. Kirk Haselton's picture
Licensing Manager: Dr. Kirk Haselton
T +49 30 2125 4842
F +49 30 2125 4822
Suitable Industry: Security Industry, Chemical Industry, Medical Industry
Benefits:
  • Operating frequencies: 0.8 THz - 5 THz
  • Operating temperature: 240K minimum
  • Operating temperature can be achieved using thermoelectric coolers
  • Improved laser gain compared to common THz QCLs

     

Catalytic Nano-Pen for Cutting Graphene


25.08.2011
| Ref.Nr. 08133
Physics&Engineering

Scheme (left) and scanning tunneling microscope (STM) image of a graphene trench made by the catalytic nano-pen Background
Graphene, a monoatomic layer of graphite, is a promising candidate for future (nano)electronic applications. Currently however there are no techniques available for reproducibly cutting graphene with nanometer precision.

Technology
We provide a catalytic Nano-Pen for high speed trench channeling of mono- and multilayer graphene using silver nanoparticles in an ambient environment and at elevated temperatures. A silver nanoparticle located at a graphene edge catalyzes oxidation of neighboring carbon atoms, thereby burning a trench into the graphene layer.

IP Rights
German Patent DE102008053691B3
US Patent Application

Patent Owner
Humboldt-Universität zu Berlin, Germany

Application Area:
Transparent and flexible electrodes, Flexible Solar cells, Flexible displays, Transistors, Memories
Development Stage: Proof of Concept
Further Categories: Catalysis, Physics & Engineering
Dr. Kirk Haselton's picture
Licensing Manager: Dr. Kirk Haselton
T +49 30 2125 4842
F +49 30 2125 4822
Suitable Industry: (Nano)electronic, Optoelectronic, Consumer Electronic
Benefits:
  • high-precision lithography on graphene
  • cutting of smooth trenches (peak-to-peak roughness below 2 nm)
  • cutting speeds up to 250 nm/s
  • Environmentally friendly (gold or silver as catalytic material)
  • User friendly (transfer pattern directly from computer to graphene layer)
  • Economically priced (no need for complex high-vacuum installations as is required for electron beam lithography)

Quantum well structure


25.08.2011
| Ref.Nr. 03037
Physics&Engineering

Background
Quantum-well inter-subband devices, such as quantum-well infrared photo-detectors (QWIPs) and quantum cascade lasers (QCLs) are ideal for a variety of ground and space-based applications. Night vision, early warning systems, navigation, flight control systems, weather monitoring, security and surveillance are among the different applications based on QWIPs. QCLs are ideal candidates for the remote sensing of gases in the atmosphere.

Technology
The invention is a quantum well structure including a quantum well layer arranged between two barrier layers. The invention further refers to quantum well photodetectors and quantum cascade laser. 

IP Rights
German Patent DE 103 35 443 B4
US Patent US 7,893,425 B2
European Patent Application

Patent Owner
Humboldt-Universität zu Berlin, Germany

 

Application Area:
Mid-IR Spectroscopic applications, Quantum cascade laser, Quantum-well infrared photodetectors
Development Stage: Prototype
Dr. Kirk Haselton's picture
Licensing Manager: Dr. Kirk Haselton
T +49 30 2125 4842
F +49 30 2125 4822
Market Potential: Security industry, Environmental industry
Benefits:

  • Vertical detection or emission of photons
  • Improved coupling of light into or out of the device
  • High sheet densities
  • Precise control over the subband energies
  • No restrictions on the quantum-well thickness
  • Flexibility in structural design

Single or Entangled Photon Source


25.08.2011
| Ref.Nr. 05128
Physics&Engineering

Background
For high security quantum cryptography electrically triggered single or entangled photon sources are needed. In addition the mass market requires efficient, electrically driven, high-speed devices.

Technology
Common growth and processing techniques are used to fabricate single photon sources which either generate polarization entangled photon pairs or polarization controlled single photons. This offers the opportunity for quantum cryptography with single photons or entangled photon pairs. 

IP Rights
German Patent DE 102005057800 B4
European/ US/ Japanese Patent Application

Patent Owner

Technische Universität Berlin, Germany

Application Area:
Quantum cryptography
Development Stage: Lab Level
Dr. Kirk Haselton's picture
Licensing Manager: Dr. Kirk Haselton
T +49 30 2125 4842
F +49 30 2125 4822
Suitable Industry: Security Industry, Communication, Information Technology
Benefits:

  • Choice of electrically triggered entangled or single photon source
  • Thermo-electrical cooling
  • Mass production possible

Photon Pair source


25.08.2011
| Ref.Nr. 08112
Physics&Engineering

Figure showing a photon pair source (left) and the (111) substrate orientation (right) Background
For high security quantum cryptography electrically triggered single or entangled photon sources are needed. In addition the mass market requires efficient, electrically driven, high-speed devices. A single or entangled photon source allows to use common growth and processing techniques for fabrication.

Technology
We offer a method for producing a photon pair source, which generates entangled photon pairs. This method offers a minimization of the fine structure splitting in Quantum Dots (QDs) to nearly zero using (1,1,1)-orientated semiconductor substrates.

IP Rights
German Patent DE 102008036400 B3
European / Japanese/ Chinese/ Indian/ Korean Patent Application

Patent Owner
Technische Universität Berlin, Germany

Application Area:
Quantum cryptography
Development Stage: Concept
Dr. Kirk Haselton's picture
Licensing Manager: Dr. Kirk Haselton
T +49 30 2125 4842
F +49 30 2125 4822
Suitable Industry: Security Industry, Communication, Information Technology
Benefits:

  • Compact photon pair source
  • High repetition rate
  • Produces photons on-demand