Max-planck-gesellschaft Zur F&#xf6;rderung Der Wissenschaften E. V.

Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Peer Fischer

Tian Qiu

Kai Melde

Qiu Tian

Tung Chun Lee

Peter-Karl Weber

Hyeon-Ho Jeong

Ambarish Ghosh

Andrew Mark

A magnetic field generator that comprises at least three groups of magnets, the magnetic moment of each magnet being rotatable about a rotation axis, wherein each group comprises at least two magnets, and each group has an orientation in the sense that the rotation axes of the magnetic moments of the magnets of the same group extend in the group's orientation. The orientations of the different groups are linearly independent.

Magnetic field generator

A method where a propeller is set into locomotion relative to a medium at least partially surrounding the propeller. An actuator induces a rotation of the propeller relative to the medium and about a rotational axis of the propeller, and the propeller converts its rotational movement into locomotion relative to the medium. The aspect ratio of at least one cross-section of the propeller is three or more. Also a helical or modifiedly helical propeller for converting rotational movement of the propeller into locomotion of the propeller relative to a medium at least partially surrounding the propeller, where the aspect ratio of at least one cross section of the propeller is three or more. And a method of producing a propeller, including the step of providing a plate extending along the helical axis, where the aspect ratio of at least one cross section of the plate is three or more.

Propeller and method in which a propeller is set into motion

A method of fabricating a component () comprises the steps of providing precursor material in a working medium, creating acoustic forces and positioning the precursor material in the working medium under the effect of the acoustic forces, so that a material distribution is formed, which has a shape of the component to be fabricated, and subjecting at least one of the material distribution and the working medium to a fixation, so that the precursor material of the material distribution or the working medium surrounding the material distribution is bound, wherein the step of creating the acoustic forces includes generating an acoustic interference pattern (), and the material distribution () is formed by moving the precursor material () towards energy extrema of the acoustic interference pattern (). Furthermore, an apparatus () for fabricating a component () is described.

Additive manufacturing method and apparatus for fabricating a component using acoustic forces to position precursor material

An ultrasonic apparatus () for creating a holographic ultrasound field () comprises an ultrasound source device () being adapted for creating an ultrasound wave, and a transmission hologram device () having a transmission hologram () and an exposed acoustic emitter surface (), said transmission hologram device () being acoustically coupled with the ultrasound source device () and being arranged for transmitting the ultrasound wave through the acoustic emitter surface () and creating the holographic ultrasound field in a surrounding space, wherein the acoustic emitter surface () is a smooth surface which do not influence the field distribution of the ultrasound wave. Furthermore, a method of creating a holographic ultrasound field in an object (), wherein the ultrasonic apparatus () is used, and applications of the ultrasonic apparatus () are described.

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

The present invention relates to a method of producing a phantom resembling a human or animal organ or tissue, the phantom comprising at least one first region having at least one tissue like property and at least one cavity having a plurality of hollow branches connected thereto, with at least some of the plurality of hollow branches being formed such that they project into the first region having tissue like properties. The invention further relates to a method of making the first structure and to a corresponding phantom.

Method of producing a phantom and phantom

The present invention relates to a method for encapsulating a nanostructure, the method comprising the steps of:

Method for encapsulating a nanostructure, coated nanostructure and use of a coated nanostructure

Ultrasonic actuator device () includes actuator arm arrangement () including first and second actuator sections (), wherein the first section is arranged for coupling with support structure () and the second section is movable relative to the first section, and ultrasonic driver device () including at least one ultrasonic driver unit (-) coupled with at least one of first and second sections for driving actuator arm arrangement () and for providing movement of the second section relative to the first section, and wherein actuator arm arrangement () is movable with at least two degrees of freedom and the at least one ultrasonic driver unit includes an array of oscillating elements being arranged for creating an acoustic stream in an adjacent medium in response to application of ultrasound. Furthermore, an operational instrument including at least one ultrasonic actuator device () and a method of using the device are described.

Ultrasonic actuator device and applications thereof

Methods and systems for the fabrication and application of Magnetically Actuated Propellers (MAPs) are described. MAPs are structures with typical feature sizes in the range of 20 nanometers up to 100 microns in one spatial dimension. MAPs are propellers that can be obtained from nano-structured surfaces and that can be produced in large numbers. MAPs are propelled and controlled by magnetic fields. The MAPs are optimized for low Reynolds number propulsion and can be moved in fluids and biological tissues. MAPs are useful for measurements, quantification, imaging and sensing purposes e.g. detecting biomolecules and for the controlled transportation of (drug- and bio-) molecules and the delivery of microscopic and nanoscale objects and/or materials or systems of therapeutic value. The MAPs are formed on a substrate and the released from the substrate using sonication, vibration, agitation, dissolution or etching which allows the MAPs to be produced in large numbers.

Growing community of inventors

Freiburg, Germany

Peer Fischer