17/18 January 2007 Wiener Neustadt - Czelo

circulate around structures with closed loops. The ability to detect small regions of nonmagnetic conducting
materials, and distinguish them from ferromagnets, superconductors, and paramagnets at the microscopic level,
gives the magnetic flux microscope broad capabilities in materials analysis. For such testing to be of practical
use, it will be necessary to develop systems which allow the microscopic magnetic imaging of room temperature
samples.
INNOVATIVE ASPECTS:
An eddy-current magnetic microscope is advanced to produce microwave images of the conducting materials and
tissues with a spacial resolution in a nanometer scale.
A new design for scanning or sounding micro- or nanoscopes that combines a simple mechanical arrangement
with a miniature pickup coil (PC) that connected to the drain-source channel of a superconducting field-effect
transistor (SuFET). The SuFET is used as a an ammeter which converts drain currents into gate voltages The
SuFET generates power at extremely high frequencies (UHF). Because UHF current flows around the PC(s), it
produces a time varying magnetic fields in the envelope of the PC(s) which can serve as a local probing field. The
magnetic coupling of PC to an external circuit carrying UHF current in a material or tissue proceeds through a
mutual inductance between PC and this circuit. As a result, the decreasing of the SuFET channels current is
defined by the value of losses for eddy currents in the material or tissue.
The product work under an ambient temperature (room or body) of PC and cryogenic installation for a SuFET
device.
The applications of the product is NDE and micro-nanomicroscopy of the conducting materials, medical
diagnostics of the organs and tissues.
MAIN ADVANTADGES / BENEFITS:
The innovative aspects in relation to existing products are using of SuFET device and ambient temperature of an
input probe.
The advantages of the technology in comparison to products that are already on the market are a high spatial
resolution and complete penetration into the measuring process. On the other hand, the design of a
superconducting magnetometer allows application of a room-temperature PC of the arbitrary dimensions. Other
than the SuFET itself, there are no other microwave components, sources, or detectors. This is particular
advantageous at very high frequencies where components are difficult to construct.
The advantages for the partner are the possibility of cooperative patenting and leading position in a nanoscope
area.
TECHNICAL SPECIFICATIONS: The sensitivity of this instrument for PC with the diameter of 0.1 micro(m) and
inductance 1 microH is equal to 10exp(-4) (A∙m/rootHz). This means that with an exciting signal ~1
(A∙m) a magnetic SNR in a band less than 10 Hz will be ~10 thousands. Typically our magnetic images
can be taken at about 8 pixels/s.
CURRENT STAGE OF DEVELOPMEN Development Phase
INTELLECTUAL PROPERTY RIGHTS (IPR):
• Copyright
• Know How
MARKET APPLICATIONS: NDE systems for industry and biomedical systems research and diagnostics.
TYPE OF COLLABORATION SOUGH Licence agreement, Joint research project, Joint-venture agreement,
Commercial agreement
PARTNER PROFILE: Type of partner sought is R&D laboratory in a company or university.
• Partner Qualification Criteria- an experienced staff in superconducting electronics and eddy current NDE or
microscopy;
• Tasks to be Performed by Partner- Implementation of the innovation in a laboratory and improving the design
in theory
• Support Provided by my Organisation- investigation of the sensing properties of a new magnetometer.
2. Profile: RTD: A Magnetic Nanoscope
Abstract. Application of organic, chemical and carbon nanotubes (CNTs) based field effect transistors (FETs) for
design of the superconducting transducer of the electronic and biosignals (BSs) into different quantities (electrical
and biochemical) is the subject of an offer. The placement of the devices can be carried out both in vivo and in
vitro with the possibilility of forming the controlling BSs from the said quantities.
DESCRIPTION:
Electrical current may be measured by measuring the related magnetic field by means of the Hall effect or the
Faraday effect into optoelectronic devices. The measurand as well as the reference value are often converted
into quantities of either the same or different physical nature before they are actually compared with each other.
Proceeding from the previously mentioned difficulties, including superconducting element of the
sensor/transducer into an electric current could be the solution to the problem. Electronic or ionic currents in
conductors or axons respectively, passing through the superconducting field-effect transistor’s (SuFET’s) channel
induce the output voltage on its gate. The implantable microelectrodes for neural applications are based on thin-