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Technology Name
Briefcase
Scientist
1447
A cheap and effective solution for protecting RFID tags from power attacks. RFID tags are secure tags present in many applications (e.g. secure passports). They are poised to become the most far-reaching wireless technology since the cell phone, with worldwide revenues expected to reach $2.8 billion in...

A cheap and effective solution for protecting RFID tags from power attacks.

RFID tags are secure tags present in many applications (e.g. secure passports). They are poised to become the most far-reaching wireless technology since the cell phone, with worldwide revenues expected to reach $2.8 billion in 2009. RFID tags were believed to be immune to power analysis attacks since they have no direct connection to an external power supply. However, recent research has shown that they are vulnerable to such attacks, since it is possible to measure their power consumption without actually needing either tag or reader to be physically touched by the attacker. Furthermore, this attack may be carried out even if no data is being transmitted between the tag and the attacker, making the attack very hard to detect. The current invention overcomes these problems by a slight modification of the tag's electronic system, so that it will not be vulnerable to power analysis.

Applications


  • Improved security of RFID tags.

Advantages


  • Simple and cost-effective
  • The design involves changes only to the RF front-end of the tag, making it the quickest to roll-out


Technology's Essence


An RFID system consists of a high-powered reader communicating with a tag using a wireless medium. The reader generates a powerful electromagnetic field around itself and the tag responds to this field. In passive systems, placing a tag inside the reader's field also provides it with the power it needs to operate. According to the inventive concept, the power consumption of the computational element is detached from the power supply of the tag. Thus, the present invention can almost eliminate the power consumption information.

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  • Prof. Adi Shamir
1529
We present an efficient and robust broadband crystal optical conversion device. Various applications of laser optics require tunable laser sources. Currently, most frequency conversion devices rely on a single non-linear crystal, which is either temperature or angle tuned to enhance efficiency. This...

We present an efficient and robust broadband crystal optical conversion device. Various applications of laser optics require tunable laser sources. Currently, most frequency conversion devices rely on a single non-linear crystal, which is either temperature or angle tuned to enhance efficiency. This results only in a narrow efficient spectral band of conversion. Other techniques such as periodic quasi-phase matching result in improved efficiencies but still within a narrow predetermined band. Random quasi-phase matching results in improved bandwidth but in a significant reduction in efficiency. This new device enables ultra-broadband wavelength conversion while maintaining high efficiency.

Applications


  • Laser optics industry
  • Frequency convertor for broadband signals
  • Generation of ultrafast visible radiation
  • Pulse selection.

Advantages


  • 90% efficiency of conversion process.
  • Simple and compact
  • Insensitive to the deviations in alignment, no dependence of the angle incidence beam or of temperature
  • Frequency converter of both broadband signals and ultra-short pulses.

Technology's Essence


This device is based on a new method of adiabatic wavelength conversion. The device works whereby a strong narrow-band pump is introduced into the crystal along with a weaker pulse to be converted. This conversion is realized in a quasi-phase matched nonlinear crystal, where the period is tuned adiabatically from strong negative phase-mismatch to strong positive phase-mismatch (or vice versa). This results in the efficient transformation of the weaker pulse.

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  • Prof. Yaron Silberberg
1151
A method to significantly shorten acquisition times of high-quality MRI images. Multidimensional nuclear magnetic resonance (NMR) is used nowadays in many applications (e.g., discovery of new pharmaceutical drugs, characterization of new catalysts, and investigation of the structure and dynamics of...

A method to significantly shorten acquisition times of high-quality MRI images.

Multidimensional nuclear magnetic resonance (NMR) is used nowadays in many applications (e.g., discovery of new pharmaceutical drugs, characterization of new catalysts, and investigation of the structure and dynamics of proteins). One drawback of this technique is that, by contrast to one-dimensional spectroscpic methods, multidimensional NMR requires relatively long measurement times associated with hundreds or thousands of scans. This places certain kinds of rapidly-changing systems in Chemistry outside the scope of the technique. Long acquisition times also make this technique ill-suited for in vivo analyses and for clinical measurements in combination with magnetic resonance imaging (MRI). The current technology allows for the acquisition of multidimentional NMR scans using a single continuous scan, thereby shortening the time needed to acquire high-quality MRI images.

Applications


  • In vivo diagnostics

  • High-throughput proteomics/metabonomics

  • NMR of unstable chemical systems

  • Metabolic dynamics

  • High-resolution NMR in tabletop systems

  • Extensions to non-MR spectroscopies


Advantages


  • Can shorten the acquisition time of any multidimensional spectroscopy experiment by orders of magnitude
  • Compatible with the majority of multidimensional pulse sequences
  • Can be implemented using conventional NMR and MRI hardware

Technology's Essence


The outlined approach, called ultrafast multidimensional NMR, significantly expedites the analysis of the electromagnetic sounds produced, making it possible to acquire complete multidimensional NMR spectra within a fraction of a second. This technology “slices up” the molecular sample into numerous thin layers and then simultaneously performs all the measurements required on every one of these slices. The protocol then integrates these measurements according to their precise location, generating an image that amounts to a full multidimensional spectrum from the entire sample.

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  • Prof. Lucio Frydman
1266
Fast cross-sectioning using multiphoton microscope.  The conventionally used laser-scanning microscopy, confocal and multiphoton microscopy, although being capable of performing optical sectioning, requires a long image acquisition time, tens of milliseconds per section in current commercial systems,...

Fast cross-sectioning using multiphoton microscope.  The conventionally used laser-scanning microscopy, confocal and multiphoton microscopy, although being capable of performing optical sectioning, requires a long image acquisition time, tens of milliseconds per section in current commercial systems, due to the scanning process. The field of confocal microscopy relies on the idea of point-by-point illumination of a sample and use mechanical scanning in order to collect an image. Multiphoton microscopes offer a different mechanism for optical sectioning and the need for rejecting out-of-focus scattering is practically eliminated. However, the process is efficient only when the peak intensity of the illuminating light is high. Thus there is a growing need to facilitate the multiphoton microscopy imaging of a sample by providing a novel illumination configuration and method of its operation.

Depth-resolved microscopy has been, for decades, practically synonymous with laser-scanning microscopy. The technique of the present invention provides for full-frame depth-resolved microscopy (or material processing), using an extremely simple setup as well as standard components, aiming at eliminating mechanical scanning across the sample thus making the image acquisition much faster.

 

Applications


  • Optical system for use in a multi-photon microscope.
  • Material processing, e.g. simultaneous depth-resolved modification of a transparent substrate by femtosecond radiation.

Advantages


  • The present invention provides for fast imaging/processing of a sample without scanning.
  • The temporal profile of the pulse remains unchanged as it propagates through the sample.
  • Single-shot depth resolved microscopy is able to capture extremely rapid dynamics, up to the nanosecond regime.
  • The setup enables full-frame video-rate fluorescence lifetime imaging, simply by gating the CCD intensifier.
  • Enables utilization of structure illumination microscopy.
  • Can be used with practically any multiphoton process.

Technology's Essence


The present invention provides the ability for illuminating a region of a sample with dimensions many orders of magnitude larger than a diffraction-limited spot of the imaging lens arrangement used in the microscope. Using this method, full-frame depth-resolved microscopy can be achieved using an extremely simple setup and standard components. the proposed microscope utilizes a pulse manipulator arrangement including a temporal pulse manipulator configured to define a surface, which extends perpendicular to the optical axis of a microscope in the front focal plane of an imaging lens arrangement, and which is patterned to affect trajectories of light components of the input short pulse impinging onto different points of this surface to direct these light components along different optical paths.

This novel invention is not limited to imaging techniques in general and to microscopy in particular and can also be used for material processing.

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  • Prof. Yaron Silberberg
1481
In recent years, there has been a growing interest in the development of nanoscale magnetic and thermal characterization tools in order to address rapidly evolving fields, such as nanomagnetism, spintronics and energy-efficient computing. The requirements from these tools include high sensitivity and...

In recent years, there has been a growing interest in the development of nanoscale magnetic and thermal characterization tools in order to address rapidly evolving fields, such as nanomagnetism, spintronics and energy-efficient computing. The requirements from these tools include high sensitivity and high spatial resolution to enable local detection and accurate measurements of extremely low signals. For example, the energy dissipation mechanism in quantum systems is related to preservation of quantum information, which is of particular importance in the field of quantum computing. Available local magnetic imaging methods suffer from low sensitivity and in some cases, low spatial resolution. On the other hand, energy dissipation is not a readily measurable quantity on the nanometer scale and existing thermal imaging methods are not sensitive enough for studying quantum systems and are unsuitable for low temperature operation.

A novel sensor device comprising a nanoscale superconducting quantum interference device (SQUID) was developed by Prof. Zeldov at the Weizmann Institute of Science. The fabrication method enables the miniaturization of the sensor to an effective diameter of below 50 nm and its integration onto the apex of a very sharp tip that is ideally suited for scanning probe microscopy. The extremely small size of the SQUID-on-tip sensor and the ability to approach very close to the sample surface result in nano-metric spatial resolution and a very sensitivity.

Applications


·         Scanning probe microscopy for magnetic and thermal characterization

·         Inspection and probing equipment for quantum computing


Advantages


  • Simple fabrication process

  • High field sensitivity and bandwidth

  • Nanoscale sensors (down to 46 nm in diameter)

  • Tip-sample distance can be as close as a few nanometers


Technology's Essence


A SQUID is a very sensitive magnetometer used to measure extremely subtle magnetic fields, based on superconducting loops. The present invention is a novel sensor device, based on a nanoscale two-junction or multi-junction SQUIDs fabricated on the edge of a sharp tip in a three dimensional geometric configuration. In such a setup, the SQUID can approach the sample to a distance of few nanometers, as opposed to the conventional planar SQUIDs, which results in an extremely high sensitivity.

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  • Prof. Eli Zeldov
1431
A method to monitor the amount of milk consumed by the baby during breastfeeding.Breastfeeding has been shown to have important health advantages for both baby and mother. A few months of exclusive breastfeeding has been shown to reduce the risk of infant gastro-intestinal problems, respiratory,...

A method to monitor the amount of milk consumed by the baby during breastfeeding.

Breastfeeding has been shown to have important health advantages for both baby and mother. A few months of exclusive breastfeeding has been shown to reduce the risk of infant gastro-intestinal problems, respiratory, urinary tract and ear infections. Furthermore, adults who were breastfed at infancy have a lower propensity for obesity, high cholesterol levels and high blood pressure – all risk factors for heart disease. Despite these advantages less than 50% continue breastfeeding beyond 4 weeks. The most common reason given for not breastfeeding or breastfeeding less than three months is ‘not enough milk’. The perception that milk production is insufficient however is subjective. At present, the only method to monitor the amount of milk a baby eats is by weighing the baby before and after feeding. The current technology can monitor amount and quality of milk during breastfeeding.

Applications


Monitoring of the amount of milk given while breastfeeding

Advantages


·        This method allows measuring both milk quantity and quality

  • Encourage infant breastfeeding.
  • Measurement of capacitance with no electrical contact between the electrodes and the body

Technology's Essence


The outlined technology consists of monitoring the amount of milk consumed by a baby during breastfeeding by measuring the capacitance between electrodes placed on the breast (but not in electrical contact with them) during feeding. It is sensitive to the amount, dielectric properties and distribution of matter in the immediate neighborhood of the capacitor plates. When placed on the breasts the capacitance is affected by the amount and properties of materials between plates, including milk content and constitution. Thus, if the amount of milk in the breast is reduced during breastfeeding the capacitance changes accordingly.

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  • Ph.D. Ruti Kapon

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