Abstract: A apparatus and method for estimating a germination ability of a seed comprises a terahertz signal source for emitting a terahertz signal towards the seed, a detector for detecting at least part of the terahertz signal having interacted with the seed, a scanner for moving the support relative to the terahertz signal to provide a scan of the seed, a data processing device for forming an image data from the detected terahertz signal as obtained for a plurality of positions during the scan of the seed, and a decision support system for providing an estimate of the germination ability from the image data. In an embodiment, the terahertz signal source is arranged for emitting a continuous or pulse wave signal, and wherein the detector is arranged for detecting an amplitude and a phase of the terahertz signal having interacted with the seed. A signal representing an outcome of the estimation may control a separator to separate seeds according to their estimated germination ability.
Type:
Application
Filed:
August 5, 2013
Publication date:
June 23, 2016
Applicant:
STICHTING SRON NETHERLANDS INSTITUTE FOR SPACE RESEARCH
Inventors:
Andrei Mikhailovitch BARYCHEV, Alena Vladimirovna BELITSKAYA, Andrey Vyacheslavovich KHUDCHENKO, Antonius Henricus Maria Catharina BALTISSEN
Abstract: The present invention relates to a method for non-destructive, contact or non-contact inspection of composite assemblies using radiation having a frequency in the terahertz range (10 GHz-10 THz) of the spectrum, whereby said method is implemented as an embodiment of the system for non-destructive, contact or non-contact inspection of composite assemblies using terahertz radiation, that is also claimed under the present invention. Said method enables the forming of a two or three-dimensional image of the material structure of an assembly of composite materials, from which image detection and analysis of material conditions of the composite materials forming said composite assemblies is possible, irrespective of the way that the composite materials forming said composite assemblies were joined together, and without the need for a priori knowledge about the structural characteristics, shape or configuration of said composite materials (for instance layered, foam, placed on metal substrate).
Type:
Application
Filed:
August 8, 2013
Publication date:
February 12, 2015
Applicant:
Stichting SRON - Netherlands Institute for Space Research
Inventors:
Andrei M. Barychev, Alena V. Belitskaya, Herman H. Van der Linden, Willem Jellema
Abstract: A manufacturing method for a grating is disclosed for the angular dispersion of light impinging the grating. The grating comprises tapered structures and cavities. A cavity width and/or corrugation amplitude is varied for achieving a desired grating efficiency according to calculation. A method is disclosed for conveniently creating gratings with variable cavity width and/or corrugation amplitude. The method comprises the step of anisotropically etching a groove pattern into a grating master. Optionally a replica is produced that is complementary to the grating master. By variation of an etching resist pattern, the cavity width of the grating may be varied allowing the optimization towards different efficiency goals.
Type:
Application
Filed:
June 7, 2012
Publication date:
February 5, 2015
Applicants:
Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO, Stichting SRON Netherlands Institute for Space Research
Inventors:
Henri Johannes Petrus Vink, Huibert Visser, Aaldert Hide Van Amerongen