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Hikata T.,New Business Frontier R and D Laboratories | Okubo S.,New Business Frontier R and D Laboratories | Utsunomiya R.,Nissin Electric Co. | Higashi Y.,Nissin Electric Co. | Matsuba T.,Nissin Electric Co.
SEI Technical Review | Year: 2014

We developed a novel growth method for carbon nanofibers (CNFs), such as carbon nanotubes (CNTs), and multilayered graphene sheets, where the metal nanoparticle catalyst and template substrates were not used for growth of the CNFs. The CNFs were grown with the bridge formation between the cleaved crack walls through the carburizing heat treatment of the high purity iron oxide foils in an acetylene gas flow. We indicate a possibility that the bridging growth CNFs (BG-CNFs) are formed by division of an unknown novel iron phase including a large amount of carbon as a solid solution. We introduce the new fabrication process of BG-CNFs and possibility for the practical use. Source


Ishikawa H.,New Business Frontier R and D Laboratories | Takahashi T.,New Business Frontier R and D Laboratories | Mizuno F.,New Business Frontier R and D Laboratories | Suzuki T.,New Business Frontier R and D Laboratories | And 3 more authors.
SEI Technical Review | Year: 2013

We have developed the composition imaging system with a near infrared (NIR) spectrographic camera. This camera incorporates a sensitive sensor that can detect the distinctive absorption spectra reflected or absorbed by organic substances in the wide wavelength band of 1,000-2,350 nm. The camera can process hyper-spectral data of 320 x 256 pixels at the frame rate of 100-320 fps, and thus enables precise real-time imaging. The composition imaging system is expected to be used for the non-destructive inspection of food and pharmaceutical products for their quality control and evaluation. This paper outlines the NIR spectroscopic camera and presents actual examples of image processing. Source


Miyatake K.,New Business Frontier R and D Laboratories | Ueyama M.,New Business Frontier R and D Laboratories | Hahakura S.,New Business Frontier R and D Laboratories | Inoue H.,New Business Frontier R and D Laboratories | And 2 more authors.
SEI Technical Review | Year: 2014

Sumitomo Electric has developed the chemical-free and eco-friendly ballast water treatment system 'ECOMARINE UV' that utilizes filtration and UV disinfection. By using the unique high-efficiency filter unit, the ECOMARINE UV ensures the high organism removal efficiency and the lowest power consumption among UV technology-based systems worldwide. Through the element technology development and the verification tests with prototype system, the ballast water treatment system with treatment capacity of 200 m3/h was completed and installed on the cruise ship 'ASUKA II' managed by NYK CRUISES CO., LTD. The series of performance tests were successfully finished in January 2014 and the Type Approval was granted by the Japanese government in June 2014. The following is a report of development background, system features and test results of ECOMARINE UV. Source


Tanaka M.,New Business Frontier R and D Laboratories | Obi H.,New Business Frontier R and D Laboratories | Hirano M.,New Business Frontier R and D Laboratories | Murashima K.,New Business Frontier R and D Laboratories | And 2 more authors.
SEI Technical Review | Year: 2014

We have developed an optical coherence tomography system, Compovision-OCT (CV-OCT) that detects lipid for intravascular diagnosis. This system is developed by combining our proprietary Compovision technology, which visualizes the composition of the object using near-infrared light, and optical coherence tomography, which visualizes the cross-sectional tomographic image of the object using interference of light. The main feature of CV-OCT is that it utilizes the near-infrared light in the 1.7 μm wavelength band, which shows an absorption peak of lipid contained in coronary artery plaque. To achieve a performance needed in clinical applications, this system employs a broadband light source based on super-luminescent diodes and spectroscopic line camera. This results in an acquisition rate of 47 kHz per a line of cross-sectional image, and a sensitivity over 100 dB for detecting weak light reflected from the object. We also demonstrate lipid distribution imaging by CV-OCT using an artificial coronary artery plaque model, and confirm the accuracy for lipid detection is more than 90%, which would be sufficiently high for application to plaque diagnosis. This paper presents the feature, configuration, image processing, basic performance of the CV-OCT system and results of evaluation using coronary plaque model. Source

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