TeraView Establishes Asian Presence

Press Release:

With a growing list of customers in Asia, TeraView has taken the step of establishing an initial base in the region. The first office is located in Seoul, and is intended to enhance the service, technical support and applications-specific expertise which TeraView offers its customers and commercial partners in the region.

The new office will be managed by Mr Bong Cho, who joined TeraView in 2012 after many years of experience working for companies active in the semiconductor inspection and non-destructive testing industries.

“These are exciting times at TeraView and there is significant untapped potential within the Asian market,” said Mr Cho. “We now have machines across Asia and increasingly with industrial partners. We need to ensure that we continue to provide these customers and partners with the best possible support. This office shows our commitment to our existing customers and commercial partners in Korea, and also to the wider region”.

Don Arnone, CEO TeraView said “Asia is increasingly important to TeraView, and we need to strongly support and expand our business in the region. We now have offices in North America, Europe and Asia, and continue to expand our customers support in all regions. “

About TeraView 

TeraView is the world’s first company devoted to the application of Terahertz light for spectroscopy and imaging. A spin out from Toshiba and Cambridge University in 2001 and employing circa 25 staff, TeraView has been developing its products across a number of applications and now has systems in over 20 countries. Headquartered in Cambridge, sales and support are available throughout Europe, North America and the Far East either directly or through a network of distributors. For more information on TeraView, visit www.teraview.com. 

Design and Experiment of a 220/420-GHz Gyrotron for Nondestructive Evaluation

Guan, X. ; Chen, C. ; Li, X. ; Yuan, X. ; Yan, Y. ; Fu, W. 

Abstract

We report the design and experiment of a 220/420-GHz gyrotron oscillator for nondestructive evaluation which operates at the fundamental near 220 GHz and the second harmonic near 420 GHz of the electron cyclotron resonance frequency. Through optimizing electron gun for both operation modes, the TE₂₆ mode at 423.1 GHz and the TE₀₃ mode at 221 GHz are observed at output powers up to 8 and 6 kW, respectively, by only changing the beam voltage at a magnetic field of 8.2 T. The experimental results are in reasonable agreement with the design and simulation. In addition, the measurements of potential operation modes with peak output power are also presented in this paper.

This study was performed using TeraView's TPS spectra 3000 system. (TeraView, Cambridge, UK)

Full Article: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=6819820&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D6819820

Terahertz radiation NDE of composite materials for wind turbine applications

Je-Woong Park, Kwang-Hee Im, In-Young Yang, Sun-Kyu Kim, Sung-Jun Kang, Young-Tae Cho, Jong-An Jung, David Kuei Hsu

Abstract

Nondestructive testing technique using T-ray (terahertz ray) has received more interest as a new capability tool in engineering application. So, T-ray time-domain spectroscopy was used for inspecting and evaluating physical property and defect characteristics in FRP composite materials for a use of wind energy. First of all, a general refraction mode and transmission mode was utilized for calculating a refractive index (n) based on the well-machined sample. In order to obtain the terahertz ray refractive index, a refractive mode and a transmission mode technique was defined for solving a refractive coefficient (n), with which refractive index of GFRP composites, balsa and epoxy for a use of wind turbine blades could be obtained. A method of wind turbine blade composites having one and two saw-cuts delaminations and some angles/directions was suggested based on the E-field vector. The time of flight in T-ray using evaluating a T-ray transmission mode agreed with that using T-ray time-domain spectroscopy with the wind turbine blade. Also, in CFRP composites, T-ray propagation is limited because the carbon fibers are blocking the T-ray. Therefore, we have analyzed difference between E-field vector in T-ray and the carbon fiber direction. Also, it was found that a T-ray time domain data in thick GFRP composite laminates seemed to show peaks with a regular spacing (Δt) which was obvious with the close relation between TOF and FFT.

This study was performed using TeraView's TPS spectra 3000 system. (TeraView, Cambridge, UK)

Full Article: http://link.springer.com/article/10.1007/s12541-014-0464-0

Detection of Melamine in Foods Using Terahertz Time-Domain Spectroscopy

Seung Hyun Baek, Heung Bin Lim, and Hyang Sook Chun

Abstract

The aim of this study was to investigate the feasibility of detecting melamine in foodstuffs using terahertz imaging. The terahertz (THz) spectra and images of melamine mixtures were obtained in the frequency range of 0.1–3 THz at room temperature using THz time-domain spectroscopy. Characteristic absorption peaks of melamine were found at 2, 2.26, and 2.6 THz, and these peaks showed the same frequencies in the different food matrices. At 2 THz, the THz images of melamine were dose-dependently distinguishable from those of food components with or without the packaging materials used. The calibration curve of melamine showed a regression coefficient (R2) of >0.913 and a detection limit of <13%. These results suggest that terahertz imaging has the potential to be used for the qualitative detection of melamine in food as a nondestructive analytical tool.

This study was performed using TeraView's TPS spectra 3000 system. (TeraView, Cambridge, UK)

Full Article: http://pubs.acs.org/doi/abs/10.1021/jf501170z

Terahertz and Raman spectra of non-centrosymmetrical organic molecular crystals

Monika Trzebiatowska-Gusowska, Edward F. Plinski, Jan Baran, Michal J. Walczakowski, Przemyslaw P. Jarzab, Kacper Nowak, Boguslaw Fuglewicz, Martin Mikulics, Norbert Palka, Mieczyslaw Szustakowski

Abstract

The terahertz waves have been applied to the spectroscopy of molecular crystals. The group based on hybrid organic–inorganic crystals like triglycine zinc chloride, triglycine sulphate, triglycine selenate, diglycine hydrobromide, diglycine hydrochloride, diglycine lithium nitrate, glycine lithium nitrate has been considered. The dispersion relation phonon–polariton have been shown between 10 cm−1 and 80 cm−1 for diglycine lithium nitrate, triglycine zinc chloride, and diglycine hydrobromide.

This study was performed using TeraView's TPS spectra 3000 system. (TeraView, Cambridge, UK)

Full Article: http://www.sciencedirect.com/science/article/pii/S0925346714001992