Wednesday, 29 January 2014

Teraview at The American Coatings CONFERENCE 2014

TeraView are please to announce that they will be attending the American Coatings CONFERENCE on April the 7-9, 2014 in the Georgia World Congress Centre.

TeraView's Rob May and Ian Grundy will be in attendance, with Rob May presenting the following talk:

Title: Non-Contact, Substrate-Independent, Multi-Layer Paint Thickness Sensor

Session: 3.3

Date: 7th of April 2014

Time: 3:00-3:30 pm

Room: C208-210

Tuesday, 28 January 2014

IRMMW-THz 2014 registration and abstract submission

The organizers of the 39th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2014), would like to let you know that the web site for both registration and abstract submission is now open.

Join us in  Tucson, AZ, USA, between September 14th and 19 for this year's conference.

Abstracts are due by April 1, and early registration is now available.

Please visit: for full details.

Tuesday, 21 January 2014

Determination of carrier concentration dependent electron effective mass and scattering time of n-ZnO thin film by terahertz time domain spectroscopy

J. Tang1,2, L. Y. Deng1, C. B. Tay1,2, X. H. Zhang3, J. W. Chai3, H. Qin4, H. W. Liu5, T. Venkatesan2 and S. J. Chua1,2,3,a)


We demonstrated a novel and widely accessible method for determining the electron effective mass and scattering time of ZnO films with different carrier concentrations by combiningterahertz time-domain spectroscopy with Hall measurement. The terahertz time domain spectroscopy (THz-TDS) transmission spectra (0.1–2THz) were well described by Drude model. It is found that electron effective mass varied from 0.23to 0.26as the electron concentration changes from 5.9 × 1017 cm−3 to 4.0 × 1019 cm−3. The carrier concentrationdependent characteristic is ascribed to the non-parabolicity of conduction band. Free carrier localization mechanism explained the discrepancy in mobilities obtained from THz-TDS and Hall measurements.

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

Full Article:

Thursday, 16 January 2014

Spoof Plasmon Surfaces A Novel Platform for THz Sensing

Binghao Ng , Jianfeng Wu , Stephen M. Hanham , Antonio I. Fernández-Domínguez ,
Norbert Klein , Yun Fook Liew , Mark B. H. Breese , Minghui Hong , and Stefan A. Maier*

Spoof plasmon surfaces consisting of linear arrays of subwavelength grooves are proposed as a novel platform for THz sensing. The tightly confined spoof plasmons, coupled via an Otto prism setup, are sensitive to the refractive index of the dielectric filling the grooves. Phase jumps at spoof plasmon resonances are used as a readout response for refractive index sensing. An overall sensitivity of 0.49 THz RIU−1 with figures-of-merit as high as 49 are achieved.

Measurements performed using TeraView's TPS Spectra 3000 system. (TeraView, Cambridge, UK)

Friday, 10 January 2014

Terahertz electrodynamics and superconducting energy gap of NbTiN

Taeyoon Hong1Kyujin Choi1Kyung Ik Sim1Taewoo Ha1Byung Cheol Park1,Hirotake Yamamori2 and Jae Hoon Kim1,a)


Terahertz electrodynamics of superconducting NbTiN has been studied in the spectral range of 8-70 cm–1 above and below the critical temperature of  = 14.1 K. Our transmission terahertz time-domain spectroscopy technique allows for independent and accurate determination of both the real part σ and the imaginary part σ of the optical conductivity σ as a function of frequency ω and temperature  without a Kramers-Kronig analysis. A clear signature of the superconducting energy gap Δ() is observed in the real part σ of the optical conductivity below, with 2Δ(0) = 36.5 cm−1 corresponding to 2Δ(0)/ = 3.72. No indication of strong-coupling effects was observed in the imaginary part σ toward zero frequency. Our results, including the temperature dependence of the penetration depth λ(), are in excellent quantitative agreement with weak coupling BCS theory and Mattis-Bardeen formula.

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