Grant: Research Tools and Instruments - Category 1 (<$150,000)

Recent results achieved by the PI in obtaining strong localization and high field enhancement using THz resonant dipole nanoantennas point toward the possible application of such structures for a novel class of THz devices. Similarly to what has been already reported in the visible spectral region, we propose to exploit the unique properties of these antennas for the realization of nanoplasmonic-assisted THz biosensors and nonlinear devices. Thanks to the outstanding performances of these new tools, anticipated by preliminary numerical simulations, the applicant foresees a large impact on the research community as well as a rapid and widespread diffusion in more applicative sectors. For these reasons, the PI has recently established a vigorous research program directed toward the investigation of enhanced THz radiation-matter interactions, well suited within his recognized expertise in THz science. In this regard, the experiments that are necessary to carry out the proposed research are featured by several technical challenges that require an urgent equipment upgrade. Thanks to the already established THz facility at INRS-EMT, the largest part of the equipment requirements is already fulfilled. However, due to the specific nature of the proposed investigation, a new instrument is needed, namely a Terahertz Fourier Transform Interferometer. This spectrometer is able to acquire spectra over a very broad frequency range, with resolutions and sensitivities that are far beyond the ones offered by the systems available in the Institute. If purchased, it will improve the detection limit of biomolecules on the nanoplasmonic substrates, as well as allow for a better signal-to-noise ratio in THz nonlinear harmonic detection. The requested piece of equipment will complement our laboratories, eventually increasing the PI's, INRS-EMT and Canada's influence on THz research and applications development. Finally, the expected benefits related to the proposed research program are not only paving the way to the development of novel advanced technologies but will also promote the training of highly qualified personnel in a top level research environment.