Time domain terahertz spectroscopy: development of analytical methods, signal processing techniques, biochemical and fundamental studies

• Grant number: 11/13777-8
• Support Opportunities: Research Projects - Thematic Grants
• Duration: January 01, 2012 - December 31, 2016
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Principal Investigator: Celio Pasquini
• Grantee: Celio Pasquini
• Host Institution: Instituto de Química (IQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Pesquisadores principais: Ivo Milton Raimundo Junior ; Jarbas José Rodrigues Rohwedder
• Associated researchers: Ana Rita de Araujo Nogueira ; Gilberto Batista de Souza ; Maria Fernanda Pimentel Avelar ; Mario Cesar Ugulino de Araujo ; Mauricio da Silva Baptista ; Regiane de Cássia Maritan Ugulino de Araújo ; Ricardo Saldanha Honorato ; Roberto Kawakami Harrop Galvão ; Simone da Silva Simões ; Takashi Yoneyama

Abstract

The present project has the main objective of introduce the time domain terahertz spectroscopy in the participating research institutions. The time domain spectroscopy has enabled the exploitation of the spectral region in the frequency range 0.3 to 20 THz. With this technique, the spectroscopy can be accomplished in a wide spectral range, with simultaneous measurement of optical properties such as absorption coefficients and refractive index, and to access fundamental information, from the analytical point of view, of samples present in the solid, liquid and gaseous state. The analytical information can be correlated with low energy interaction effects between chemical species and also allow to observe the primary and secondary structure of the molecules in the level of large groups of atoms. In consequence, THz spectroscopy must play a relevant role in the advancement of several fundamental and technological research areas. The thematic project join together a group of researchers active in several areas of knowledge, sharing the vision that the THz spectroscopy can help the development of they current research lines and open new horizons for new themes, which will be enabled by the new spectrometric tool. Aiming at the consolidation and to exploitation of THz spectroscopy in they institutions, the group of researchers proposes: 1) The installation of a center for time domain THz spectroscopy in the Chemistry Institute of UNICAMP; 2) The development of specific research actions of national interest, sheltered under the theme time domain THz spectroscopy; 3) The development of actions aiming at the dissemination the technique in the São Paulo State and Brazil. (AU)

Scientific publications

(8)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

VIEIRA, FRANCISCO S.; CRUZ, FLAVIO C.; PLUSQUELLIC, DAVID F.; DIDDAMS, SCOTT A.. Tunable resolution terahertz dual frequency comb spectrometer. Optics Express, v. 24, n. 26, p. 30100-30107, DEC 26 2016. (13/19093-9, 11/13777-8, 08/57857-2, 14/10125-8)

GALVAO, ROBERTO K. H.; MATSUURA, JACKSON P.; COLOMBO JUNIOR, JOSE ROBERTO; HADJILOUCAS, SILLAS. Detecting Compositional Changes in Dielectric Materials Simulated by Three-dimensional RC Network Models. IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION, v. 24, n. 2, p. 1141-1152, APR 2017. (11/13777-8, 11/17610-0)

HARROP GALVAO, ROBERTO KAWAKAMI; HADJILOUCAS, SILLAS; KIENITZ, KARL HEINZ; PAIVA, HENRIQUE MOHALLEM; MAGALHAES AFONSO, RUBENS JUNQUEIRA. Fractional Order Modeling of Large Three-Dimensional RC Networks. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, v. 60, n. 3, p. 624-637, MAR 2013. (11/13777-8, 11/17610-0, 11/18632-8)

JACYNTHO, LUIZ ANTONIO; MINHOTO TEIXEIRA, MARCELO CARVALHO; ASSUNCAO, EDVALDO; CARDIM, RODRIGO; HARROP GALVAO, ROBERTO KAWAKAMI; HADJILOUCAS, SILLAS. Identification of Fractional-Order Transfer Functions Using a Step Excitation. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, v. 62, n. 9, p. 896-900, SEP 2015. (11/13777-8, 11/17610-0)

HARROP GALVAO, ROBERTO KAWAKAMI; KIENITZ, KARL HEINZ; HADJILOUCAS, SILLAS; WALKER, GILLIAN CLAIRE; BOWEN, JOHN WESLEY; CARREIRO SOARES, SOFACLES FIGUEREDO; UGULINO ARAUJO, MARIO CESAR. Multivariate Analysis of the Dielectric Response of Materials Modeled using Networks of Resistors and Capacitors. IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION, v. 20, n. 3, p. 995-1008, JUN 2013. (11/13777-8, 11/17610-0)

MAGALHAES AFONSO, RUBENS JUNQUEIRA; HARROP GALVAO, ROBERTO KAWAKAMI; KIENITZ, KARL HEINZ; ALYAMI, HASHEM; BECERRA, VICTOR M.; HADJILOUCAS, SILLAS. Constrained pre-equalization accounting for multi-path fading emulated using large RC networks: applications to wireless and photonics communications. OPTICAL AND QUANTUM ELECTRONICS, v. 48, n. 7, JUL 2016. (11/13777-8, 11/17610-0, 11/18632-8)

DA SILVA, VITOR H.; VIEIRA, FRANCISCO S.; ROHWEDDER, JARBAS J. R.; PASQUINI, CELIO; PEREIRA, CLAUDETE F.. Multivariate quantification of mebendazole polymorphs by terahertz time domain spectroscopy (THZ-TDS). ANALYST, v. 142, n. 9, p. 1519-1524, MAY 7 2017. (11/13777-8, 08/57808-1)

HARROP GALVAO, ROBERTO KAWAKAMI; MINHOTO TEIXEIRA, MARCELO CARVALHO; ASSUNCAO, EDVALDO; PAIVA, HENRIQUE MOHALLEM; HADJILOUCAS, SILLAS. Identification of fractional-order transfer functions using exponentially modulated signals with arbitrary excitation waveforms. ISA TRANSACTIONS, v. 103, p. 10-18, AUG 2020. (11/13777-8, 11/17610-0)