Finished Projects and Prototypes

1. Tunable bulk-micromachined microspectrometer in silicon based in Fabry-Perot resonance cavity

$Descrição: Descrição: \\DEI-S1\wwwroot\pessoas\higino\Colorfp.jpg$

2. A CMOS optical microspectrometer with light-to-frequency converter,bus interface and stray-light compensation

$Descrição: Descrição: \\DEI-S1\wwwroot\pessoas\higino\Microphoto1.jpg$

3. X-rays microdetectors in silicon for medical imaging based on scintillator films (sponsored by FCT - POCTI/CTM/33751/99), finished on 31 August 2004

$Descrição: Descrição: \\DEI-S1\wwwroot\pessoas\higino\xrayschip.jpg$

3.1. Introduction

3.2. Publications

Journal Publications:

J. G. Rocha, J. H. Correia, A high-performance scintillator-silicon-well X-ray microdetector based on DRIE techniques, Journal Sensors and Actuators A, vol.92, pp. 203-207, full paper in Acrobat PDF, Elsevier Science 2001.

J. G. Rocha, C. G. J. Schabmueller, N. F. Ramos, S. Lanceros-Mendez, A. G. R. Evans, R. F. Wolffenbuttel, J. H. Correia, X-ray detector based on bulk-micromachined photodiode, Journal Micromechanics and Microengineering, IOP, pp. S45-S50, full paper in Acrobat PDF, July 2003.

J. G. Rocha, N. F. Ramos, S. Lanceros-Mendez, R. F. Wolffenbuttel and J. H. Correia, CMOS X-rays detector array based on scintillating light guides, Journal Sensors and Actuators A, Volume 110, February 2004, pp.119-123 full paper in Acrobat PDF, Elsevier Science 2004.

J. G. Rocha, C. G. J. Schabmueller, N. F. Ramos, S. Lanceros-Mendez, M. V. Moreira, A. G. R. Evans, R. F. Wolffenbuttel and J. H. Correia, Comparison between bulk micromachined and CMOS X-ray detectors, Journal Sensors and Actuators A, Vol. 115, pp.215-220, full paper in Acrobat PDF, September 2004, Elsevier Science.

Conference Publications:

J. G. Rocha, J. H. Correia, A high-performance scintillator-silicon-well X-rays microdetector based on DRIE techniques, Proc. de Eurosensors XIV, full paper in Acrobat PDF, Copenhaga, Dinamarca, 27-30 Agosto, pp. 329-332, 2000.

J. G. Rocha, N. F. Ramos, M. V. Moreira, S. Lanceros-Mendez, R. F. Wolffenbuttel, J. H. Correia, X-rays microdetectors based on an array of scintillators: a maskless process using LASER ablation, Proc. IEEE Sensors Conference, full paper in Acrobat PDF, pp.556-559, 10-12 June 2002, Orlando, Florida, USA.

J. G. Rocha, N. F. Ramos, M. V. Moreira, S. Lanceros-Mendez, R. F. Wolffenbuttel, J. H. Correia, CMOS X-rays microdetector based on scintillating light guides, Proc. Eurosensors XVI, full paper in Acrobat PDF, Prague, Rep. Checa, 15-18 Setembro, pp.525-528 , 2002.

J. G. Rocha, C. G. J. Schabmueller, N. F. Ramos, S. Lanceros-Mendez, A. G. R. Evans, R. F. Wolffenbuttel, J. H. Correia, X-ray detector based on bulk-micromachined photodiode, Proc. MME'2002, full paper in Acrobat PDF, Casino Sinaia, Roménia, Outubro, pp.323-326 , 2002.

J. G. Rocha, C. G. J. Schabmueller, N. F. Ramos, S. Lanceros-Mendez, M. V. Moreira, A. G. R. Evans, R. F. Wolffenbuttel, J. H. Correia, Comparison Between Bulk Micromachined and CMOS detectors for X-ray Measurements, Eurosensors XVII, pp.384-385, full paper in Acrobat PDF, 21-24 September 2003, Guimarães, Portugal.

J. G. Rocha, N. F. Ramos, R. F. Wolffenbuttel, J. H. Correia, CMOS X-ray image sensors with pixel level A/D conversion, Proc. of ESSCIRC'2003, pp.106-109, full paper in Acrobat PDF, 16-18 September 2003, Lisbon, Portugal.

N. F. Ramos, J. G. Rocha, S. Lanceros-Mendez, R. F. Wolffenbuttel, J. H. Correia, CMOS X-ray imager for dental radiography, Eurosensors XVII, pp.208-209, full paper in Acrobat PDF, 21-24 September 2003, Guimarães, Portugal.

J.G. Rocha, S. Lanceros-Mendez, J. H. Correia, Modeling of the performance of scintillator based X-ray detectors, IEEE Sensors 2004, pp.1257-1260, full paper in Acrobat PDF, 24-27 October 2004, Vienna, Austria.

3.3. Researchers

José Gerardo Vieira da Rocha (DEI)
Nuno Filipe da Silva Ramos (DEI)
Manuel Vitor Almeida Moreira (DF)
Carlos Alberto Caridade Monteiro Couto (DEI)
José Araújo Mendes (DEI)
Vasco Manuel Pinto Teixeira (DF)
Manuel Filipe Martins Costa (DF)
José Higino Gomes Correia (DEI)

4. Laboratorial microsystem in silicon for biological fluid analysis: a lab-on-chip in CMOS technology (sponsored by FCT - POCTI/ESE/33747/99), finished on 30 September 2004

$Descrição: Descrição: \\DEI-S1\wwwroot\pessoas\higino\labonchip.jpg$ $Descrição: Descrição: \\DEI-S1\wwwroot\pessoas\higino\su8labonchip.jpg$

4.1. Introduction

4.2. Publications

Journal Publications:

G. Minas, J. S. Martins, J. H. Correia, High-selectivity optical detection in microfluidic systems for clinical diagnostics, Journal of Sensors and Materials, Vol. 14, Nº2, pp.77-89, full paper in Acrobat PDF, Japan, 2002.

G. Minas, J. S. Martins, J. C. Ribeiro, R.F. Wolffenbuttel, J. H. Correia, Biological microsystem for measuring uric acid in biological fluids, Journal Sensors and Actuators A, 110, pp.33-38, full paper in Acrobat PDF, Elsevier Science 2004.

G. Minas, J. C. Ribeiro, J. S. Martins, R. F. Wolffenbuttel and J. H. Correia, An array of Fabry-Perot optical-channels for biological fluids analysis, Journal Sensors and Actuators A, Vol. 115, pp.362-367, full paper in Acrobat PDF, September 2004, Elsevier Science.

Conference Publications:

G. Minas; J. S. Martins; J. H. Correia, A Lab-on-a-Chip for Biological Fluids Analysis. In 5th Portuguese Conference on Biomedical Engineering, full paper in Acrobat PDF, Coimbra, 26-27 de Maio, pp. 1-4, 2000.

G. Minas, J. S. Martins,R.F. Wolffenbuttel, J. H. Correia, High-selectivity optical detection in microfluidic systems for clinical diagnostics, Proc. de Eurosensors XIV, full paper in Acrobat PDF, Copenhaga, Dinamarca, 27-30 Agosto, pp. 873-876, 2000.

G. Minas, J. S. Martins, C. Lima, C. Pereira, R.F. Wolffenbuttel, J. H. Correia, Lab-on-a-chip for measuring uric acid in biological fluids, Proc. de Eurosensors XVII, full paper in Acrobat PDF, Prague, Rep. Checa, 15-18 Setembro, pp. 66-69, 2002.

G. Minas, J. C. Ribeiro, S. Lanceros-Mendez, F. Vaz, R.F. Wolffenbuttel, J. H. Correia, Biosystem with 16 highly-selective optical-channels for biological fluids analysis in the visible spectrum, Proc. of Transducers'03, pp.1251-1254, full paper in Acrobat PDF, Boston, USA, 8-12 June, 2003.

G. Minas, J. C. Ribeiro, J. S. Martins, R. F. Wolffenbuttel, J. H. Correia, A 16 Fabry-Perot Optical-Channels Array for Biological Fluids Analysis using White Light, Eurosensors XVII, pp.28-30, full paper in Acrobat PDF, 21-24 September 2003, Guimarães, Portugal.

G. Minas, J. C. Ribeiro, R. F. Wolffenbuttel, J. H. Correia, 2-D modeling and simulation of fluidic microsystems for biological fluids analysis, Proc. MME 2003, full paper in Acrobat PDF, November 2-4, 2003, Delft, The Netherlands.

J. C.Ribeiro, G. Minas G., P. Turmezei, R. F. Wolffenbuttel, J. H. Correia, A SU-8 fluidic microsystem for biological fluids analysis, Proc. Eurosensors XVIII, pp.126-127, full paper in Acrobat PDF, 12-15 September 2004, Rome, Italy.

G.Minas, J. C. Ribeiro, G. de Graaf, R. F. Wolffenbuttel, J. H. Correia, A MCM-based microsystem for biological fluids analysis by optical absorption, IEEE Sensors 2004, pp. 223-226, full paper in Acrobat PDF, 24-27 October 2004, Vienna, Austria.

4.3. Researchers

Graça Maria Henriques Minas (DEI)
Cristóvão Lima (Biologia)
Júlio Manuel Sousa Barreiros Martins (DEI)
José Araújo Mendes (DEI)
Cristina Maria da Silveira e Silva Pereira (Biologia)
Olga Maria Fernandes Pereira Coutinho (Biologia)
José Higino Gomes Correia (DEI)

5. Bioreactor-on-a-chip (sponsored by UM/Center Algoritmi)

5.1. Introduction

This project consists on a miniaturized bioreactor (bioreactor-on-a-chip) applied to baker's yeast fermentation. The bioreactor-on-a-chip is fabricated using a silicon and glass wafers applying micromachining technology (wet-etching techniques) in order to create microchannels, mixerchannels and microvalves. The miniaturization and integration allows smaller volumes to be used, which can be often rather challenging from the analytical point of view. Also, optical detection by absorption, electrochemical detection using microelectrodes and membranes are used. Moreover, electroanalytical techniques used in bioelectrochemistry (e.g. microdialysis, capillary electrophoresis and HPLC) are employed.

5.2. Publications

Conference Publications:

1. F. O. Soares, J. H. Correia, Bioareactor-on-a chip: application to Baker's yeast fermentation, Proc. 1st Annual International IEEE-EMBS Special Topic Conference on Microtechnologies in Medicine & Biology, full paper in Acrobat PDF, Lyon, França, 12-14 Outubro, pp. 45-48, 2000.

2. F. O. Soares, Pedro Gomes, J. H. Correia, A bioareactor based on optical measurements for Baker's yeast fermentation, Proc. Eurosensors XVI, full paper in Acrobat PDF, Prague, Rep. Checa, 15-18 Setembro, pp.1121-1122 , 2002.

5.3. Researchers

Pedro Gomes (DEI)
Graça Maria Henriques Minas (DEI)
José Higino Gomes Correia (DEI)
Filomena Soares (DEI)

6. On-chip CMOS-compatible RF micromachined inductors for wireless communications (sponsored by FCT - POCTI/ESE/38468/2001)

6.1. Introduction

6.2. Publications

Journal Publications:

P. M. Trabulo, D. A. Durães, P. M. Mendes, P. J. Garrido, J.H. Correia, Spiral inductors on silicon for wireless communications, ADVANCED MATERIALS FORUM, Vol. 455-456, pp. 116-119, full paper in Acrobat PDF, Trans. Tech Publications Switzerland 2004.

A. Polyakov, S. Sinaga, P.M. Mendes, M. Bartek, J.H. Correia, J.N. Burghartz, High-Resistivity Polycrystalline Silicon as RF Substrate in Wafer-Level Packaging, Electronic Letters, Vol. 41, No. 2, pp. 100-101, full paper in Acrobat PDF, January 2005.

P.M. Mendes, A. Polyakov, M. Bartek, J.N. Burghartz, J.H. Correia, Integrated chip-size antennas for wireless microsystems: Fabrication and design considerations, Journal Sensors and Actuators A, Vol.125 , pp. 217-222, full paper in Acrobat PDF, January 2006.

Conference Publications:

P. Mendes, J.H. Correia, M. Bartek, J.N. Burghartz, Analysis of Chip-Size Antennas on Lossy Substrates for Short-Range Wireless MicroSystems,in Proc. SAFE 2002, full paper in Acrobat PDF,Veldhoven, The Netherlands, Publ. STW, ISBN 90-73461-33-2, pp. 51-54, November 27-28, 2002.

P. M. Trabulo, D. A. Durães, P. M. Mendes, P. J. Garrido, J.H. Correia, Spiral inductors on silicon for wireless communications, in Proc. Materials 2003, full paper in Acrobat PDF,Costa da Caparica, Portugal, pp. 1-4, April 14-16, 2003.

P.M. Mendes, M. Bartek, J.N. Burghartz, J. H. Correia, Design and Analysis of a 6 GHz Chip Antenna on Glass Substrates for Integration with RF/Wireless Microsystems, 2003 IEEE AP-S, full paper in Acrobat PDF, Columbus, Ohio, USA, June 22-27, 2003.

P.M. Mendes, M. Bartek, J.N. Burghartz, J. H. Correia, Design and Tolerance Analysis of a 5.7 GHz Chip-Size Microstrip Antenna on High Resistivity Silicon, 2003 IEEE AP-S, full paper in Acrobat PDF, Columbus, Ohio, USA, June 22-27, 2003.

P.M. Mendes, A. Polyakov, M. Bartek, J.N. Burghartz, J. H. Correia, Extraction of Glass-Wafers Electrical Properties Based on S-Parameters Measurements of Coplanar Waveguides, ConfTele, full paper in Acrobat PDF, June 2003, Portugal.

P.M. Mendes, A. Polyakov, M. Bartek, J.N. Burghartz, J.H. Correia,
Integrated 5.7 GHz Chip-Size Antenna for Wireless Sensor Networks, Proc. Transducers 03, pp.49-52, full paper in Acrobat PDF, 8-12 June 2003, Boston, Massachuesetts, USA

P.M. Mendes, A. Polyakov, M. Bartek, J.N. Burghartz, J.H. Correia, Integrated Chip-Size Antenna for Wireless Microsystems: Fabrication and Design Considerations, Eurosensors XVII, pp.438-439, full paper in Acrobat PDF, 21-24 September 2003, Guimarães, Portugal.

P. M. Mendes, D. A. Durães, M. Bartek, J. H. Correia, Efficiency Improvement of a Chip-Size Antenna for Wireless Microsystems Using Bulk-Micromachining Technology, Eurosensors XVII, pp.725-726, full paper in Acrobat PDF, 21-24 September 2003, Guimarães, Portugal.

P.M. Mendes, A. Polyakov, M. Bartek, J.N. Burghartz, J. H. Correia, Design of a Folded-Patch Chip-Size Antenna for Short-Range Communications, European microwave conference 2003, pp.723-726, full paper in Acrobat PDF, 7-10 October 2003, Munich, Germany.

P.M. Mendes, A. Polyakov, M. Bartek, J.N. Burghartz, J.H. Correia, Folded-Patch Chip-Size Antennas for Wireless Microsystems using Wafer-Level Chip-Scale Packaging, MME 2003, full paper in Acrobat PDF, November 2-4, 2003, Delft, The Netherlands.

P.M. Mendes, S.M. Sinaga, A. Polyakov, M. Bartek, J.N. Burghartz, J.H. Correia, Wafer-Level Integration of On-Chip Antennas and RF Passives Using High-Resistivity Polysilicon Substrate Technology, 54th ECTC conference, Las Vegas, Nevada, USA, June 1-4, 2004, ISBN 0-7803-8365-6, pp. 1879-1884.

J. P. Carmo, P. M. Mendes, C. Couto, J.H. Correia, On-chip CMOS wireless sensors interface for automotive applications, Proc. Eurosensors XVIII, pp.387-388, full paper in Acrobat PDF, 12-15 September 2004, Rome, Italy.

P.M. Mendes, M. Bartek, J.N. Burghartz, J.H. Correia, Novel Very Small Dual-Band Chip-Size Antenna for Wireless Sensor Networks, IEEE RAWCON 2004, pp. 419-422, 19-22, full paper in Acrobat PDF, September 2004, Atlanta, USA.

P.M. Mendes, M. Bartek, J.N. Burghartz, J.H. Correia, Size Reduction and Tuning of Integrated Folded Patch Antennas Using Slots, EuMW, pp. 1337-1340, full paper in Acrobat PDF,11-15 October 2004, Amsterdam, the Netherlands.

P.M. Mendes, A. Polyakov, M. Bartek, J.N. Burghartz, J.H. Correia, An Integrated Folded-Patch Chip-Size Antenna Using High-Resistivity Polycrystalline Silicon Substrate, ASDAM 2004, pp. 311-314, full paper in Acrobat PDF,17-21 October 2004, Smolenice Castle, Slovakia.

M. Bartek, A. Polyakov, S.M. Sinaga, P.M. Mendes, J.H. Correia, J.N. Burghartz, Characterization of High-Resistivity Polycrystalline Silicon Substrates for Wafer-Level Packaging and Integration of RF Passives, ASDAM 2004, pp. 277-230, full paper in Acrobat PDF, 17-21 October 2004, Smolenice Castle, Slovakia.

P.M. Mendes, A. Polyakov, M. Bartek, J.N. Burghartz, J.H. Correia, An Integrated Folded-Patch Antenna for Wireless Microsystems, IEEE Sensors 2004, pp.485-488, full paper in Acrobat PDF, 24-27 October 2004, Vienna, Austria.

A. Polyakov, S.M. Sinaga, P.M. Mendes, M. Bartek, J. H. Correia, J.N. Burghartz, Proc. IMAPS 2004, , publ. IMAPS, ISBN 0-930815-74-2, paper WP1-7, 8 p. full paper in Acrobat PDF, 14-18 November 2004, Long Beach, CA, USA.

J. H. Correia, P. M. Mendes, Wireless hydrotherapy smart suit for monitoring handicapped people, 2004 SPIE conference in Smart Materials, Nano-, and Micro-Smart Systems, 12-15 December 2004, pp.385-392, full paper in Acrobat PDF, Sydney, Australia.

J. P. Carmo, P. M. Mendes, C. Couto, J.H. Correia, Low-power low-voltage RF CMOS transceiver at 2.4 GHz, Proc. 5th Conference on Telecommunications, pp.1-4, full paper in Acrobat PDF, Tomar, Portugal, 6-8 April 2005.

J. P. Carmo, P. M. Mendes, C. Couto, J.H. Correia, 2.4 GHz wireless sensor network for smart electronic shirts, Proc. Microtechnologies for the New Millennium 2005, pp.579-586, full paper in Acrobat PDF, Sevilha, Spain, 9-11 May 2005.

J. H. Correia, N. S. Dias, C. A. Barbosa, P. M. Mendes, A chip-size antenna for wireless EEG, Proc. of MME 2005, pp.362-365, full paper in Acrobat PDF, Gothemburg, Sweden, September 4-6, 2005.

J. P. Carmo, P. M. Mendes, C. Couto, J.H. Correia, 5.7 GHz on-chip antenna/RF CMOS transceiver for wireless sensors network, Proc. Eurosensors XVIII, pp.TC.1-2, full paper in Acrobat PDF, 11-14 September 2005, Barcelona, Spain.

J. C.Ribeiro, S. M. Oliveira, P. M. Mendes, J.H. Correia, Wireless interface for sensors in smart textiles, Proc. Eurosensors XVIII, pp.TC2.1-2, full paper in Acrobat PDF, 11-14 September 2005, Barcelona, Spain.

J. P. Carmo, P. M. Mendes, C. Couto, J.H. Correia, A 2.4-GHz RF CMOS transceiver for wireless sensor applications, Proc. CEE'05 - International
Conference on Electrical Engineering, full paper in Acrobat PDF, 10-12 October 2005, Coimbra, Portugal.

6.3. Researchers

Paulo Mateus Mendes (DEI)

Carlos Alberto Caridade Monteiro Couto (DEI)

Paulo Garrido (DEI)

Pedro Trabulo (DEI)

Dalila Durães (DEI)

Nuno Dias (DEI)

Sara Oliveira (DEI)

José Higino Gomes Correia (DEI)

7. Micropyrometer (consortium LEICA/UM (DEI, Tecminho, Dept. of Physics) sponsored by Agência de Inovação

7.1. Introduction

The aim of this project is to realize a miniaturized self-calibrated pyrometer to detect infrared radiation in order to measure the real temperature of objects without contact. The microsystem consists of a thermally insulated absorbing area and two thermopiles (p-polysilicon/n-polysilicon thermocouples) with the hot junctions in the absorbing area and the cold junctions on a heat sink (i.e. the silicon bulk). The complete microsystem is in silicon planar technology and each thermopile has a different reference temperature, biased by a Peltier microstructure (e.g. doped polysilicon or chromium-nickel strip) near to the cold junction of the thermopile. A silicon die passivated with a silicon nitride membrane is the groundfloor of all microsystem. The absorbing area, a black gold strip on the silicon nitride membrane is obtained by anisotropic etching of the bulk silicon from the back of the wafer (with KOH). Moreover, since circuitry can be integrated on the same chip, the advantages of a fully integrated solution become available.

7.2. Publications

Journal Publications:

L. M. Goncalves, C. Couto, P. Alpuim, D. M. Rowe, J.H. Correia, Thermoelectric microstructures of Bi2Te3/Sb2Te3 for a self-calibrated micro-pyrometer, Journal Sensors and Actuators A, Vol. , pp., full paper in Acrobat PDF, Elsevier Science 2006.

Conference Publications:

L. M. Gonçalves, L. G. Gomes, S. F. Ribeiro, C. Couto, J.H. Correia, A miniaturized self-calibrated pyrometer microsystem, Eurosensors XVII, pp.568-569, full paper in Acrobat PDF, 21-24 September 2003, Guimarães, Portugal.

L. M. Goncalves, C. Couto, P. Alpuim, D. M. Rowe, J.H. Correia, Thermoelectric Properties of Bi2Te3 / Sb2Te3 Thin Films, in Proc. Materials 2005, full paper in Acrobat PDF,Aveiro, Portugal, pp. 1-5, March 20-23, 2005.

L. M. Goncalves, C. Couto, P. Alpuim, D. M. Rowe, J.H. Correia, Thermoelectric Microstructures of Bi2Te3/Sb2Te3 for a Self-calibrated Micropyrometer, in Proc. Transducers 2005, pp. 904-907, full paper in Acrobat PDF, Seoul, Korea, June 5-9, 2005.

7.3. Researchers

Luís Gonçalves (DEI)
Pedro Alpuim (DF)
Carlos Corsino (Tecminho-UM)
Miguel Leão (LEICA)
José Higino Gomes Correia (DEI)
Carlos Alberto Caridade Monteiro Couto (DEI)

8. PELLISAQUAE (consortium P&R TÊXTEIS S.A., LMA Ltd, CITEVE, DEI) sponsored by Agência de Inovaçã

Researchers

Luis Alexandre Rocha (DEI)
Paulo Mendes (DEI)
José Higino Gomes Correia (DEI)
Carlos Alberto Caridade Monteiro Couto (DEI)

9. Reequipamento

REEQ/379/EEI/2005

Micro-sistemas em silício com RF para aplicações biomédicas: um laboratório num chip

http://dei-s1.dei.uminho.pt/pessoas/higino/reequip_379.htm

10- PTDC/EEA-ENE/66855/2006, “Thermoelectric energy scavenging microsystem”, supported by Fundação para a Ciência e a Tecnologia, started 1st September 2007 finished on 31 December 2010

10.1. Introduction

This project purposes a new global approach for power generation, by associating a Seebeck thermo generator with thin-film integrated batteries used
as energy reservoir in an ultra-low consumption power management device.
The expected original contributions are:
• The fabrication of thermoelectric microgenerators in a reproducible way with standard microsystem technologies.
• The use co-deposition of the tellurides avoiding more complex and expensive systems (MOCVD).
• To achieve a power density of 2-20 mW/cm2, with a temperature gradient of 3-10 ºC.
• Require a minimum temperature gradient of 3 ºC for powering wireless sensors.
• The integration of thermoelectric microgenerators, microelectronics and solid-state battery in the same device.
• To use on-chip rechargeable thin-film Li-ion battery and DC-DC converter.
• Use Bi2Te3 and Sb2Te3 materials for thermoelectric energy harvesting rather than for conventional Peltier cooling.

10.2. Publications

Journal Publications:

38. L. M. Goncalves, C Couto, P Alpuim, J H Correia, Thermoelectric micro converters for cooling and energy-scavenging systems, Journal Micromechanics and Microengineering, IOP, pp.1-5, full paper in Acrobat PDF, Vol. 18, Nº6, June 2008.

39. L. M. Goncalves, J G Rocha, C Couto, P Alpuim, J H Correia, On-Chip Array of Thermoelectric Peltier Microcoolers, Journal Sensors and Actuators A, Vol.145-146, pp. 75-80, full paper in Acrobat PDF, August 2008, Elsevier Science 2008.

40. L. M. Gonçalves, C. Couto, J. H. Correia, Optimization of Bi2Te3 and Sb2Te3 thin films deposited by co-evaporation on polyimide for thermoelectric applications, Vaccum, vol. 82, pp.1499-1502, full paper in Acrobat PDF, Elsevier Science August 2008.

41. J.P. Carmo, L.M. Goncalves, and J.H. Correia, "Improved p- and n-type thin-film microstructures for thermoelectricity", Electronic Letters, Vol. 45, No. 15, pp. 803-805, IP=1.140., full paper in Acrobat PDF, July 2009.

42. J. P. Carmo, R. P. Rocha, A. F. Silva, L. M. Goncalves, J. H. Correia"A thin-film rechargeable battery for integration in stand-alone microsystems", in Procedia Chemistry, 2009, Elsevier Science, pp. 453-456. Full paper in Adobe PDF, September 2009.

44. J. P. Carmo, L. M. Goncalves and J. H. Correia, "Thermoelectric Microconverter for Energy Harvesting Systems", IEEE Transactions on Industrial Electronics, Vol. 57, No. 3, PP. 861-867, IF = 5.468. Full paper in Adobe PDF, March 2010.

45. Optimization of thermoelectric properties on Bi₂Te₃ thin films deposited by thermal co-evaporation, L.M. Goncalves, C. Couto, P. Alpuim, A.G. Rolo, F. Völklein, J.H. Correia, Thin Solid Films, Volume 518, Issue 10, March 2010, PP. 2816-2821, IF=1.884 Full paper in Adobe PDF, March 2010.

51. J. P. Carmo, L. M. Goncalves, R. F. Wolffenbuttel, and J. H. Correia, "A planar thermoelectric power generator for integration in wearable microsystems", Sensors and Actuators A: Physical, Elsevier, IF=1.70, Vol. 161, Issues 1-2, June 2010, pp. 199-204. Full paper in Adobe PDF, June 2010.

52. J P Carmo, J F Ribeiro, M F Silva, L M Goncalves and J H Correia, "Thermoelectric generator and solid-state battery for stand-alone microsystems", Journal of Micromechanics and Microengineering: Institute of Physics (IOP) Publishing, Vol. 20, No. 8, pp. 1-8, IF=1.997, Full paper in Adobe PDF, August 2010.

Conference Publications:

L.M. Goncalves, A. Ferreira da Silva, H.R. Silva, Rui Rocha, C. Couto, P. Alpuim, J.H. Correia, Thermoelectric micro converters for cooling and energy scavenging, Proceedings of the XVIII Conference MicroMechanicsEurope (MME), full paper in Acrobat PDF, Guimaraes, Portugal, pp. 391-394, September 16-18, 2007.

L.M. Goncalves, H.R. Silva, Rui Rocha, P. Alpuim, J.H. Correia, Thermoelectric thin-films for microcoolers and energy scavenging microsystems, Proceedings of NanoSpain2008, full paper in Acrobat PDF, Braga, Portugal, pp. 1-2, April 14-18, 2008.

L.M. Goncalves, Rui Rocha, A F. Silva, J. P. Carmo, P. Alpuim, J.H. Correia, A human-body thermoelectric energy scavenging microsystem, Proceedings of MME 2008, full paper in Acrobat PDF, Aachen, Germany, pp. 49-52, September 28-30, 2008.

J. P. Carmo, J. H. Correia, "A wireless EEG acquisition system with thermoelectrics scavenging microdevice", full paper in Acrobat PDF, pp.380-383, Proc. Biodevices 2009, Porto, Portugal, 14-17 January 2009.

J. P. Carmo, R. P. Rocha, A. F. Silva, L. M. Goncalves, J. H. Correia, "Integrated thin-film rechargeable battery in a thermoelectric scavenging microsystem", in Proc. Powereng 2009, Lisbon, Portugal, full paper in Acrobat PDF, pp. 359-363, 18-20 March, 2009.

J. P. Carmo, R. P. Rocha, A. F. Silva, L. M. Goncalves, J. H. Correia, "Sputtered SnO2 for application in thin-film solid state microbatteries", in Proc. Materiais 2009, Lisbon, Portugal, 5-8 April, 2009, pp. 1-5. Full paper in Adobe PDF.

J. P. Carmo, R. P. Rocha, A. F. Silva, L. M. Gonçalve, P. M. Mendes, J. H. Correia, "Low-power wireless microsystems for use with thermoelectric scavenging systems", in Proc. Wireless Telecommunications Symposium 2009, Praga, Republica Checa, 22-24 Abril 2009, Session D-2, pp. 1-7. Full paper in Adobe PDF

J. P. Carmo, R. P. Rocha, A. F. Silva, L. M. Goncalves, J. H. Correia"A thin-film rechargeable battery for integration in stand-alone microsystems", in Proc. Eurosensors 2009, Lausanne, Switzerland, 6-9 September 2009, pp. 453-456. Full paper in Adobe PDF.

J. P. Carmo, R. P. Rocha, L. M. Goncalves, J. H. Correia, High-resolution miniaturized stereoscopic image sensor in CMOS technology for endoscopic capsules with integrated battery, Proceedings of MME 2009, full paper in Acrobat PDF, Toulouse, France, pp. A23(1-4), September 20-22, 2009.

L.M. Goncalves , R. P. Rocha, J.P. Carmo, J.H. Correia, Solid-State Microcoolers and Thermal Energy Harvesting Microsystems, Proceedings of IECON 2009, full paper in Acrobat PDF, Porto, Portugal, pp. 4076-4080, November 2-5, 2009.

R. P. Rocha, J. P. Carmo, L. M. Goncalves, J. H. Correia, An energy scavenging microsystem based on thermoelectricity for battery life extension in laptops, Proceedings of IECON 2009, full paper in Acrobat PDF, Porto, Portugal, pp. 1827-1830, November 2-5, 2009.

Luís Gonçalves (DEI)
Pedro Alpuim (DF)
João Paulo Carmo (IPB)
Luis Rocha (FEUP-UP)
José Afonso (DEI)
Carlos Alberto Caridade Monteiro Couto (DEI)
José Higino Gomes Correia (DEI)

11. Brain computer interface and microelectrodes for neural probes (Pensilvania State University, USA, RWTH-Aachen, Siemens Medical) sponsored by Algoritmi Center

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Introduction

A brain computer interface (BCI) is a real-time communication system designed to allow users to voluntarily send messages or commands without sending them through the brain's normal output pathways. A BCI device allows people to communicate without movement. People can send information simply by thinking. Everybody can imagine how useful would be a system that could know accurately what we desire to do
just by reading our scalp potentials. BCI users must produce distinct EEG signatures when engaged in discrete mental tasks originated by visual stimuli. P300 test could be the trigger of these tasks. In a P300 test we don’t analyze the free running electroencephalogram (recorded EEG) but the event related potentials (ERP) which are voltage fluctuations in the EEG induced within the brain that are time locked to sensory,
motor, or cognitive events. The ERPs consist of a sequence of positive and negative voltage fluctuations. These components reflect various sensory, cognitive (e.g., stimulus evaluation) and motor processes that are classified on the basis of their scalpdistribution and response to experimental variables. The P300 component is a positive bump in the ERP that typically starts around 300 ms after an event and reflects a cognitive process about the deviant event (an event highlighted from the background events). Mismatch Negativity (MMN) component is a negative bump in the ERP that starts before 250 ms after the event presentation and reflects the response to the difference between successive stimuli

Publications

Conference Publications:

N. S. Dias, P. M. Mendes, J. H. Correia, Subject age in P300 BCI, 2nd International IEEE EMBS Conference on Neural Engineering, pp. 579-582, full paper in Acrobat PDF, Arlington, Virginia, USA, March 16 - 19, 2005.

J. H. Correia, N. S. Dias, C. A. Barbosa, P. M. Mendes, A chip-size antenna for wireless EEG, Proc. of MME 2005, pp.362-365, full paper in Acrobat PDF, Gothemburg, Sweden, September 4-6, 2005.

N. S. Dias, P. M. Mendes, J. H. Correia, Brain Computer Interface through Vision Systems Pathways, pp. 3-4, full paper in Acrobat PDF, 8ªConferência Portuguesa de Engenharia Biomédica Sociedade Portuguesa de Engenharia Biomédica, Reitoria da Universidade Nova de Lisboa, Lisboa 9-10 de Junho 2006.

J. H. Correia, B. Wessling, N. S. Dias, H. R. Silva, W. Mokwa, U. Schnakenberg, Sputtered TiN and IrO2 electrodes versus standard AG/AGCL electrodes for non-invasive EEG applications, Proc. of MME 2006, pp.25-28, full paper in Acrobat PDF, Southampton, UK, 3-5 September 2006.

N. S. Dias, D. Klayton, M. Liu, V. Nguyen, D. Wu, W. X. Yan, M. Yen, Y. Zhao, P. M. Mendes, J. H. Correia, P. M. Cammer, S. J. Schiff,
Brain-machine interface for wheel chair control, Proc. Neuroscience, No. 25, pp.1-2, full paper in Acrobat PDF, 15 October 2006, Atlanta, GA, USA.

J. P. Carmo, N. Dias, P. M. Mendes, C. Couto, J. H. Correia, Low-power 2.4-GHz RF transceiver for wireless EEG module plug-and-play, Proc. 13th IEEE International Conference on Electronics Circuits and Systems, pp. 1144-1147, Nice, França, full paper in Acrobat PDF, Dezembro 2006

Researchers

José Higino Gomes Correia (DEI)
Paulo Mendes (DEI)
S. Schiff (PSU, USA)
Nuno Dias (DEI)
Helder Silva (DEI)
Carla Barbosa (DEI)
José Fernando Ferreira (DEI)
José Gomes (DEI)
Alexandre Silva (DEI)

12. Wireless biomedical microsystem for neural implants, FCT, PTDC/SAU-BEB/100392/2008

This project proposes to develop 3-D button-size microelectrodes array with embedded signal processing electronics and a wireless interface. Microelectrodes will be designed for insertion in any part of cerebral cortex. They will integrate features as wireless communications and can provide electrical recording and stimulation. Having 3-dimensional recording capability by itself will permit the most complete mapping of local circuitry in the brain. In order to fabricate thin-film electrode arrays capable of recording from neurons in vivo on a chronic basis, we need a microprobe structure that can be fabricated reproducibly and is electronically stable in vivo.

Starting date: 1 January 2010

End date: 31 December 2012

Budget: 180.000,00 €

Researchers

Nuno Dias (DEI)
Joao Carmo (DEI)
Paulo Mendes (DEI)
Graça Minas (DEI)
Luis Jacinto (DEI)
Carlos Lima (DEI)
José Higino Gomes Correia (DEI)

13- New functions in gastro-intestinal cancer detection

Role: Coordinator

Funds: 900.000,00 €, QREN-Portugal

Consortium: INOVA+, EAC, UMinho

Start: 1 January 2010. End: 10 December 2012

14- PhotonicPill – devices based in optical functions

Role: Coordinator

Funds: 800.000,00 €, QREN-Portugal

Consortium: INOVA+, EMC, UMinho

Start: 1 July 2013. End: 30 June 2015

15- CMEMS Strategic Project in gastro-intestinal cancer detection

Role: Coordinator

Funds: 1.082.682,00 €, Project reference: UID/EEA/04436/2013, FCT and H2020.

Start: 1st January 2015. End: 31 December 2018.

16- MicroNanoFabs@PT Infrastructure

Role: Coordinator at University of Minho

Funds: 800.736,00 €, Project reference: 01/SAICT/2, QREN-Portugal, Horizon 2020

Consortium: INL, INESC-MN, UMinho

Start: 1 October 2017. End: 30 September 2020

17-OCT-RAMAN – Optical Coherence Tomography and Raman Spectroscopy in-vivo diagnostic for colon-rectal cancer

Role: Coordinator

Funds: 250.000,00 €, FCT-Portugal

Consortium: CMEMS-UMinho and ICVS-Faculty of Medicine

Start: 1 July 2018. End: 30 June 2021