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Manipulation of exposure dose parameters to improve production of high aspect ratio structures using SU-8 (2012)
Journal Article
Daunton, R., Gallant, A., & Wood, D. (2012). Manipulation of exposure dose parameters to improve production of high aspect ratio structures using SU-8. Journal of Micromechanics and Microengineering, 22(7), Article 075016. https://doi.org/10.1088/0960-1317/22/7/075016

The detailed consideration of the chemistry occurring during the fabrication process is very important for SU-8 compared to other photoresists. In SU-8, the solvent does far more than just act as a carrier for the photoactive compounds: it plays a pr... Read More about Manipulation of exposure dose parameters to improve production of high aspect ratio structures using SU-8.

Microelectrode arrays for electroanalytical sensing : Comparison of electroplating and electron-beam metallisation. (2011)
Journal Article
Delcourt Lancon, A., Kataky, R., Wood, D., & Gallant, A. (2011). Microelectrode arrays for electroanalytical sensing : Comparison of electroplating and electron-beam metallisation. Electrochemistry Communications, 13(5), 414-417. https://doi.org/10.1016/j.elecom.2011.02.007

This paper demonstrates the differences in electrochemical response obtained by two distinct methods of gold microelectrode array fabrication. An array of 306 gold recessed microelectrodes (45 μm in diameter) was fabricated using lithography, metalli... Read More about Microelectrode arrays for electroanalytical sensing : Comparison of electroplating and electron-beam metallisation..

Optimizing MOM diode performance via the oxidation technique (2011)
Presentation / Conference Contribution
Dodd, L., Gallant, A., & Wood, D. (2011, October). Optimizing MOM diode performance via the oxidation technique. Presented at 2011 IEEE Sensors, Limerick, Ireland

This work presents a study of the effect of a simple oxidation technique on the electrical performance of Ti/TiOx/Pt MOM (metal-oxide-metal) diodes. A fabrication process has been designed to produce devices with a high yield. The I-V characteristics... Read More about Optimizing MOM diode performance via the oxidation technique.

A thermally actuated microgripper as an electrochemical sensor with the ability to manipulate single cells (2011)
Journal Article
Daunton, R., Gallant, A., Wood, D., & Kataky, R. (2011). A thermally actuated microgripper as an electrochemical sensor with the ability to manipulate single cells. Chemical Communications, 47(22), 6446-6448. https://doi.org/10.1039/c1cc11904d

The design and fabrication of a thermally actuated polymeric microgripper incorporating a bare gold working electrode is described. Initial electrochemical tests confirm that the microgripper sensor works as an effective microelectrode, opening up ex... Read More about A thermally actuated microgripper as an electrochemical sensor with the ability to manipulate single cells.

Microelectrode Array Supported by Microfluidic Channel for High-Throughput Sensing: Fabrication and Characterisation (2010)
Journal Article
Delcourt Lancon, A., Kataky, R., Wood, D., & Gallant, A. (2010). Microelectrode Array Supported by Microfluidic Channel for High-Throughput Sensing: Fabrication and Characterisation. ECS Transactions, 33(8), 221-227. https://doi.org/10.1149/1.3484125

The fabrication and characterisation of a microelectrode array supported by microfluidic channels for electroanalytical application are described in this paper. An array of 306 gold recessed microelectrodes (45 µm diameter) was fabricated using litho... Read More about Microelectrode Array Supported by Microfluidic Channel for High-Throughput Sensing: Fabrication and Characterisation.

Low voltage microgripper for single cell manipulation (2009)
Presentation / Conference Contribution
Solano, B., Gallant, A., Greggains, G., Wood, D., & Herbert, M. (2009, September). Low voltage microgripper for single cell manipulation. Presented at 3rd International Conference on Smart Materials, Structures and Systems, Acireale, Italy

In this work, we present the characterisation of an electrothermally actuated microgripper that operates in both dry and liquid media, and shows improved performance versus existing devices. The microgripper, fabricated in a combination of polymeric... Read More about Low voltage microgripper for single cell manipulation.

Fabrication of an in-plane SU-8 cantilever with integrated strain gauge for wall shear stress measurements in fluid flows (2009)
Presentation / Conference Contribution
Allen, N., Wood, D., Rosamond, M., & Sims-Williams, D. (2009, September). Fabrication of an in-plane SU-8 cantilever with integrated strain gauge for wall shear stress measurements in fluid flows. Presented at Eurosensors XXIII conference, Lausanne, Switzerland

We present a cantilever fabricated from the polymer SU-8 for the measurement of wall shear stress in fluid flows. The pressure induced deflection of the cantilever, measured using a calibrated and integrated nichrome strain gauge, can be related to t... Read More about Fabrication of an in-plane SU-8 cantilever with integrated strain gauge for wall shear stress measurements in fluid flows.

A robust, fine pitch probe card (2009)
Journal Article
Rosamond, M., Gallant, A., & Wood, D. (2009). A robust, fine pitch probe card. Procedia chemistry, 1(1), 792-795. https://doi.org/10.1016/j.proche.2009.07.197

A new type of probe card is described which consists of inclined nickel cantilevers formed on top of a three dimensional PDMS layer. A prototype card has been built with an in-line pitch of 23 μm. The presence of a PDMS layer beneath the cantilevers... Read More about A robust, fine pitch probe card.

Porous PDMS force sensitive resistors (2009)
Journal Article
King, M., Baragwanath, A., Rosamond, M., Wood, D., & Gallant, A. (2009). Porous PDMS force sensitive resistors. Procedia chemistry, 1(1), 568-571. https://doi.org/10.1016/j.proche.2009.07.142

Here we present an elastomeric force sensitive resistor (FSR) made from a porous matrix of polydimethylsiloxane (PDMS) filled with carbon black. The fabrication process is based on the use of a low cost sacrificial sugar cube scaffold which leads to... Read More about Porous PDMS force sensitive resistors.

Design and Optimisation of a Microgripper: Demonstration of Biomedical Applications Using the Manipulation of Oocytes (2009)
Presentation / Conference Contribution
Solano, B., Gallant, A., & Wood, D. (2009, May). Design and Optimisation of a Microgripper: Demonstration of Biomedical Applications Using the Manipulation of Oocytes. Presented at DTIP 2009: SYMPOSIUM ON DESIGN, TEST, INTEGRATION AND PACKAGING OF MEMS/MOEMS, Rome, Italy

We present a bidirectional electrothermal microgripper for the advanced manipulation of single large cells. The device demonstrates excellent performance, and shows great potential as a supporting microtool for different biomedical procedures such as... Read More about Design and Optimisation of a Microgripper: Demonstration of Biomedical Applications Using the Manipulation of Oocytes.

Negative refracting materials at THz frequencies. (2008)
Presentation / Conference Contribution
Swift, G. P., Gallant, A. J., Dai, D., Kaliteevski, M. A., Brand, S., Zeze, D. A., Wood, D., Petty, M. C., Abram, R. A., & Chamberlain, J. M. (2008, December). Negative refracting materials at THz frequencies. Presented at 33rd International Conference on Infrared, Millimeter, and Terahertz Waves, Pasadena, CA

We demonstrate here, for the first time, the construction of artificial materials, which theoretically possess two separate pass-bands utilizing the difference between positive and negative refraction in the terahertz frequency regime. Experimental t... Read More about Negative refracting materials at THz frequencies..

Micromachined Terahertz Waveguides with Embedded Metal Rods (2008)
Presentation / Conference Contribution
Gallant, A., Baragwanath, A., Swift, P., Wood, D., & Chamberlain, M. (2008, December). Micromachined Terahertz Waveguides with Embedded Metal Rods. Presented at 33rd International Conference on Infrared, Millimeter, and Terahertz Waves, Pasadena, CA

In this paper we report on a novel fabrication approach for the manufacture of terahertz waveguides with embedded metal rods. It is anticipated that this type of structure could be used for sub-wavelength imaging or as a method to effectively couple... Read More about Micromachined Terahertz Waveguides with Embedded Metal Rods.

Poole-Frenkel conduction in single wall carbon nanotube composite films built up by electrostatic layer-by-layer deposition (2008)
Journal Article
Jombert, A., Coleman, K., Wood, D., Petty, M., & Zeze, D. (2008). Poole-Frenkel conduction in single wall carbon nanotube composite films built up by electrostatic layer-by-layer deposition. Journal of Applied Physics, 104(9), Article 094503. https://doi.org/10.1063/1.3006015

The fabrication of large area thin films of single wall carbon nanotubes (SWCNTs) using electrostatic layer-by-layer deposition is reported. The in-plane current versus voltage (I-V) characteristics were dependent on the concentration of SWCNTs trans... Read More about Poole-Frenkel conduction in single wall carbon nanotube composite films built up by electrostatic layer-by-layer deposition.

Thermal and mechanical analysis of an SU8 polymeric actuator using infrared thermography (2008)
Journal Article
Solano, B., Rolt, S., & Wood, D. (2008). Thermal and mechanical analysis of an SU8 polymeric actuator using infrared thermography. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 222(1), 73-86. https://doi.org/10.1243/09544062jmes676

In the current paper, report the detailed thermomechanical analysis of a polymeric thermal actuator integrated in a microelectromechanical systems microgripper, is reported. The inclusion of an actuator design which eliminates completely the parasiti... Read More about Thermal and mechanical analysis of an SU8 polymeric actuator using infrared thermography.

Flexible polymer based artificial materials for terahertz applications. (2007)
Presentation / Conference Contribution
Gallant, A., Zeze, D., Wood, D., Petty, M., Dai, D., & Chamberlain, J. (2007, December). Flexible polymer based artificial materials for terahertz applications. Presented at Joint 32nd International Conference on Infrared and Millimeter Waves, 2007 and the 2007 15th International Conference on Terahertz Electronics. IRMMW-THz., Cardiff, Wales

In this paper we report on the fabrication and testing of arrays of subwavelength apertures which are formed in a highly flexible polymer, PDMS (polydimethylsiloxane). PDMS can be elastically stretched to cause the deformation of any surface features... Read More about Flexible polymer based artificial materials for terahertz applications..

Passband filters for terahertz radiation based on dual metallic photonic structures (2007)
Journal Article
Gallant, A., Kaliteevski, M., Wood, D., Petty, M., Abram, R., Brand, S., …Chamberlain, J. (2007). Passband filters for terahertz radiation based on dual metallic photonic structures. Applied Physics Letters, 91(16), https://doi.org/10.1063/1.2800381

This paper reports on the development of two-dimensional metallic microstructures for the filtering of terahertz radiation. These structures are fabricated using ultraviolet-based processing of thick SU8 resist. This micromachining technique enables... Read More about Passband filters for terahertz radiation based on dual metallic photonic structures.

Free-standing polymer cantilevers and bridges reinforced with carbon nanotubes (2007)
Journal Article
Cadd, D., Wood, D., & Petty, M. (2007). Free-standing polymer cantilevers and bridges reinforced with carbon nanotubes. Micro and Nano Letters, 2(3), 54-57

A nanofabrication process, based on the layer-by-layer electrostatic deposition method, has been developed to fabricate free-standing cantilevers and bridges of polyelectrolytes containing conductive carbon nanotubes. The technique can produce a high... Read More about Free-standing polymer cantilevers and bridges reinforced with carbon nanotubes.

Terahertz Frequency Bandpass Filters (2007)
Journal Article
Gallant, A., Kaliteevski, M., Brand, S., Wood, D., Petty, M., Abram, R., & Chamberlain, J. (2007). Terahertz Frequency Bandpass Filters. Journal of Applied Physics, 102(2), https://doi.org/10.1063/1.2756072

The design, measurement, and analysis of a range of artificial materials for use at terahertz frequencies are described. The chosen structures consist of arrays of cylindrical gold-plated pillars with period comparable to the wavelength of incident r... Read More about Terahertz Frequency Bandpass Filters.

Conical recessed gold microelectrode arrays produced during photolithographic methods: characterisation and causes (2007)
Journal Article
Aguiar, F., Gallant, A., Rosamond, M., Rhodes, A., Wood, D., & Kataky, R. (2007). Conical recessed gold microelectrode arrays produced during photolithographic methods: characterisation and causes. Electrochemistry Communications, 9(5), 879-885. https://doi.org/10.1016/j.elecom.2006.11.023

In this work, surface imaging techniques such as scanning Kelvin nanoprobe (SKN), scanning electron microscopy (SEM) and white light interferometer microscopy show that conical recessed electrodes with gradient potential along the recessed walls are... Read More about Conical recessed gold microelectrode arrays produced during photolithographic methods: characterisation and causes.