Gustavo F Trindade
University of Nottingham
Understanding how multi-materials interact: Novel multiscale chemical and physical analysis techniques for multifunctional AM
Additive Manufacturing is nowadays employed in a wide range of fields with continuous development in terms of geometrical complexity. However, in addition to exploiting geometry, our multi-institutional and multi-industry project seeks to augment these products three-dimensional functionality through the co-deposition of both functional and structural materials contemporaneously. These functions can be, for example, electronic, biological and pharmaceutical and can be incorporated through a variety of novel processes such as piezo ink-jetting and UV-sintering/curing of metal nanoparticles/polymers, novel drop-on-demand jetting of high-temperature metals and multi-photon nanolithography of nano-composite materials.
A primary concern with regards to enabling multi-material, multi-functional AM is the difficulty of inter and intra layer coalescence/bonding between materials due to differences in physical state, chemistry and temperature at deposition or conversion. To better understand this, we are developing a suite of ex-situ materials interface analysis methods capable of delivering a complete 3D characterisation of samples at the micro/nano spanning a wide range of analytical spot sizes (spatial resolution) and chemical specificity.
We will present recent developments and current challenges on materials interface characterisation in the context of multi-material AM. These involve specific methods for analytical techniques such as focused ion beam for scanning/transmission electron microscopy (FIB-SEM, STEM), time-of-flight and orbitrap secondary ion mass spectrometry (orbi-SIMS and ToF-SIMS), atomic force microscopy (AFM), confocal Raman microscopy and X-ray photoelectron spectroscopy (XPS).
Dr Gustavo F Trindade is a Research Fellow at University Nottingham’s Centre for Additive Manufacturing and The Advanced Materials and Healthcare Technologies Division of the School of Pharmacy. Gustavo’s main area of expertise is on the physico-chemical characterisation of materials with more than 30 papers published. He earned his BSc and MSc in Physics from the University of Sao Paulo (2011, 2013) where he worked with ion beam analysis of polymer materials modified for biocompatibility. He then earned his PhD in Materials Science from the University of Surrey (2018), working mainly with secondary ion mass spectrometry with a focus on multivariate statistical data analysis to solve various industry-related problems such as surface plasma treatment of automotive grade polymers, food packaging adhesives and polyester coatings. Gustavo now works mainly on the development of analytical methods for the micro/nano scale study of materials interface in multi-material, multi-functional AM with applications in the electronics and pharmaceutical industries.
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