Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/71215
Título: | High-aspect ratio Si neural shafts: fabrication and brain implantation |
Autor(es): | Gonçalves, Sandra Beatriz Tomé Loureiro, A. M. Fernandes, H. C. Pimenta, Sara Filomena Ribeiro Ribeiro, J. F. Correia, J. H. |
Palavras-chave: | Biosensors Blade cutting IC-compatible manufacturing Mechanical implantation High-aspect ratio devices 2D neural silicon shafts |
Data: | Dez-2018 |
Editora: | IEEE |
Revista: | Journal of Microelectromechanical Systems |
Resumo(s): | This paper presents a simple micromachining process to fabricate 2-D devices consisting of up to 20-mm-long shafts for neural applications. The manufacturing technology was mainly based on traditional blade dicing, normally used for wafers individualization into chips/devices in semiconductor and micro-electro-mechanical systems technologies. Here, it is demonstrated how a fully mechanical cutting technology is applied to the successful manufacture of challenging components with high-aspect ratio devices up to 41:1. Several other aspect ratio shafts (lengths varying between 5 and 20 mm) were produced and tested, for both the single-shaft and array devices. Mechanical characterization tests evaluated the devices robustness. Compressive strength tests for single-shaft 20-mm long shafts showed good longitudinal resistance to fracture, withstanding 28 N before breaking. Longitudinal forces play the key role while implanting the shaft inside the brain. Moreover, it was measured the load required to implant and extract 20-mm five-shaft array devices in two different mediums: 0.6% agar gel and calf cadaver brain. Maximum average insertion forces were 23 and 59 mN per shaft at 180 mm.min(-1) for agar and cadaver brain mediums, respectively. Overall, by enhancing the performance of a purely mechanical machining tool, the micro manufacture of high-aspect ratio silicon shafts for neuroscience applications was demonstrated. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/71215 |
DOI: | 10.1109/JMEMS.2018.2868229 |
ISSN: | 1057-7157 |
e-ISSN: | 1948-0158 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CMEMS - Artigos em revistas internacionais/Papers in international journals |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
SBG_JMEMS.pdf Acesso restrito! | 754,18 kB | Adobe PDF | Ver/Abrir |