Implementação de sistema para sonificação de microscopia de varredura por sonda

• Ano de defesa: 2018
• Autor(a) principal: Tiago Abreu Freitas
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Minas Gerais; UFMG
• Palavras-chave em Português: Engenharia elétrica; Microscopia
• Link de acesso: http://hdl.handle.net/1843/BUOS-B8VFDR

The present work aims at the development of scientic instrumentation in scanning probe microscopy (SPM), a eld of wide application and versatility that allows to explore surface properties at the atomic and molecular levels, oering the possibility of prospect new methods and control techniques. We propose to add a new methodology for the evaluation of the atomic force microscopy technique, using sonication of data in such a way that information on the available data and the physical process are included in an auditory feedback to the user. Typically, SPM systems provide information to the user with images that represent surface properties. In this work, a real-time data-sounding system was implemented that provided information that is not well captured by the human eye. Based on a Raspberry Pi 3B + board and Python algorithms, the proposed system generates parameters based on an SPM sweep for sonication that was tested using the MIDI (Musical Instrument Digital Interface) as the standard for sound reproduction of the converted sweep data. With the results obtained, it was possible to verify that the acquisition of data and the sound conversion in scanning time through the proposed system is feasible, which opens the possibility of more advanced applications, allowing to extract more detailed information of the scanning process via sound.Finally, this work allows the implementation of solutions that allow to explore the auditory capacity of people with visual impairment in the works that make use of this technology, in order to add more information and details to the process