Characterization of copper microelectrodes, following a homemade lithography, technique, and gold electroless deposition
Сохранить в:
| Главный автор: | |
|---|---|
| Дата публикации: | 2016 |
| Другие авторы: | , , , , , , , |
| Формат: | Article |
| Язык: | eng |
| Источник: | Repositório Institucional da UnB |
| Download full: | http://repositorio.unb.br/handle/10482/30363 http://dx.doi.org/10.1590/S1517-707620160001.0023 |
Итог: | We report the fabrication and characterization of copper microelectrodes obtained by a homemade lithography technique and after gold electroless deposition. For the fabrication, planes consisting of arrays of electrodes (black in color) with bow tie shape were designed and printed on a transparent paper (Canson ltd.). Using an embroidery frame with a silk fabric, a photographic emulsion was spread on the silk and simultaneously pressing the Canson paper on it. The system was introduced into a closed box and exposed with a UV light. The designed electrode templates prevented direct exposition of the UV light over copper films and indelible ink was spread over it. After the ink was dried, the copper film is immersed into ferric acid to attack the uncovered copper parts (where there is no ink). In this way, we obtained copper electrodes with initial gap separation of ~142μm and subsequently, they followed electroless deposition of gold to make the copper electrodes to contact. For the characterization, electrical measurements were performed. They present ohmic resistance values in the order of 106 Ω produced by surface scattering of the electrons within the gold microwire and enhanced by oxidation of the copper electrodes. |
Схожие документы: Characterization of copper microelectrodes, following a homemade lithography, technique, and gold electroless deposition
- Prospectivity analysis of gold and iron oxide copper-gold-(silver) mineralizations from the Faina Greenstone Belt, Brazil, using multiple data sets
- The hydrothermal footprint of the Crixas deposit : new vectors for orogenic gold exploration in central Brazil
- Combination of techniques to control invasive grasses and restore Brazilian savannah : steps to achieve large-scale restoration
- Resposta eletromagnética e magnética do Depósito IOCG (Iron Oxide Copper Gold) Cristalino, Província Mineral de Carajás, Pará, Brasil
- Síntese, caracterização e aplicação de derivados carboxilados de celulose
- Oxidation of Cylindrospermopsin by Fenton process : a bench-scale study of the effects of dose and ratio of H2O2 and Fe(II) and kinetics