Fabrication techniques for developing a functional microfluidic glass device suitable for detection in optical spectroscopy system
Microfluidic devices offer the chance to manipulate and analyze fluids including bioassays and chemical reactions. In this study, a method to develop a microfluidic analysis system is proposed for detection of nanotubes by a Raman acquisition setup. Microchannels where fabricated in sodalime glass substrate by MeV ion beam lithography or electron beam lithography and wet etching. Fusion bonding (550 °C) was used to seal the microchannels. As a result a prototype microfluidic device with 1.6 µm deep channel that exhibit efficient sealing and suitable channel geometry was obtained. The microfluidic device was tested in a Raman spectroscopy detection system and the collected spectra showed the presence of carbon nanotubes within the channel with clear RBM and G-band peaks. By this approach a practical and simple fabrication technique for microfluidic devices combined with Raman spectroscopy was done. This device can be enhanced to perform concentration maps within the channel and further research can focus on performing steady constant fluid flow inside the channel. ...
MetadataShow full item record
- Pro gradu -tutkielmat 
Showing items with similar title or keywords.
Öçal, Süha (2019)Soda-lime glass is a commonly used, cheap and accessible material. Just like any other glass, it offers unique optical properties. Most of the incoming light is transmitted through the glass, which makes soda-lime an ...
Hussain, Junaid (2022)Nuclear catastrophes and accidents release harmful fission products containing long-lived (Se-79, Zr-93, Tc-99, Pd-107, Sn-126, I-129, and Cs-135) radioisotopes having half-life of hundreds of thousands or millions of years ...
Puttaraksa, Nitipon; Whitlow, Harry J.; Napari, Mari; Meriläinen, Leena; Gilbert, Leona (Springer, 2016)Simple and easy to use are the keys for developing lab-on-chip technology. Here, a new microfluidic circuit has been designed for an automatic lab-on-chip operation (ALOCO) device. This chip used capillary forces for ...
Pekkala, Ilkka (2013)We have successfully finalized the process of creating small microfluidic channels on glass chips, having 4 inlet/outlet holes for liquid flow. The fabricated channel structures can be as complex as electron beam lithography ...
Puttaraksa, Nitipon (University of Jyväskylä, 2011)