Poster presentatiion, project Printing Makes Sense at Saxion Research Conference 2018, Deventer. Photonics is declared one of the key enabling technologies by the European Commission. Photonics finds its application in many fields ranging from health & well-being to smart industries. Automation in photonics manufacturing and packaging is key to reduce assembly costs. At the NanoPhysics Interface group, we investigate how to quickly couple light from one fiber to another fiber (or photonic devices). After developing a theoretical model and performing measurements, we find that the alignment is most critical in the lateral translations (x and y-direction) and that pre-alignment of the photonic components can be realized by a smart design of the chip holder
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De bever (Castor fiber) is in 1988 in Nederland geherintroduceerd. In het rivieren gebied de Gelderse Poort, waar de eerste bevers in 1994 zijn uitgezet, gaat de verspreiding van de populatie echter langzaam en over de exacte aantallen is niet veel bekend. Een intensieve monitoring was daarom gewenst. Het doel van dit onderzoek is een overzicht krijgen van de populatiegrootte, -structuur, ruimtelijke organisatie en het reproductiesucces van bevers in de Kekerdomse- en Millingerwaard in juli tot en met december 2009. Ook worden verschillende onderzoeksmethoden voor het verkrijgen van nauwkeurige data van een beverpopulatie besproken. Data werd vergaard met behulp van inventarisatie van beversporen in het gebied in combinatie met fotovallen en avondobservaties. Hiermee werden alle burchten en territoria in de waard in kaart gebracht.
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In the high-tech mechatronics world, aluminum and steel are well known materials, while carbon fiber is often neglected. In the RAAK project 'Composites in Mechatronics', the use of carbon fiber composites in mechatronics is investigated.
The production of denim makes a significant contribution to the environmental impact of the textile industry. The use of mechanically recycled fibers is proven to lower this environmental impact. MUD jeans produce denim using a mixture of virgin and mechanically recycled fibers and has the goal to produce denim with 100% post-consumer textile by 2020. However, denim fabric with 100% mechanically recycled fibers has insufficient mechanical properties. The goal of this project is to investigate the possibilities to increase the content of recycled post-consumer textile fibers in denim products using innovative recycling process technologies.
Carboxylated cellulose is an important product on the market, and one of the most well-known examples is carboxymethylcellulose (CMC). However, CMC is prepared by modification of cellulose with the extremely hazardous compound monochloracetic acid. In this project, we want to make a carboxylated cellulose that is a functional equivalent for CMC using a greener process with renewable raw materials derived from levulinic acid. Processes to achieve cellulose with a low and a high carboxylation degree will be designed.
Electrohydrodynamic Atomization (EHDA), also known as Electrospray (ES), is a technology which uses strong electric fields to manipulate liquid atomization. Among many other areas, electrospray is currently used as an important tool for biomedical applications (droplet encapsulation), water technology (thermal desalination and metal recovery) and material sciences (nanofibers and nano spheres fabrication, metal recovery, selective membranes and batteries). A complete review about the particularities of this technology and its applications was recently published in a special edition of the Journal of Aerosol Sciences [1]. Even though EHDA is already applied in many different industrial processes, there are not many controlling tools commercially available which can be used to remotely operate the system as well as identify some spray characteristics, e.g. droplet size, operational mode, droplet production ratio. The AECTion project proposes the development of an innovative controlling system based on the electrospray current, signal processing & control and artificial intelligence to build a non-visual tool to control and characterize EHDA processes.
