Βεσιδεσ χοντινυινγ εφφορτ ιν δεϖελοπινγ ΜΕΜΣ−βασεδ mανυφαχτυρινγ τεχηνιθυεσ, λατεστ εφφορτ ιν Μιχρο−mανυφαχτυρινγ ισ αλσο ιν Νον−ΜΕΜΣ−βασεδ mανυφαχτυρινγ. Ρεσεαρχη ανδ τεχηνολογιχαλ δεϖελοπmεντ (ΡΤD) ιν τηισ φιελδ ισ ενχουραγεδ βψ τηε ινχρεασεδ δεmανδ ον mιχρο−χοmπονεντσ ασ ωελλ ασ προmισεδ δεϖελοπmεντ ιν τηε σχαλινγ δοων οφ τηε τραδιτιοναλ mαχρο−mανυφαχτυρινγ προχεσσεσ φορ mιχρο−λενγτη−σχαλε mανυφαχτυρινγ. Τηισ παπερ ηιγηλιγητσ σοmε ΕΥ φυνδεδ ρεσεαρχη αχτιϖιτιεσ ιν mιχρο/νανο−mανυφαχτυρινγ, ανδ γιϖεσ εξαmπλεσ οφ τηε λατεστ δεϖελοπmεντ ιν mιχρο−mανυφαχτυρινγ mετηοδσ/τεχηνιθυεσ, προχεσσ χηαινσ, ηψβριδ− προχεσσεσ, mανυφαχτυρινγ εθυιπmεντ ανδ συππορτινγ τεχηνολογιεσ/δεϖιχε, ετχ., ωηιχη ισ φολλοωεδ βψ α συmmαρψ οφ τηε αχηιεϖεmεντσ οφ τηε ΕΥ ΜΑΣΜΙΧΡΟ προϕεχτ. Φιναλλψ, χονχλυδινγ ρεmαρκσ αρε γιϖεν, ωηιχη ραισε σεϖεραλ ισσυεσ χονχερνινγ φυρτηερ δεϖελοπmεντ ιν mιχρο−mανυφαχτυρινγ.

To meet challenges towards miniaturisation, a new generation of moulding machines that use a separate screw plastication unit and a plunger injection system has been developed for fabrication of microcomponents down to milligram levels. In the present paper, studies have been carried out on micro tool designs to develop micromoulds that can meet the demand of the new machines. Micromoulding process studies were conducted using a Battenfeld Microsystem micromoulding machine with a maximum injection capacity of 1 cm3. It was found that for diVerent polymer materials and product designs, diVerent runner systems and mould structures need to be employed for improved melt ow and cavity ll. The runner weight was found to be signi cantly aVected by the metering setting, especially when over metered settings were used. Control of the part weight however was more complicated and involved other processing parameters such as injection speed and mould temperature.PRC/1898

A significant enhancement in the thermoelectric performance was observed for three-dimensional conducting aerogels, which were obtained from poly(3,4-ethylenedioxythiophene) : poly(4-styrenesulfonic) (PEDOT:PSS) and multiwalled carbon nanotubes (MWCNTs) suspensions by adding different concentrations of metallic silver (Ag). It was found that the electrical conductivity and Seebeck coefficient could be simultaneously increased with the unique structure. Moreover, the conducting aerogels have an ultralow thermal conductivity (0.06 W m −1 K −1 ) and a large Brunauer-Emmett-Teller surface area (228 m 2 g −1 ). The highest figure of merit (zT) value in this study was 7.56×10 −3 at room temperature upon the addition of 33.32 wt.% Ag. Although the zT value was too low, our work may provide new insights into the design and development of the thermoelectric material for applications. Further investigation with PEDOT:PSS aerogels will be continued to get an economical, lightweight, and efficient polymer thermoelectric material.

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