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Direct copper bonded (DCB) alumina substrates are among sophisticated technical materials suitable for application in electronics, automotive and engineering industries…
Direct copper bonded (DCB) alumina substrates are among sophisticated technical materials suitable for application in electronics, automotive and engineering industries. DCB substrates resist very severe operational conditions and assure high reliability. This technology provides alumina substrates which are very strongly bonded to copper foil, due to the solidified eutectic alloy Cu2O‐Al2O3 or a suitable vitreous solder. Such substrates are ideal for the construction of elements in microelectronics hybrid circuits, power circuits and devices. As the bonding layer of a solidified eutectic or vitreous solder is very thin, the thermal resistivity stays sufficiently low; in addition, the dilatation properties of DCB substrates are close to those of silicon. This enables soldering of large silicon chips without the risk of creating mechanical stress and allows for the production of devices with very high construction effectivity. Examples of such applications are potential‐free modules, bridge circuits, automotive ignition modules and Peltier elements. The vitreous bonding layers are advantageous for certain applications. State‐of‐the‐art DCB bonding technology was developed for DCB aluminium nitride substrates, which have even better thermal qualities.
Dates: 29–31 May 1991 Venue: De Doelen Conference Centre, Rotterdam, The Netherlands The Benelux Chapter of the International Society for Hybrid Microelectronics will be…
Dates: 29–31 May 1991 Venue: De Doelen Conference Centre, Rotterdam, The Netherlands The Benelux Chapter of the International Society for Hybrid Microelectronics will be organising the 8th European Microelectronics Conference. The event will take place at ‘De Doelen’, Rotterdam, The Netherlands, from 29 to 31 May 1991.
This chapter describes the pivotal shift occurring in our national research psyche whereby Indigenous epistemology is increasingly recognised as both valid and enriching…
This chapter describes the pivotal shift occurring in our national research psyche whereby Indigenous epistemology is increasingly recognised as both valid and enriching. Two key contentions emerge from a description and discussion of this shift. First, ethics review bodies must evolve to incorporate a wider knowledge framework, one which conscientiously locates Indigenous knowledge and which empowers researchers to appropriately traverse Aotearoa New Zealand’s cultural terrain. The second contention argues that there are ethical responsibilities to address inequities, based on our shared Treaty partnership, and that ethics review bodies should instantiate consideration of inequities within their oversight roles. This chapter sets the scene by describing the current shift away from Western homogeneity to cultural diversity in education, noting the formal higher learning undertaken by Māori prior to colonisation, alongside current Māori educational achievement and the goal of success as Māori. The emerging recognition of mātauranga Māori (Indigenous epistemology) is exemplified by Ngā Pae o te Māramatanga and Vision Mātauranga. However, this shift has not yet reached all parts of the New Zealand research community, and we argue particularly so for ethics review processes. Possible solutions are posed, and four cultural markers are offered as supporting foundations for professionals in the field as they traverse epistemological landscapes that are more attuned to Indigenous realities.