Lisämateriaali Talventörröttäjät -tehtävään PaikkaOpissa.Helsingin yliopisto
Talventörröttäjät tehtävä on suunnattu 1.-2.-luokkalaisille monialaiseen ympäristöopin ja kuvataiteen opiskeluun.
http://www.paikkaoppi.fi/talventorrottajat/
Lisämateriaali Talventörröttäjät -tehtävään PaikkaOpissa.Helsingin yliopisto
Talventörröttäjät tehtävä on suunnattu 1.-2.-luokkalaisille monialaiseen ympäristöopin ja kuvataiteen opiskeluun.
http://www.paikkaoppi.fi/talventorrottajat/
Friction and wear are two key factors that are detrimental at the nanoscale, because they are linked with surface forces. It is important to understand their mechanisms and to find ways to overcome them. At the macroscale lubricant are classically used to do so and are well understood. However, those lubricants cannot be readily used at the nanoscale and other lubrication methods must be found. In this paper I will focus on two new potential lubricants that were tested in Microelectromechanical Systems (MEMS): ionic liquid films and alcohol vapor. They are both very different and are not used in the same situations but they both show great potential. In fact, thanks to the alcohol vapor lubricant a device did not show signs of wear after 11 days of operation, whereas it failed within minutes in the absence of alcohol. No signs of wear were seen after 100 cycles of operation of a device with ionic liquid film but were observed in an uncoated device.
From node.js to Scala - with a 100x performance boostItamar Ravid
Slides from my Scalapeno 2016 talk about BigPanda's journey from node.js to Scala on our core data processing service.
For more details - hit me up at @itrvd on Twitter.
Friction and wear are two key factors that are detrimental at the nanoscale, because they are linked with surface forces. It is important to understand their mechanisms and to find ways to overcome them. At the macroscale lubricant are classically used to do so and are well understood. However, those lubricants cannot be readily used at the nanoscale and other lubrication methods must be found. In this paper I will focus on two new potential lubricants that were tested in Microelectromechanical Systems (MEMS): ionic liquid films and alcohol vapor. They are both very different and are not used in the same situations but they both show great potential. In fact, thanks to the alcohol vapor lubricant a device did not show signs of wear after 11 days of operation, whereas it failed within minutes in the absence of alcohol. No signs of wear were seen after 100 cycles of operation of a device with ionic liquid film but were observed in an uncoated device.
From node.js to Scala - with a 100x performance boostItamar Ravid
Slides from my Scalapeno 2016 talk about BigPanda's journey from node.js to Scala on our core data processing service.
For more details - hit me up at @itrvd on Twitter.