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Surface Science Newsletter – Issue 47
Determining surface cleanness quickly and on the go

Determining surface cleanness quickly and on the go

Time is money, and that also applies to industrial cleaning. As soon as a surface is clean, further cleaning is a waste of time. But how do you know when it is ready, considering that hydrophobic films of dirt are rarely visible? Looking into this matter, we cleaned steel plates in an ultrasonic bath using different dwell times and determined the surface free energy in each case. This enabled us to make visible what the eye could not see. Once the cleaning process was optimized in this way, the cleanness can be checked in seconds during regular quality monitoring with one-click measurements in the form of an “OK” or “Not OK” result.”

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Product
Mobile and with just one click: Quality control of cleaning and coating baths

Mobile and with just one click: Quality control of cleaning and coating baths

Immerse – click – read out: Our new Bubble Pressure Tensiometer – BPT Mobile is an instrument for capturing the surfactant content using dynamic surface tension. It provides results within seconds without the need for an external power supply or a computer and therefore is particularly suitable for regular quality control. The dynamic surface tension responds sensitively to changes in surfactant concentration so that bubble pressure measurements with the BPT Mobile reliably reflect the quality of a bath.

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Video
Watch the performance of our BPT Mobile
Watch the performance of our BPT Mobile

Quality control of cleaning and coating baths with a click: See how easy it can be to carry our precise measurements of the dynamic surface tension.

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Beyond the surface
A soccer pitch in one gram of substance
Photo: Dr. I. Senkovska, TU Dresden

A soccer pitch in one gram of substance

If there were a World Cup for the development of porous materials, the trophy this year would go to the Technical University Dresden (Germany). Here, researchers have synthesized a crystalline material with the largest internal surface yet achieved. The metal organic compound, which was developed with the help of computer simulations, has a specific surface area of 7,800 m²/gram – in total, all the internal surface areas of a single gram of substance therefore approximate to that of a standard soccer pitch. Research in the field of extreme porosity is targeted toward the storage of large quantities of gases or liquids inside the material – for example, to bind pollutants. For this purpose, the airy structures must be sufficiently mechanically stable so as to not be destroyed during the adsorption process. This is exactly what the scientists have achieved with the new substance.

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Magnetic liquids: new avenues for 3D printing

Magnetic liquids: new avenues for

3D printing

As with so many high-tech developments, it started with space travel: The first ferrofluid was a rocket fuel which was to be pumped magnetically in zero gravity. In the meantime, the contactless transportation of magnetic liquids is being used on a massive scale in the electronics and pharmaceutical industries and the potential for 3D printing is currently being investigated. In this area, the wetting properties of the liquid in the magnetic field are a decisive factor for the quality of print reproduction. This was the starting point for Dr. Waghmare, our partner at the University of Alberta (Canada) and his team to investigate in depth the behavior of ferrofluid drops with changing magnetic field strength and direction. The researchers expect that this knowledge can be used to expand existing technical boundaries in 3D printing and other technologies.

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Company
KRÜSS officially launches partnership with Western Washington University
Photo: Bobak Ha'Eri
KRÜSS officially launches partnership with Western Washington University

In September of 2018, representatives of KRÜSS and Western Washington University (Bellingham, WA, USA) came together in collaboration to support the education of new engineers in the rapidly-growing field of composites manufacturing. This collaboration allows Western Washington University students the opportunity to work with our state-of-the-art instrumentation and technology during their time within the Plastics & Composites Engineering program.

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Events
Focus seminar with Dr. Kash Mittal

Secure yourself a place for our seminar on adhesion with Dr. Kash Mittal

In spring 2019 our focus seminar Course on Adhesion Science and Technology with adhesion expert Dr. Kash Mittal will take place again.

We are very glad to invite you to our Applications & Science Center in Hamburg from March 25-26, 2019.
Seminar registration
Meet us at international conferences and exhibitions

Meet us at international conferences and exhibitions

We look forward to demonstrating our innovative technology in the field of interfacial analysis and meeting you at the following events:

  • ISRANALYTICA | Jan 22-23 | Tel Aviv, Israel
  • SEMICON KOREA | Jan 23-25 |  Seoul, Korea
  • AS 42nd Annual Meeting | Feb 17-20 | 
    Hilton Head, SC, USA

Check out our events page to find out about all the fairs and conferences we will be attending in the coming months.