Latest Wetting Stories

2011-02-09 13:12:40

Discovery of mini 'water hammer' effect could lead to materials that water really hates Researchers from Northwestern University and the Massachusetts Institute of Technology (MIT) have studied individual water droplets and discovered a miniature version of the "water hammer," an effect that produces the familiar radiator pipe clanging in older buildings. In piping systems, the water hammer occurs when fluid is forced to stop abruptly, causing huge pressure spikes that can rupture pipe walls....

2011-01-08 11:24:23

Surprising discovery about biofilm may provide a new direction in antimicrobial research and bio-inspired liquid-repellent surfaces for use in healthcare, agriculture and industryBy rethinking what happens on the surface of things, engineers at Harvard University have discovered that Bacillus subtilis biofilm colonies exhibit an unmatched ability to repel a wide range of liquids"”and even vapors.Centimeters across yet only hundreds of microns thick, such slimy bacterial coatings cling...

2010-02-26 07:36:37

Could lead to design of water-shedding materials for applications in energy, medicine, and more Scientists at the U.S. Department of Energy's Brookhaven National Laboratory have obtained the first glimpse of miniscule air bubbles that keep water from wetting a super non-stick surface. Detailed information about the size and shape of these bubbles "” and the non-stick material the scientists created by "pock-marking" a smooth material with cavities measuring mere billionths of a meter...

2009-10-26 09:07:42

What do spore-launching mushrooms have in common with highly water-repellant surfaces? According to Duke University engineers, the answer is "jumping" water droplets. As it turns out, the same phenomenon that occurs when it's time for certain mushrooms to eject spores also occurs when dew droplets skitter across a surface that is highly water repellant, or superhydrophobic. Using a specially designed high-speed camera and microscope set-up, the engineers for the first time captured the...

2008-07-24 03:00:47

By Xu, Jing Liu, Xingbo; Bright, Mark A; Hemrick, James G; Sikka, Vinod; Barbero, Ever The reactive wetting behaviors of MSA2020, an Fe-based superalloy, and 316L stainless steel in contact with a molten Zn-Al alloy were investigated by the sessile drop method. This investigation led to the following findings. (1) 316L not only suffered considerable wetting, but also reacted with the molten Zn- Al alloy at a higher rate than MSA2020. (2) The contact angle of MSA2020 wet by the molten Zn-Al...

2007-12-18 06:00:00

By Hwang, Chin-yin Hse, Chung-yun; Shupe, Todd F Abstract This study examined the effects of a compatibilizer on the wettability of birch plywood and polyolefins. The compatabilizer was a low molecular weight emulsion type maleated polypropylene (MAPP), Epolene E-43. The polyolefins investigated included low- density polyethylene (LDPE), linear low-density polyethylene (LLDPE), and polypropylene (PP). For E-43 treated wood surfaces, contact angles among four wetting liquids were in the order...

2006-12-12 03:00:27

By Fok, Wing Y; Hild, Debra N; Petrick, Lauren M; Obendorf, S Kay Abstract Spin finishes, including lubricants, emulsifiers, antistatic agents, and wetting agents are used to facilitate the manufacturing and processing of textiles. Autoxidation of ten spin finish components was studied by subjecting them to air and heat over time. Chemical changes were observed visually and evaluated using UV/Vis spectroscopy, viscosity measurements, and Fourier Transform infrared (FTIR) spectroscopy....

Word of the Day
  • A murmuring sound; a rushing or whistling sound, like that of the wind; a deep sigh.
  • A gentle breeze; a waft; a breath.
  • Any rumor that engages general attention.
  • A cant or whining mode of speaking, especially in preaching or praying; the chant or recitative characteristic of the old Presbyterians in Scotland.
  • To make a rushing, whistling, or sighing sound; emit a hollow murmur; murmur or sigh like the wind.
  • To breathe in or as in sleep.
  • To utter in a whining or monotonous tone.
According to the OED, from the 16th century, this word is 'almost exclusively Scots and northern dialect until adopted in general literary use in the 19th.'