• Following previous work on self-healing materials using porous building blocks, Rice materials scientist Rouzbeh Shahsavari and graduate student Sung Hoon Hwang made a wide range of porous particles between 150 and 550 nanometers in diameter -- thousands of times smaller than the thickness of a sheet of paper -- with pores about the width of a strand of DNA. (eurekalert.org)
  • This, Shahsavari said, was clear evidence of an intrinsic size effect where particles between 300 and 500 nanometers went from brittle to ductile, or pliable, even though they all had the same small pores that were 2 to 4 nanometers. (eurekalert.org)
  • While PSA 1090 has been designed with two lasers to resolve particles as small as 40 nanometers, PSA 1190 contains an additional third laser to cover the full measurement range of up to 2.5 millimeters. (anton-paar.com)
  • The dispersed-phase particles have a diameter between approximately 1 and 1000 nanometers. (wikipedia.org)
  • They found films made of larger particles approaching 500 nanometers were much tougher and the films and pellets less prone to cracking under pressure. (phys.org)
  • 7 . The polymeric particles of claim 1 , wherein the standardized, substantially uniform sizes are calibrated to a size ranging from about 1 to about 10,000 nanometers in diameter. (google.ca)
  • The present invention provides compositions comprising particles or agglomerates of one or more phosphorus oxide telomer or cotelomer ((co)telomer) of one or more unsaturated carboxylic acids or anhydrides having a mean average particle size of from 2 μm to 1 mm, preferably from 5 to 500 μm, preferably, comprising at least one carboxylic acid anhydride group. (freepatentsonline.com)
  • 1. A composition comprising particles or agglomerates of one or more phosphorus oxide telomer or cotelomer ((co)telomer) of one or more unsaturated carboxylic acids or anhydrides having a mean average particle size of from 2 μm to 1 mm. (freepatentsonline.com)
  • 2. The composition as claimed in claim 1, wherein the average particle size ranges from 5 μm up to 700 μm. (freepatentsonline.com)
  • There is often a need for a certain average particle size for the ensemble of particles. (wikipedia.org)
  • 1. A composition comprising a material having an average particle size of less than about 100 nm wherein the material, when heated to 700 C. for at least about 10 min, retains an average surface area of at least about 100 m 2 /g, the material comprising barium hexaaluminate. (google.com)
  • Sung Hoon Hwang et al, Intrinsic size-effect in scaffolded porous calcium silicate particles and mechanical behavior of their self-assembled ensembles, ACS Applied Materials & Interfaces (2017). (phys.org)
  • Chang L-T, Koutrakis P, Catalano PJ, Suh H (2000) Hourly personal exposures to fine particles and gaseous pollutants-results from Baltimore, Maryland. (springer.com)
  • Aperture size typically ranges from 20-2000 µm. (beckman.com)
  • Our technology measures and visualizes the rate and degrees of change in particle and droplet systems as they naturally exist in process. (mt.com)
  • It is also worth to explore the change in particle morphology over many reduction and oxygen cycles in CLC and CLR. (aiche.org)
  • 1.10.1 Soils containing fibrous peat that will change in particle size during the drying, washing, or sieving procedure. (astm.org)
  • They then assembled the particles into micron-sized sheets and pellets to see how well the arrays held up under pressure from a nanoindenter, which tests the hardness of a material. (eurekalert.org)
  • WASHINGTON--( BUSINESS WIRE )--Researchers have developed a microscope that can chemically identify individual micron-sized particles. (businesswire.com)
  • Researchers at the Massachusetts Institute of Technology (MIT) have built a portable yet powerful microscope capable of chemically identifying individual micron-sized particles. (photonicsonline.com)
  • Rice University materials scientists tested structures made of calcium-silicate nanoparticles and found that particles go from brittle to ductile as they increase in size. (phys.org)
  • More particularly, the present invention relates to densification of nanoparticles into micrometric particles. (gc.ca)
  • One of the primary limitations with nanoparticles is that nanoscale particles cannot be processed directly in many applications such as thermal spraying because of the extremely low density and flowability. (gc.ca)
  • It's fascinating that the most elusive and tiny particles can have such an effect on the universe. (thefutureofthings.com)
  • Most of the Martian atmosphere is composed of carbon dioxide, and in the winter, the poles get so cold - cold enough to freeze alcohol - that the gas condenses, forming tiny particles of snow. (innovations-report.com)
  • A method for measuring particle size using the apparatus described herein is also disclosed. (freepatentsonline.com)
  • Nanometer-sized particles have a wide variety of applications including the areas of magnetic materials, heterogeneous catalysts, toner compositions, and ceramics. (google.com)
  • Emulsions present a unique method to prepare nanometer-sized particles. (google.com)
  • This kind of downward particle transport is difficult to observe in the laboratory or in the field but it has important consequences for bioturbation rates and sediment geochemistry. (ingentaconnect.com)
  • Laboratory observations indicated that a large cirratulid polychaete, Cirriformia grandis , collected particles (glass beads) near the sediment surface and deposited them at depth. (ingentaconnect.com)
  • The new iC PVM software allows scientists to develop comprehensive process understanding of particle systems faster than ever before with simple and intuitive controls that facilitate the study of particle size, shape and concentration in real time without the need for training. (environmental-expert.com)
  • More particularly, the invention relates to pharmaceutical products, in particular easily handled and easily fluidized crystalline forms of salmeterol xinafoate, with controlled particle size and shape. (google.es)
  • Monitor process changes using simple analytics, or quantify particle size and shape with customized algorithms. (mt.com)
  • A second goal is to study the influence of the shape on the alignment by modelling particles as elliptic with varying aspect ratios. (tue.nl)
  • A final goal of the project is to investigate the influence of the size and shape of particles on the bulk rheology of suspensions. (tue.nl)
  • The mass, size, shape, and velocity of the ejecta varies depending on the initial shock conditions and the material properties of the target. (unt.edu)
  • 1.5 Typically, if the maximum particle size is equal to or less than the 4.75 mm (No. 4 sieve), then single-set sieving is applicable. (astm.org)
  • 1.9 This test method typically requires two or three days to complete, depending on the type and size of the sample and soil type. (astm.org)
  • There are a large number of methods for the determination of particle size, and it is important to state at the outset, that these different methods are not expected to give identical results: the size of a particle depends on the method used for its measurement, and it is important to choose that method for its determination which is relevant to its use. (wikipedia.org)
  • Ultracold, inert nitrogen can help reduce heat produced in the grinding process, resulting in high-quality, very fine, uniformly sized particles. (airproducts.com)
  • There was no consistent effect of speed on particle size in this group of cars, but there was a slight tendency toward larger particle sizes as the load increased. (sae.org)