Wittbracht et al. [1] proposed a technique to assemble highly ordered monolayers of magnetic beads utilizing rotating magnetic fields. The magnetic beads align their magnetization with any applied magnetic field. As long as this field is homogeneous, the particles will only interact with each other. As their magnetic moments are all facing the same direction, they will attract each other if the...

Aerosols and new particle formation were studied in the western part of the Yangtze River Delta (YRD) at the Station for Observing Regional Processes of the Earth System, Nanjing University (SORPES-NJU). Air ions in the diameter range 0.8–42 nm were measured using an air ion spectrometer, and a differential mobility particle sizer (DMPS) provided particle number size distributions between 6 and...

silver-polyaniline (ag-pani) nanocomposites were prepared by in-situ oxidative polymerization of aniline monomer in sodium bis(2-ethylhexyl) sulfosuccinate (aot) solution as an emulsifier. the synthesis of silver-polyaniline nanocomposites was investigated as a function of several parameters such as aniline concentration, concentration of emulsifier (aot), concentration of oxidation agent and c...

New particle formation is of interest because of its influence on the properties of aerosol population, and due to the possible contribution of newly formed particles to cloud condensation nuclei. Currently no conclusive evidence exists as to the mechanism or mechanisms of nucleation and subsequent particle growth. However, nucleation 5 rates exhibit a clear dependence on ambient sulphuric acid...

We analysed 184 formation events of new atmospheric aerosol particles, observed at a boreal forest site in Hyytiälä, southern Finland. Recognition, selection and classification of the formation events was based on continuous experimental size distribution data for submicron particles from a period 31 January 1996–18 September 1999 (1327 days). The formation events were classified, and their cha...

In a standard theory of the formation planets in our Solar System, terrestrial and cores gas giants are formed through accretion kilometer-sized objects (planetesimals) protoplanetary disk. Gravitational $N$-body simulations disk system made up numerous planetesimals most direct way to study process. However, use has been limited idealized models (e.g. perfect accretion) and/or narrow spatial r...

The detailed mechanism of secondary new particle formation in the atmosphere is still under debate. It is proposed that particle formation happens via activation of 1–2 nm atmospheric neutral molecular clusters and/or large molecules. Since traditional instrumentation does not reach these sizes, the hypothesis has not yet been verified. By directly measuring particle size distributions down to ...

Particle generation in thermal chemical vapor deposition ~CVD! processes can lead to the formation of contaminant particles that affect film properties and eventually device performance. This article reports on measurements of particle formation during low-pressure CVD of SiO2 from silane and oxygen. Measurements of aerosol size distributions were made using a particle beam mass spectrometer ~P...