Physics of hard spheres experiment-2 (PHSE-2)

P. M. Chaikin, W. B. Russel, M. T. Sullivan, A. D. Hollingsworth, A. van Blaaderen, W. V. Meyer, M. P. Doherty, A. H. Resnick

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The Physics of Hard Spheres Experiment-2 (PHASE-2) seeks to answer fundamental questions about how model atoms change their behavior as more and more neighbors are moved into their neighborhood. The PHASE-2 experiment will use an enhanced microscope to observe colloidal particles crowded in a liquid phase make the transition to a solid phase. In the absence of gravitational masking, we can observe natural phase transitions, and the effects of aiding or frustrating these phase transitions. This allows us to gain an understanding of material behavior that lies at the core of how fundamental material properties manifest in the atomic world. When we increase the number of uniformly sized hard sphere particles in a volume or equivalently look at identical colloidal particles in a large number of sample cells spanning a range of concentrations (volume fractions), we see a fluid go from a liquid phase, to coexisting phases, to a crystalline phase, and with further crowding on earth to a glassy phase. While dendritic growth is not observed for hard spheres on earth, and the glass transition is, the opposite behavior is seen in experiments in microgravity. We intend to find out why by studying and actively manipulating specially coated particles that behave as hard spheres and therefore are only affected by configurational entropy. Choosing a particle size comparable to the wavelength of light selects the timescale of the experiment and permits us to observe model atoms with a microscope. Working in a size range that allows both microscopic and mesoscopic manipulation and control of the samples allows us to probe the essential features of the hard sphere disorderorder transition and the properties of the ordered solid phase that results.

    Original languageEnglish (US)
    Title of host publication2001 Conference and Exhibit on International Space Station Utilization
    StatePublished - 2001
    Event2001 Conference and Exhibit on International Space Station Utilization - Cape Canaveral, FL, United States
    Duration: Oct 15 2001Oct 18 2001

    Other

    Other2001 Conference and Exhibit on International Space Station Utilization
    CountryUnited States
    CityCape Canaveral, FL
    Period10/15/0110/18/01

    Fingerprint

    physics
    Physics
    experiment
    Experiments
    phase transition
    solid phases
    liquid phases
    Microscopes
    Phase transitions
    Earth (planet)
    microscopes
    Atoms
    liquid
    crowding
    Microgravity
    Liquids
    masking
    microgravity
    range size
    entropy

    ASJC Scopus subject areas

    • Space and Planetary Science
    • Electrical and Electronic Engineering

    Cite this

    Chaikin, P. M., Russel, W. B., Sullivan, M. T., Hollingsworth, A. D., van Blaaderen, A., Meyer, W. V., ... Resnick, A. H. (2001). Physics of hard spheres experiment-2 (PHSE-2). In 2001 Conference and Exhibit on International Space Station Utilization

    Physics of hard spheres experiment-2 (PHSE-2). / Chaikin, P. M.; Russel, W. B.; Sullivan, M. T.; Hollingsworth, A. D.; van Blaaderen, A.; Meyer, W. V.; Doherty, M. P.; Resnick, A. H.

    2001 Conference and Exhibit on International Space Station Utilization. 2001.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Chaikin, PM, Russel, WB, Sullivan, MT, Hollingsworth, AD, van Blaaderen, A, Meyer, WV, Doherty, MP & Resnick, AH 2001, Physics of hard spheres experiment-2 (PHSE-2). in 2001 Conference and Exhibit on International Space Station Utilization. 2001 Conference and Exhibit on International Space Station Utilization, Cape Canaveral, FL, United States, 10/15/01.
    Chaikin PM, Russel WB, Sullivan MT, Hollingsworth AD, van Blaaderen A, Meyer WV et al. Physics of hard spheres experiment-2 (PHSE-2). In 2001 Conference and Exhibit on International Space Station Utilization. 2001
    Chaikin, P. M. ; Russel, W. B. ; Sullivan, M. T. ; Hollingsworth, A. D. ; van Blaaderen, A. ; Meyer, W. V. ; Doherty, M. P. ; Resnick, A. H. / Physics of hard spheres experiment-2 (PHSE-2). 2001 Conference and Exhibit on International Space Station Utilization. 2001.
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    AU - Russel, W. B.

    AU - Sullivan, M. T.

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    AU - van Blaaderen, A.

    AU - Meyer, W. V.

    AU - Doherty, M. P.

    AU - Resnick, A. H.

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