[
    {
        "id": "authors:rqxqj-yd609",
        "collection": "authors",
        "collection_id": "rqxqj-yd609",
        "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170822-070843697",
        "type": "article",
        "title": "Elastic and thermal properties of free-standing molybdenum disulfide membranes measured using ultrafast transient grating spectroscopy",
        "author": [
            {
                "family_name": "Kim",
                "given_name": "Taeyong",
                "clpid": "Kim-Taeyong"
            },
            {
                "family_name": "Ding",
                "given_name": "Ding",
                "clpid": "Ding-Ding"
            },
            {
                "family_name": "Yim",
                "given_name": "Jong-Hyuk",
                "clpid": "Yim-Jong-Hyuk"
            },
            {
                "family_name": "Jho",
                "given_name": "Young-Dahl",
                "clpid": "Jho-Young-Dahl"
            },
            {
                "family_name": "Minnich",
                "given_name": "Austin J.",
                "orcid": "0000-0002-9671-9540",
                "clpid": "Minnich-A-J"
            }
        ],
        "abstract": "Molybdenum disulfide (MoS_2), a member of transition-metal dichalcogenide family, is of intense interest due to its unique electronic and thermoelectric properties. However, reports of its in-plane thermal conductivity vary due to the difficulty of in-plane thermal conductivity measurements on thin films, and an experimental measurement of the in-plane sound velocity has not been reported. Here, we use time-resolved transient grating spectroscopy to simultaneously measure the in-plane elastic and thermal properties of free-standing MoS_2 membranes at room temperature. We obtain a longitudinal acoustic phonon velocity of 7000 \u00b1 40 m s^(\u22121) and an in-plane thermal conductivity of 74 \u00b1 21 W m^(\u22121)K^(\u22121). Our measurements provide useful insights into the elastic and thermal properties of MoS_2 and demonstrate the capability of transient grating spectroscopy to investigate the in-plane vibrational properties of van der Waals materials that are challenging to characterize with conventional methods.",
        "doi": "10.1063/1.4999225",
        "issn": "2166-532X",
        "publisher": "American Institute of Physics",
        "publication": "APL Materials",
        "publication_date": "2017-08",
        "series_number": "8",
        "volume": "5",
        "issue": "8",
        "pages": "Art. No. 086105"
    },
    {
        "id": "authors:x0cj2-sh952",
        "collection": "authors",
        "collection_id": "x0cj2-sh952",
        "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150427-095909805",
        "type": "article",
        "title": "Selective Radiative Heating of Nanostructures Using Hyperbolic Metamaterials",
        "author": [
            {
                "family_name": "Ding",
                "given_name": "Ding",
                "clpid": "Ding-Ding"
            },
            {
                "family_name": "Minnich",
                "given_name": "Austin J.",
                "orcid": "0000-0002-9671-9540",
                "clpid": "Minnich-A-J"
            }
        ],
        "abstract": "Hyperbolic metamaterials (HMM) are of great interest due to their ability to break the diffraction limit for imaging and enhance near-field radiative heat transfer. Here we demonstrate that an annular, transparent HMM enables selective heating of a sub-wavelength plasmonic nanowire by controlling the angular mode number of a plasmonic resonance. A nanowire emitter, surrounded by an HMM, appears dark to incoming radiation from an adjacent nanowire emitter unless the second emitter is surrounded by an identical lens such that the wavelength and angular mode of the plasmonic resonance match. Our result can find applications in radiative thermal management.",
        "doi": "10.1364/OE.23.00A299",
        "issn": "1094-4087",
        "publisher": "Optical Society of America",
        "publication": "Optics Express",
        "publication_date": "2015-04-06",
        "series_number": "7",
        "volume": "23",
        "issue": "7",
        "pages": "A299-A308"
    },
    {
        "id": "authors:qtzd5-4y603",
        "collection": "authors",
        "collection_id": "qtzd5-4y603",
        "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141110-143729775",
        "type": "article",
        "title": "Length Dependent Thermal Conductivity Measurements Yield Phonon Mean Free Path Spectra in Nanostructures",
        "author": [
            {
                "family_name": "Zhang",
                "given_name": "Hang",
                "clpid": "Zhang-Hang"
            },
            {
                "family_name": "Hua",
                "given_name": "Chengyun",
                "orcid": "0000-0003-3587-8342",
                "clpid": "Hua-Chengyun"
            },
            {
                "family_name": "Ding",
                "given_name": "Ding",
                "clpid": "Ding-Ding"
            },
            {
                "family_name": "Minnich",
                "given_name": "Austin J.",
                "orcid": "0000-0002-9671-9540",
                "clpid": "Minnich-A-J"
            }
        ],
        "abstract": "Thermal conductivity measurements over variable lengths on nanostructures such as nanowires provide important information about the mean free paths (MFPs) of the phonons responsible for heat conduction. However, nearly all of these measurements have been interpreted using an average MFP even though phonons in many crystals possess a broad MFP spectrum. Here, we present a reconstruction method to obtain MFP spectra of nanostructures from variable-length thermal conductivity measurements. Using this method, we investigate recently reported length-dependent thermal conductivity measurements on SiGe alloy nanowires and suspended graphene ribbons. We find that the recent measurements on graphene imply that 70% of the heat in graphene is carried by phonons with MFPs longer than 1 micron.",
        "doi": "10.1038/srep09121",
        "pmcid": "PMC4357850",
        "issn": "2045-2322",
        "publisher": "Nature Publishing Group",
        "publication": "Scientific Reports",
        "publication_date": "2015-03-13",
        "series_number": "3",
        "volume": "5",
        "issue": "3",
        "pages": "Art. No. 9121"
    }
]