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Scanning Thermal Microscopy on 2D Materials at cryogenic temperatures

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Scanning Thermal Microscopy on 2D Materials at cryogenic temperatures. / Evangeli, Charalambos; Spiece, Jean; Robson, Alexander James; Kay, Nicholas; Kolosov, Oleg Victor.

2017. Abstract from MMC2017, Manchester, United Kingdom.

Research output: Contribution to conference - Without ISBN/ISSN Abstract

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@conference{62f9558d4a194e3587175e9934fe613f,
title = "Scanning Thermal Microscopy on 2D Materials at cryogenic temperatures",
abstract = "Thermal transport in Graphene is of great interest due to its high thermal conductivity, for both fundamental research and future applications such as heat dissipation in electronic devices. Although, the thermal conductivity of graphene can reduce depending on the coupling to the substrate [1]. In this work, we report high-resolution imaging of nanoscale thermal transport in single and few layers of Graphene on Silicon Oxide (SiO2) and hexagonal Boron Nitride (hBN), by Scanning Thermal Microscopy (SThM) in high vacuum. SThM is a leading technique for mapping thermal properties with nanoscale resolution [2], consisting of a self-heated probe which acts as a thermosensor during sample scanning. By using doped Si probes and cooling the sample down to 150K,we mapped the thermal resistance of Graphene layers on SiO2 and hBN with sub-10nm resolution. We observed that thermal transport in these layers changes at the elastically deformed areas, which were formed during deposition in the form of bubbles [3]. More specifically, the thermal conductance at the center of the bubbles increases with their surface area. In addition, we study the effect of the sample temperature and the substrate on the thermal conductance of the graphene layers.",
keywords = "scanning thermal microscopy, SThM, nanoscale heat transport, cryogenic SThM, nanometarials, 2D materials, graphene, hBN, boron nitride",
author = "Charalambos Evangeli and Jean Spiece and Robson, {Alexander James} and Nicholas Kay and Kolosov, {Oleg Victor}",
year = "2017",
month = jul,
day = "3",
language = "English",
note = "MMC2017 : Microscience and Microscopy Congress 2017, mmc2017 ; Conference date: 03-07-2017 Through 06-07-2017",
url = "https://mmc-series.org.uk/conference",

}

RIS

TY - CONF

T1 - Scanning Thermal Microscopy on 2D Materials at cryogenic temperatures

AU - Evangeli, Charalambos

AU - Spiece, Jean

AU - Robson, Alexander James

AU - Kay, Nicholas

AU - Kolosov, Oleg Victor

PY - 2017/7/3

Y1 - 2017/7/3

N2 - Thermal transport in Graphene is of great interest due to its high thermal conductivity, for both fundamental research and future applications such as heat dissipation in electronic devices. Although, the thermal conductivity of graphene can reduce depending on the coupling to the substrate [1]. In this work, we report high-resolution imaging of nanoscale thermal transport in single and few layers of Graphene on Silicon Oxide (SiO2) and hexagonal Boron Nitride (hBN), by Scanning Thermal Microscopy (SThM) in high vacuum. SThM is a leading technique for mapping thermal properties with nanoscale resolution [2], consisting of a self-heated probe which acts as a thermosensor during sample scanning. By using doped Si probes and cooling the sample down to 150K,we mapped the thermal resistance of Graphene layers on SiO2 and hBN with sub-10nm resolution. We observed that thermal transport in these layers changes at the elastically deformed areas, which were formed during deposition in the form of bubbles [3]. More specifically, the thermal conductance at the center of the bubbles increases with their surface area. In addition, we study the effect of the sample temperature and the substrate on the thermal conductance of the graphene layers.

AB - Thermal transport in Graphene is of great interest due to its high thermal conductivity, for both fundamental research and future applications such as heat dissipation in electronic devices. Although, the thermal conductivity of graphene can reduce depending on the coupling to the substrate [1]. In this work, we report high-resolution imaging of nanoscale thermal transport in single and few layers of Graphene on Silicon Oxide (SiO2) and hexagonal Boron Nitride (hBN), by Scanning Thermal Microscopy (SThM) in high vacuum. SThM is a leading technique for mapping thermal properties with nanoscale resolution [2], consisting of a self-heated probe which acts as a thermosensor during sample scanning. By using doped Si probes and cooling the sample down to 150K,we mapped the thermal resistance of Graphene layers on SiO2 and hBN with sub-10nm resolution. We observed that thermal transport in these layers changes at the elastically deformed areas, which were formed during deposition in the form of bubbles [3]. More specifically, the thermal conductance at the center of the bubbles increases with their surface area. In addition, we study the effect of the sample temperature and the substrate on the thermal conductance of the graphene layers.

KW - scanning thermal microscopy

KW - SThM

KW - nanoscale heat transport

KW - cryogenic SThM

KW - nanometarials

KW - 2D materials

KW - graphene

KW - hBN

KW - boron nitride

M3 - Abstract

T2 - MMC2017

Y2 - 3 July 2017 through 6 July 2017

ER -