Ultrahigh Temperature Graphene Molecular Heater,Advanced Materials Interfaces

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Ultrahigh Temperature Graphene Molecular Heater
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2018-01-15 , DOI: 10.1002/admi.201701299
Ke Huang ₁ , Jinxin Liu ₁ , Lifang Tan ₁ , Junlai Zuo ₁ , Lei Fu _{1,

2}

Affiliation

Although a number of molecular devices have been fabricated successfully, molecular heater still keeps blank. It is of great importance to find a satisfactory molecular building block with thicknesses controlled at the atomic level and outstanding electrical properties to achieve the construction of molecular heater. Graphene, a polycyclic aromatic hydrocarbon molecule with strictly atomic thickness, is known as a superior heat and electricity conductor, which makes it a promising building block of the molecular heater. However, the directly grown graphene on insulated substrate suffers from the significant drawback of low quality and nonuniformity and the transferred graphene is criticized because of its cracks and residues. Therefore, the heat temperature is limited to ≈200 °C in previous graphene‐based heaters. Here, a practical graphene molecular heater (GMH) with extremely high heating temperature up to ≈600 °C at a low voltage of 7.5 V is first constructed, and its heating characteristics are systematically explored. The Joule heating efficiency, temperature distribution, and heating rate of GMH exhibit promising characteristics. The successful construction of GMH suggests a bright future toward the urgent demand of miniaturization for the next‐generation devices.

中文翻译：

超高温石墨烯分子加热器

尽管已经成功地制造了许多分子装置，但是分子加热器仍然保持空白。找到令人满意的分子结构单元，其厚度可控制在原子水平，并且具有出色的电性能，以实现分子加热器的结构，这一点非常重要。石墨烯是一种具有严格原子厚度的多环芳烃分子，被称为一种优良的热和电导体，这使其成为分子加热器的有希望的组成部分。然而，在绝缘衬底上直接生长的石墨烯具有质量低和不均匀的显着缺点，并且转移的石墨烯由于其裂纹和残留物而受到批评。因此，在以前的基于石墨烯的加热器中，加热温度限制为≈200°C。这里，首先构建了实用的石墨烯分子加热器（GMH），该加热器在7.5 V的低压下具有高达≈600°C的极高加热温度，并系统地研究了其加热特性。GMH的焦耳加热效率，温度分布和加热速率显示出令人鼓舞的特性。GMH的成功建设表明，下一代产品的小型化迫切需求将迎来光明的未来。

更新日期：2018-01-15

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