Thermal conductivity and phonon transport in suspended few-layer hexagonal boron nitride.

By I. Jo, M. Pettes, Jaehyun Kim, Kenji Watanabe, Takashi Taniguchi, Z. Yao, Li Shi. Nano letters (Print), 2013

691 citations recorded by the source corpus.

The thermal conductivity of suspended few-layer hexagonal boron nitride (h-BN) was measured using a microbridge device with built-in resistance thermometers. Based on the measured thermal resistance values of 11-12 atomic layer h-BN samples with suspended lengths ranging between 3 and 7.5 μm, the room-temperature thermal conductivity of a 11-layer sample was found to be about 360 W m(-1) K(-1), approaching the basal plane value reported for bulk h-BN. The presence of a polymer residue layer on the sample surface was found to decrease the thermal conductivity of a 5-layer h-BN sample to be about 250 W m(-1) K(-1) at 300 K. Thermal conductivities for both the 5-layer and the 11-layer samples are suppressed at low temperatures, suggesting increasing scattering of low frequency phonons in thin h-BN samples by polymer residue.

Subfields: Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/c61c22e3debf82186b0f23de809855cf5b54d8fc

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In Materials Chemistry

1. Hui‐Ming Cheng
2. Baowen Li
3. Xiaokun Gu
4. Xiaobo Yin
5. Yujie Wei
6. Ronggui Yang
7. Mauricio Terrones
8. Feiyu Kang

Citations in the corpus

• Novel nanostructured thermal interface materials: a review (2018, background): “It can be produced in large enough quantities and has a relatively high thermal conductivity [197], while”
• High thermal conductivity of suspended few-layer hexagonal boron nitride sheets (2014, background): “However, recent research on h-BN mainly focuses on its large-scale synthesis [16–20] and optical and electronic properties [1–3, 5, 21, 22] rather than the thermal properties [23].”