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Unravelling the room temperature growth of two-dimensional h-BN nanosheets for multifunctional applications.

Abhijit BiswasRishi MaitiFrank LeeCecilia Y ChenTao LiAnand B PuthirathSathvik Ajay IyengarChenxi LiXiang ZhangHarikishan KannanTia GrayMd Abid Shahriar Rahman SaadiJacob ElkinsA Glen BirdwellMahesh R NeupanePankaj B ShahDmitry A RuzmetovTony G IvanovZixing WangYuji ZhaoAlexander L GaetaManoj TripathiAlan B DaltonPulickel M Ajayan
Published in: Nanoscale horizons (2023)
The room temperature growth of two-dimensional van der Waals (2D-vdW) materials is indispensable for state-of-the-art nanotechnology. Low temperature growth supersedes the requirement of elevated growth temperatures accompanied with high thermal budgets. Moreover, for electronic applications, low or room temperature growth reduces the possibility of intrinsic film-substrate interfacial thermal diffusion related deterioration of the functional properties and the consequent deterioration of the device performance. Here, we demonstrated the growth of ultrawide-bandgap boron nitride (BN) at room temperature by using the pulsed laser deposition (PLD) process, which exhibited various functional properties for potential applications. Comprehensive chemical, spectroscopic and microscopic characterizations confirmed the growth of ordered nanosheet-like hexagonal BN (h-BN). Functionally, the nanosheets show hydrophobicity, high lubricity (low coefficient of friction), and a low refractive index within the visible to near-infrared wavelength range, and room temperature single-photon quantum emission. Our work unveils an important step that brings a plethora of potential applications for these room temperature grown h-BN nanosheets as the synthesis can be feasible on any given substrate, thus creating a scenario for " h-BN on demand " under a frugal thermal budget.
Keyphrases
  • room temperature
  • ionic liquid
  • drug delivery
  • high resolution
  • risk assessment
  • molecular dynamics
  • cancer therapy
  • contrast enhanced