About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
|
| Presentation Title |
Laser-Induced NanoCarbon Synthesis and Transfer for Conformal Nanocarbon Coatings on Thermally Sensitive Substrates |
| Author(s) |
Diala Bani Mustafa, Soumalya Ghosh, Nathan Carney, Mostafa Bedewy |
| On-Site Speaker (Planned) |
Diala Bani Mustafa |
| Abstract Scope |
Direct deposition of functional nanocarbon coatings remains challenging on low-service-temperature polymers and three-dimensional substrates that cannot be directly laser-carbonized. Here, we present Laser-Induced NanoCarbon Synthesis and Transfer (LINCSAT), a one-step ambient process that couples laser carbonization of a polyimide donor with vertical nanocarbon transfer to a physically separated receiver. A printed toner interlayer increases near-infrared absorption, enabling coating formation at powers as low as 3.5 W and producing uniform coatings with thicknesses up to approximately 44 µm. By varying donor-receiver spacing and laser fluence, coating thickness, morphology, and wetting behavior are controlled. Raman spectroscopy, X-ray photoelectron spectroscopy, electron microscopy, and high-resolution transmission electron microscopy confirm porous sp<sup>2-rich nanocarbon with graphitic interlayer spacing near 3.35 Å. LINCSAT produces superhydrophobic polypropylene surfaces with contact angles near 156° and roll-off angles ≤5°, while glass receivers exhibit pinned hydrophobic behavior. The process also enables conformal coating of polypropylene sutures without thermal damage. |