A5064609707- Boron and Carbon Nanomaterials Research
- Graphene research and applications
- Carbon Nanotubes in Composites
- Diamond and Carbon-based Materials Research
- Electrostatics and Colloid Interactions
- 2D Materials and Applications
- Supercapacitor Materials and Fabrication
- Fullerene Chemistry and Applications
- Nanopore and Nanochannel Transport Studies
University of Maryland, College Park
2021-2025
Carbyne, a one-dimensional (1D) carbon allotrope with alternating triple and single bonds, has the highest known mechanical strength but is unstable to bending, limiting its synthesis short linear chains. Encapsulation within nanotubes (CNTs) stabilizes carbyne, forming confined carbyne (CC), thus enabling further research concerning attractive 1D physics materials properties of carbyne. While CC been synthesized in multi-walled CNTs using arc-discharge method double-walled via...
Surfactants, molecular surface-active agents, are widely used to stabilize single-walled carbon nanotubes (SWCNTs) and many other nanomaterials in water facilitate solution processing device integration. However, it is notoriously difficult cleanly remove surfactants when they no longer needed. Even high-temperature thermal annealing leaves residues that can degrade the otherwise remarkable electrical optical properties of SWCNTs. Moreover, damages smaller-diameter (<1 nm) due aggressive...
Surfactants are widely used to disperse single-walled carbon nanotubes (SWCNTs) and other nanomaterials for liquid-phase processing characterization. Traditional techniques, however, demand high surfactant concentrations, often in the range of 1–2 wt/v% solution. Here, we show that optimal dispersion efficiency can be attained at substantially lower concentrations approximately 0.08 wt/v%, near critical micelle concentration. This unexpected observation is achieved by introducing "bare" into...
Single-wall carbon nanotubes in boron nitride (SWCNT@BN) are one-dimensional van der Waals heterostructures that exhibit intriguing physical and chemical properties. As with their nanotube counterparts, these can form from different combinations of chiralities, providing rich structures but also posing a significant synthetic challenge to controlling structure. Enabled by advances chirality sorting, clean removal the surfactant used for solution processing, simple method fabricate...
Carbyne, a one-dimensional (1D) carbon allotrope with alternating triple and single bonds, has the highest known mechanical strength but is unstable to bending, limiting synthesis short linear chains. Encapsulation within nanotubes (CNTs) stabilizes carbyne, forming confined carbyne (CC), thus enabling further research concerning attractive 1D physics materials properties of carbyne. While CC been synthesized in multi-walled CNTs (MWCNTs) using arc-discharge method double-walled (DWCNTs) via...