@article{kungsadalpipob_lubna_bradford_2024, title={Novel three-dimensional printed continuous Zylon yarn reinforced polylactic acid composites utilizing compatible sizing}, ISSN={["2363-9520"]}, DOI={10.1007/s40964-023-00549-x}, journal={PROGRESS IN ADDITIVE MANUFACTURING}, author={Kungsadalpipob, Patrapee and Lubna, Mostakima M. and Bradford, Philip D.}, year={2024}, month={Jan} }
 @article{hossain_lubna_bradford_2023, title={Multifunctional and Washable Carbon Nanotube-Wrapped Textile Yarns for Wearable E-Textiles}, ISSN={["1944-8252"]}, DOI={10.1021/acsami.2c19826}, abstractNote={Carbon nanotube (CNT) yarns are promising for wearable electronic applications due to their excellent electromechanical and thermal properties and structural flexibility. A spinning system was customized to produce CNT-wrapped textile yarns for wearable applications. By adjusting the spinning parameters and core yarn, a highly tailored hybrid CNT yarn could be produced for textile processing, e.g., knitting and weaving. The electrical resistance and mechanical properties of the yarn are influenced by the core yarn. The high flexibility of the yarn enabled state-of-the-art three-dimensional (3D) knitting of the CNT-wrapped yarn for the first time. Using the 3D knitted technology, CNT-wrapped textile yarns were seamlessly integrated into a wrist band and the index finger of a glove. The knitted structure exhibited a large resistance change under strain and precisely recorded the signal under the different movements of the finger and wrist. When the knitted fabric was connected to a power source, rapid heating above skin temperature was observed at a low voltage. This work presents a novel hybrid yarn for the first time, which sustained 30 washing cycles without performance degradation. By changing the core yarn, a highly stretchable and multimodal sensing system could be developed for wearable applications.}, journal={ACS APPLIED MATERIALS & INTERFACES}, author={Hossain, Md Milon and Lubna, Mostakima M. and Bradford, Philip D.}, year={2023}, month={Jan} }
 @article{suh_twiddy_mahmood_ali_lubna_bradford_daniele_gluck_2022, title={Electrospun Carbon Nanotube-Based Scaffolds Exhibit High Conductivity and Cytocompatibility for Tissue Engineering Applications}, volume={7}, ISSN={["2470-1343"]}, url={https://doi.org/10.1021/acsomega.2c01807}, DOI={10.1021/acsomega.2c01807}, abstractNote={Carbon nanotubes (CNTs) are known for their excellent conductive properties. Here, we present two novel methods, “sandwich” (sCNT) and dual deposition (DD CNT), for incorporating CNTs into electrospun polycaprolactone (PCL) and gelatin scaffolds to increase their conductance. Based on CNT percentage, the DD CNT scaffolds contain significantly higher quantities of CNTs than the sCNT scaffolds. The inclusion of CNTs increased the electrical conductance of scaffolds from 0.0 ± 0.00 kS (non-CNT) to 0.54 ± 0.10 kS (sCNT) and 5.22 ± 0.49 kS (DD CNT) when measured parallel to CNT arrays and to 0.25 ± 0.003 kS (sCNT) and 2.85 ± 1.12 (DD CNT) when measured orthogonally to CNT arrays. The inclusion of CNTs increased fiber diameter and pore size, promoting cellular migration into the scaffolds. CNT inclusion also decreased the degradation rate and increased hydrophobicity of scaffolds. Additionally, CNT inclusion increased Young’s modulus and failure load of scaffolds, increasing their mechanical robustness. Murine fibroblasts were maintained on the scaffolds for 30 days, demonstrating high cytocompatibility. The increased conductivity and high cytocompatibility of the CNT-incorporated scaffolds make them appropriate candidates for future use in cardiac and neural tissue engineering.}, number={23}, journal={ACS OMEGA}, publisher={American Chemical Society (ACS)}, author={Suh, Taylor C. and Twiddy, Jack and Mahmood, Nasif and Ali, Kiran M. and Lubna, Mostakima M. and Bradford, Philip D. and Daniele, Michael A. and Gluck, Jessica M.}, year={2022}, month={Jun}, pages={20006–20019} }
 @article{yildiz_lubna_ramesh_ozturk_bradford_2022, title={Microporous vertically aligned CNT nanocomposites with tunable properties for use in flexible heat sinks}, volume={7}, ISSN={["2468-2179"]}, DOI={10.1016/j.jsamd.2022.100509}, abstractNote={Effective thermal management of electronic systems depends on the heat transfer efficiency or the heat dissipation capability and the thermal conductivity of heat sink components, which has a critical impact on the performance of the devices. The rapidly growing field of microelectronics creates an enormous need for next-generation flexible, lightweight heat sinks. In this work, flexible, microporous nanocomposites are fabricated utilizing a unique yet easily tunable processing method, targeting heat-sink applications. The highly porous and low-density nanohybrid structures were fabricated in a unique processing technique using conformally pyrolytic carbon (PyC) coated vertically aligned carbon nanotube (VACNT) arrays and polydimethylsiloxane (PDMS) infiltration. Simply by varying the concentration of the PDMS in the VACNT structure, the microporosity can be tuned from 50% to 93%, and at the same time, the density of the structure varies from 0.11 g/cm3 to 0.51 g/cm3. The through-thickness thermal conductivity of the VACNT – PDMS nanocomposites did not vary substantially with increasing PDMS concentration, and the highest performance samples exhibited 14.1 W/mK thermal conductivity. The highly flexible nanocomposite structure also showed excellent mechanical resiliency and exhibited complete recovery from 80% compressive strain. The final heat-sink structure with fins was fabricated by a controlled laser etching technique. Analysis of the flexible VACNT array heat sink showed a significant ∼27% reduction in thermal resistance with an air velocity of 1.5 m/s and about ∼40% improvement in the output performance of a thermoelectric generator (TEG) on which it was mounted. The high thermal conductivity of VACNTs and the large surface area provided by the microporous structure, as well as the laser-etched fins, all together contributed to better thermal management performance.}, number={4}, journal={JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES}, author={Yildiz, Ozkan and Lubna, Mostakima M. and Ramesh, Viswanath P. and Ozturk, Mehmet and Bradford, Philip D.}, year={2022}, month={Dec} }
 @article{aly_lubna_bradford_2021, title={Low density, three-dimensionally interconnected carbon nanotube/silicon carbide nanocomposites for thermal protection applications}, volume={41}, ISSN={["1873-619X"]}, DOI={10.1016/j.jeurceramsoc.2020.06.020}, abstractNote={Synthesis of silicon carbide (SiC) nanostructures and their composites has been a topic of interest for the scientific community due to the unique properties that can be obtained with nanoscale features. Herein, we report the scalable fabrication of anisotropic and low density, carbon nanotube/SiC (CNT/SiC) core-shell structures synthesized via chemical vapor infiltration (CVI) of silicon on aligned CNT foams followed by heat treatment at 1350 °C. Structures made of CNT/SiC nanotube networks with a thickness of 1 cm and length of 9 cm were prepared in the present work. Upon the removal of the CNT foam via calcination of the hybrid nanocomposite in air, a free-standing mechanically robust three-dimensional network of pure SiC nanotubes was left behind. The density of the synthesized CNT/SiC is the lowest reported for any C/SiC structure. Furthermore, the CNT/SiC hybrid nano-architecture demonstrated superb heat resistance and stability in ultrahigh temperature environment.}, number={1}, journal={JOURNAL OF THE EUROPEAN CERAMIC SOCIETY}, author={Aly, Karim and Lubna, Mostakima and Bradford, Philip D.}, year={2021}, month={Jan}, pages={233–243} }