@article{jia_chowdhury_xu_2020, title={Complex impedance spectra of polymer-derived SiC annealed at ultrahigh temperature}, volume={103}, ISSN={["1551-2916"]}, DOI={10.1111/jace.17395}, abstractNote={Abstract}, number={12}, journal={JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, author={Jia, Yujun and Chowdhury, Md Atiqur Rahman and Xu, Chengying}, year={2020}, month={Dec}, pages={6860–6868} }
 @article{chowdhury_wang_jia_xu_2020, title={Electrical Conductivity and Structural Evolution of Polymer Derived SiC Ceramics Pyrolyzed From 1200°C to 1800°C}, volume={8}, ISSN={2166-0468 2166-0476}, url={http://dx.doi.org/10.1115/1.4046191}, DOI={10.1115/1.4046191}, abstractNote={Abstract}, number={2}, journal={Journal of Micro and Nano-Manufacturing}, publisher={ASME International}, author={Chowdhury, Md Atiqur and Wang, Kewei and Jia, Yujun and Xu, Chengying}, year={2020}, month={Feb} }
 @article{chowdhury_wang_jia_xu_2020, title={Semiconductor-conductor transition of pristine polymer-derived ceramics SiC pyrolyzed at temperature range from 1200 degrees C to 1800 degrees C}, volume={103}, ISSN={["1551-2916"]}, DOI={10.1111/jace.16961}, abstractNote={Abstract}, number={4}, journal={JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, author={Chowdhury, Md Atiqur Rahman and Wang, Kewei and Jia, Yujun and Xu, Chengying}, year={2020}, month={Apr}, pages={2630–2642} }
 @article{jia_chowdhury_zhang_xu_2019, title={Wide-Band Tunable Microwave-Absorbing Ceramic Composites Made of Polymer-Derived SiOC Ceramic and in Situ Partially Surface-Oxidized Ultra-High-Temperature Ceramics}, volume={11}, ISSN={["1944-8252"]}, DOI={10.1021/acsami.9b16475}, abstractNote={Microwave absorbing materials in high-temperature harsh environment are highly desired for electronics and aerospace applications. This study reports a novel high-temperature microwave absorbing ceramic composites made of polymer derived SiOC ceramic and in-situ partially surface-oxidized ultra-high temperature ceramic (UHTC) ZrB2 nanoparticles. The fabricated composites with a normalized weight fraction of ZrB2 nanoparticles at 40% has a significantly wide microwave absorption bandwidth of 13.5 GHz (26.5-40GHz) covering the entire Ka-band. This is attributed to the extensive nanointerfaces introduced in the composites, attenuation induced by the interference of electromagnetic wave, attenuation from the formed current loops and the electronic conduction loss provided by the partially surface-oxidized ZrB2 nanoparticles. The minimum reflection coefficient (RC) was -29.30 dB at 29.47 GHz for a thickness of 1.26 mm for the composites with a normalized weight fraction of ZrB2 nanoparticles at 32.5%. The DC conductivity of the nanocomposites showed a clear percolation phenomenon as the normalized weight fraction of ZrB2 nanoparticles increases to 30.49 %. The results provide new insights in designing microwave absorbing materials with a wide absorption frequency range and strong absorption loss for high-temperature harsh environment applications.}, number={49}, journal={ACS APPLIED MATERIALS & INTERFACES}, author={Jia, Yujun and Chowdhury, Md Atiqur Rahman and Zhang, Dajie and Xu, Chengying}, year={2019}, month={Dec}, pages={45862–45874} }