Taigyu Joo

All Publications

• Single Layer Silk and Cotton Woven Fabrics for Acoustic Emission and Active Sound Suppression. Advanced materials (Deerfield Beach, Fla.) Yang, G. H., Lin, J., Cheung, H., Rui, G., Zhao, Y., Balachander, L., Joo, T., Lee, H., Smith, Z. P., Zhu, L., Ma, C., Fink, Y. 2024: e2313328

  Abstract

  Whether intentionally generating acoustic waves or attempting to mitigate unwanted noise, sound control is an area of challenge and opportunity. This study investigates traditional fabrics as emitters and suppressors of sound. When attached to a single strand of a piezoelectric fiber actuator, a silk fabric emits up to 70 dB of sound. Despite the complex fabric structure, vibrometer measurements reveal behavior reminiscent of a classical thin plate. Fabric pore size relative to the viscous boundary layer thickness is found-through comparative fabric analysis-to influence acoustic-emission efficiency. Sound suppression is demonstrated using two distinct mechanisms. In the first, direct acoustic interference is shown to reduce sound by up to 37 dB. The second relies on pacifying the fabric vibrations by the piezoelectric fiber, reducing the amplitude of vibration waves by 95% and attenuating the transmitted sound by up to 75%. Interestingly, this vibration-mediated suppression in principle reduces sound in an unlimited volume. It also allows the acoustic reflectivity of the fabric to be dynamically controlled, increasing by up to 68%. The sound emission and suppression efficiency of a 130 µm silk fabric presents opportunities for sound control in a variety of applications ranging from apparel to transportation to architecture.

  View details for DOI 10.1002/adma.202313328

  View details for PubMedID 38561634

• Penetrant-induced plasticization in microporous polymer membranes. Chemical Society reviews Mizrahi Rodriguez, K., Lin, S., Wu, A. X., Storme, K. R., Joo, T., Grosz, A. F., Roy, N., Syar, D., Benedetti, F. M., Smith, Z. P. 2024; 53 (5): 2435-2529

  Abstract

  Penetrant-induced plasticization has prevented the industrial deployment of many polymers for membrane-based gas separations. With the advent of microporous polymers, new structural design features and unprecedented property sets are now accessible under controlled laboratory conditions, but property sets can often deteriorate due to plasticization. Therefore, a critical understanding of the origins of plasticization in microporous polymers and the development of strategies to mitigate this effect are needed to advance this area of research. Herein, an integrative discussion is provided on seminal plasticization theory and gas transport models, and these theories and models are compared to an exhaustive database of plasticization characteristics of microporous polymers. Correlations between specific polymer properties and plasticization behavior are presented, including analyses of plasticization pressures from pure-gas permeation tests and mixed-gas permeation tests for pure polymers and composite films. Finally, an evaluation of common and current state-of-the-art strategies to mitigate plasticization is provided along with suggestions for future directions of fundamental and applied research on the topic.

  View details for DOI 10.1039/d3cs00235g

  View details for PubMedID 38294167

• Free Volume Manipulation and In Situ Oxidative Crosslinking of Amine-Functionalized Microporous Polymer Membranes Chemistry of Materials Joo, T., Lee, T., Kaser, S. J., Wu, W., Wi, S., Yeo, J., Smith, Z. P. 2024; 36 (9): 4275-4290

  View details for DOI 10.1021/acs.chemmater.3c03190

• The role of free volume, hydrogen bonds, and crosslinks on physical aging in polymers of intrinsic microporosity (PIMs) JOURNAL OF MATERIALS CHEMISTRY A Joo, T., Rodriguez, K., Lee, H., Acharya, D., Doherty, C. M., Smith, Z. P. 2023; 11 (29): 15943-15957

  View details for DOI 10.1039/d3ta01680c

  View details for Web of Science ID 001025089500001

• Revisiting group contribution theory for estimating fractional free volume of microporous polymer membranes JOURNAL OF MEMBRANE SCIENCE Wu, A. X., Lin, S., Rodriguez, K., Benedetti, F. M., Joo, T., Grosz, A. F., Storme, K. R., Roy, N., Syar, D., Smith, Z. P. 2021; 636

  View details for DOI 10.1016/j.memsci.2021.119526

  View details for Web of Science ID 000681140000005

• Free volume manipulation of a 6FDA-HAB polyimide using a solid-state protection/deprotection strategy POLYMER Lin, S., Joo, T., Benedetti, F. M., Chen, L. C., Wu, A. X., Rodriguez, K., Qian, Q., Doherty, C. M., Smith, Z. P. 2021; 212

  View details for DOI 10.1016/j.polymer.2020.123121

  View details for Web of Science ID 000607124400007

• On the origin of deactivation of reversal-tolerant fuel cell anodes under voltage reversal conditions JOURNAL OF POWER SOURCES Joo, T., Hu, L., Hong, B., Oh, J., Litster, S. 2020; 472

  View details for DOI 10.1016/j.jpowsour.2020.228439

  View details for Web of Science ID 000558890300010

• CoO nanoparticles deposited on 3D macroporous ozonized RGO networks for high rate capability and ultralong cyclability of pseudocapacitors CERAMICS INTERNATIONAL Bhattacharya, P., Joo, T., Kota, M., Park, H. 2018; 44 (1): 980-987

  View details for DOI 10.1016/j.ceramint.2017.10.032

  View details for Web of Science ID 000416877900133