@article{yang_kwon_kanetkar_xing_nithyanandam_li_jung_gong_tuman_shen_et al._2021, title={Skin-Inspired Capacitive Stress Sensor with Large Dynamic Range via Bilayer Liquid Metal Elastomers}, volume={11}, ISSN={["2365-709X"]}, DOI={10.1002/admt.202101074}, abstractNote={Abstract}, journal={ADVANCED MATERIALS TECHNOLOGIES}, author={Yang, Jiayi and Kwon, Ki Yoon and Kanetkar, Shreyas and Xing, Ruizhe and Nithyanandam, Praneshnandan and Li, Yang and Jung, Woojin and Gong, Wei and Tuman, Mary and Shen, Qingchen and et al.}, year={2021}, month={Nov} } @misc{chatterjee_ghosh_2021, title={Thermoelectric Materials for Textile Applications}, volume={26}, ISSN={["1420-3049"]}, url={https://doi.org/10.3390/molecules26113154}, DOI={10.3390/molecules26113154}, abstractNote={Since prehistoric times, textiles have served an important role–providing necessary protection and comfort. Recently, the rise of electronic textiles (e-textiles) as part of the larger efforts to develop smart textiles, has paved the way for enhancing textile functionalities including sensing, energy harvesting, and active heating and cooling. Recent attention has focused on the integration of thermoelectric (TE) functionalities into textiles—making fabrics capable of either converting body heating into electricity (Seebeck effect) or conversely using electricity to provide next-to-skin heating/cooling (Peltier effect). Various TE materials have been explored, classified broadly into (i) inorganic, (ii) organic, and (iii) hybrid organic-inorganic. TE figure-of-merit (ZT) is commonly used to correlate Seebeck coefficient, electrical and thermal conductivity. For textiles, it is important to think of appropriate materials not just in terms of ZT, but also whether they are flexible, conformable, and easily processable. Commercial TEs usually compromise rigid, sometimes toxic, inorganic materials such as bismuth and lead. For textiles, organic and hybrid TE materials are more appropriate. Carbon-based TE materials have been especially attractive since graphene and carbon nanotubes have excellent transport properties with easy modifications to create TE materials with high ZT and textile compatibility. This review focuses on flexible TE materials and their integration into textiles.}, number={11}, journal={MOLECULES}, publisher={MDPI AG}, author={Chatterjee, Kony and Ghosh, Tushar K.}, year={2021}, month={Jun} } @article{chatterjee_ghosh_2020, title={3D Printing of Textiles: Potential Roadmap to Printing with Fibers}, volume={32}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85075933322&partnerID=MN8TOARS}, DOI={10.1002/adma.201902086}, abstractNote={Abstract}, number={4}, journal={Advanced Materials}, publisher={Wiley}, author={Chatterjee, Kony and Ghosh, Tushar}, year={2020}, month={Jan}, pages={1902086} } @inbook{fang_chatterjee_kapoor_ghosh_2020, place={Weinheim, Germany}, title={Fiber-Based Sensors and Actuators}, ISBN={9783527342204}, url={http://dx.doi.org/10.1002/9783527342587.ch25}, DOI={10.1002/9783527342587.ch25}, abstractNote={Wearable electronics have evolved from personal pocket-size devices to smart glasses and watches, athletic apparel with biomonitoring capabilities, and high fashion garments with responsive designs. Integration of electronic devices that are traditionally rigid into textile form factors that can be worn for on-body applications also dubbed as electronic textiles (e-textiles) are well underway. Textiles used as clothing provide an excellent medium for the deployment of flexible electronics due their intimate contact with the human body. While the new area of innovative research and commercialization of e-textile products offer many opportunities the challenges are to preserve the quintessential qualities of textiles such as flexibility, porosity, bulk, and texture essential for clothing and others. In this chapter, we review the integration of sensors and actuators into fibrous form factors for various wearable electronic applications. Since sensors and actuators are closely linked in terms of providing a measurable response to an external stimulus, we envisage a closed loop personal comfort system where both are integrated to create an autonomous system of control without the need for external intervention. Hence, research in this field is particularly of interest both from a materials perspective as well as from a structure and performance perspective.}, booktitle={Handbook of Fibrous Materials}, publisher={Wiley-VCH}, author={Fang, X. and Chatterjee, K. and Kapoor, A. and Ghosh, T.K.}, editor={Hu, Jinlian and Kumar, Bipin and Lu, JingEditors}, year={2020}, pages={681–720} } @article{armstrong_chatterjee_ghosh_spontak_2020, title={Form-stable phase-change elastomer gels derived from thermoplastic elastomer copolyesters swollen with fatty acids}, volume={686}, ISSN={["1872-762X"]}, url={http://dx.doi.org/10.1016/j.tca.2020.178566}, DOI={10.1016/j.tca.2020.178566}, abstractNote={Phase-change materials (PCMs) are of considerable scientific and technological interest in applications related to energy management and storage, especially as they pertain to residential or commercial construction and packaging. Most PCMs developed for these purposes consist of a crystallizable species encapsulated within an impermeable polymeric shell. Such encapsulants can then be strategically embedded throughout a construct to promote thermal stability in close proximity to the normal melting point of the encapsulated species. In this study, we introduce form-stable PCMs, which avoid the need for costly and inconvenient encapsulation and consist of commercial thermoplastic elastomer copolyesters selectively swollen with crystallizable fatty acids. Since the copolyester matrices endow the PCMs with solid-like characteristics even when swollen with liquid, we refer to this particular class of materials as phase-change elastomer gels (PCEGs). In this study, we explore the thermal characteristics of PCEG films wherein the copolyester grade, gel composition and fatty acid are all varied. Our results indicate that these PCEGs exhibit non-hysteretic thermal cycling, unaffected transition temperatures, and competitive latent transition heats. Relative to model and commercially available encapsulated PCMs, the form-stable PCEGs examined here afford an alternative capable of superior thermal performance and versatility.}, journal={THERMOCHIMICA ACTA}, author={Armstrong, Daniel P. and Chatterjee, Kony and Ghosh, Tushar K. and Spontak, Richard J.}, year={2020}, month={Apr} } @article{chatterjee_negi_kim_liu_ghosh_2020, title={In-Plane Thermoelectric Properties of Flexible and Room-Temperature-Doped Carbon Nanotube Films}, volume={3}, url={https://doi.org/10.1021/acsaem.0c00995}, DOI={10.1021/acsaem.0c00995}, abstractNote={Soft materials with high power factors (PFs) and low thermal conductivity (κ) are critically important for integration of thermoelectric (TE) modules into flexible form factors for energy harvestin...}, number={7}, journal={ACS Applied Energy Materials}, publisher={American Chemical Society (ACS)}, author={Chatterjee, Kony and Negi, Ankit and Kim, Kyunghoon and Liu, Jun and Ghosh, Tushar K.}, year={2020}, month={Jul}, pages={6929–6936} } @article{tabor_chatterjee_ghosh_2020, title={Smart Textile‐Based Personal Thermal Comfort Systems: Current Status and Potential Solutions}, url={http://dx.doi.org/10.1002/admt.201901155}, DOI={10.1002/admt.201901155}, abstractNote={Abstract}, journal={Advanced Materials Technologies}, author={Tabor, Jordan and Chatterjee, Kony and Ghosh, Tushar K.}, year={2020}, month={Mar} } @misc{chatterjee_tabor_ghosh_2019, title={Electrically Conductive Coatings for Fiber-Based E-Textiles}, volume={7}, ISSN={["2079-6439"]}, url={https://doi.org/10.3390/fib7060051}, DOI={10.3390/fib7060051}, abstractNote={With the advent of wearable electronic devices in our daily lives, there is a need for soft, flexible, and conformable devices that can provide electronic capabilities without sacrificing comfort. Electronic textiles (e-textiles) combine electronic capabilities of devices such as sensors, actuators, energy harvesting and storage devices, and communication devices with the comfort and conformability of conventional textiles. An important method to fabricate such devices is by coating conventionally used fibers and yarns with electrically conductive materials to create flexible capacitors, resistors, transistors, batteries, and circuits. Textiles constitute an obvious choice for deployment of such flexible electronic components due to their inherent conformability, strength, and stability. Coating a layer of electrically conducting material onto the textile can impart electronic capabilities to the base material in a facile manner. Such a coating can be done at any of the hierarchical levels of the textile structure, i.e., at the fiber, yarn, or fabric level. This review focuses on various electrically conducting materials and methods used for coating e-textile devices, as well as the different configurations that can be obtained from such coatings, creating a smart textile-based system.}, number={6}, journal={FIBERS}, publisher={MDPI AG}, author={Chatterjee, Kony and Tabor, Jordan and Ghosh, Tushar K.}, year={2019}, month={Jun} } @misc{agcayazi_chatterjee_bozkurt_ghosh_2018, title={Flexible Interconnects for Electronic Textiles}, volume={3}, ISSN={["2365-709X"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85041134838&partnerID=MN8TOARS}, DOI={10.1002/admt.201700277}, abstractNote={Abstract}, number={10}, journal={ADVANCED MATERIALS TECHNOLOGIES}, author={Agcayazi, Talha and Chatterjee, Kony and Bozkurt, Alper and Ghosh, Tushar K.}, year={2018}, month={Oct} } @article{kapoor_mcknight_chatterjee_agcayazi_kausche_bozkurt_ghosh_2018, title={Toward Fully Manufacturable, Fiber Assembly-Based Concurrent Multimodal and Multifunctional Sensors for e-Textiles}, volume={4}, ISSN={2365-709X}, url={http://dx.doi.org/10.1002/ADMT.201800281}, DOI={10.1002/admt.201800281}, abstractNote={Abstract}, number={1}, journal={Advanced Materials Technologies}, publisher={Wiley}, author={Kapoor, Ashish and McKnight, Michael and Chatterjee, Kony and Agcayazi, Talha and Kausche, Hannah and Bozkurt, Alper and Ghosh, Tushar K.}, year={2018}, month={Oct}, pages={1800281} } @inproceedings{kapoor_mcknight_chatterjee_agcayazi_kausche_ghosh_bozkurt_2017, place={Orlando, FL, USA}, title={Soft, flexible 3D printed fibers for capacitive tactile sensing}, url={http://ieeexplore.ieee.org/document/7808918/}, DOI={10.1109/ICSENS.2016.7808918}, abstractNote={This study presents our latest efforts towards developing a force sensor array by weaving 3D printed functionalized polymer fibers. Silicone was used as the base polymer and carbon fillers were used to impart electrical conductivity. Two “H”-shaped fiber cross-sections oriented orthogonally acted as a parallel plate capacitor and were used for detecting normal forces. In this article, we present the fabrication method of the unique “H”-shaped fiber cross-section along with the investigation of the relation between applied force and measured capacitance. We also report the sensor response to variation in temperature. The sensing crossover was found to have a stable mechanical and electrical response in the force range of 0–6 N and the performance of this soft sensor was not significantly affected by temperature.}, booktitle={IEEE Sensors}, author={Kapoor, A. and McKnight, M. and Chatterjee, Kony and Agcayazi, T. and Kausche, H. and ghosh and Bozkurt, A.}, year={2017}, month={Jan}, pages={1–3} }