@article{shao_qu_wang_cui_liu_zhu_2023, title={Interfacial shear stress transfer between elastoplastic fiber and elastic matrix}, volume={173}, ISSN={["1873-4782"]}, DOI={10.1016/j.jmps.2023.105218}, abstractNote={Interfacial mechanics between elastoplastic fiber and elastic substrate/matrix is of critical importance for a range of applications such as metal nanowires on polymer substrate for flexible and stretchable electronics and metal fibers in ceramic matrix for multifunctional composites. Here analytical models of an elastoplastic fiber (e.g., nanowire) on the as-prepared or chemically treated elastic substrate are derived by using the nonlinear and bilinear cohesive shear-lag models, respectively, for the fiber/substrate interface. For the first time, the effect of plastic mechanical behavior of the fiber on the interfacial shear stress transfer characteristics is studied. Different cases considering the length of the plastic zone relative to the bonded, sliding, damaged and debonded zones are investigated. The effect of the substrate strain, nanowire length and diameters is investigated to predict the mechanical behavior of the nanowire, which provides a guide to the experiment with metal nanowires on a polymer substrate. This work can be extended to other elastoplastic fibers including 2D nanomaterials, metal particles, and metal thin films on elastic substrates or matrices.}, journal={JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS}, author={Shao, Li-Hua and Qu, Xiaodong and Wang, Tianyu and Cui, Zheng and Liu, Yuxuan and Zhu, Yong}, year={2023}, month={Apr} }
 @article{yao_cui_cui_zhu_2022, title={Soft electrothermal actuators using silver nanowire heaters (vol 9, pg 3797, 2017)}, volume={14}, ISSN={["2040-3372"]}, DOI={10.1039/d2nr90086f}, abstractNote={Correction for ‘Soft electrothermal actuators using silver nanowire heaters’ by Shanshan Yao et al., Nanoscale, 2017, 9, 3797–3805, https://doi.org/10.1039/C6NR09270E.}, number={17}, journal={NANOSCALE}, author={Yao, Shanshan and Cui, Jianxun and Cui, Zheng and Zhu, Yong}, year={2022}, month={May}, pages={6671–6671} }
 @article{wu_cui_baker_mahendran_xie_zhu_2021, title={A Biaxially Stretchable and Self-Sensing Textile Heater Using Silver Nanowire Composite}, volume={13}, ISSN={["1944-8252"]}, DOI={10.1021/acsami.1c17651}, abstractNote={Wearable heaters have garnered significant attention from academia and industry for their great potential in thermotherapy. Silver nanowire (AgNW) is a promising conductive material for flexible and stretchable electrodes. Here, a resistive, biaxially stretchable heater based on AgNW composite is reported for the first time, where a AgNW percolation network is encased in a thin polyimide (PI) film and integrated with a highly stretchable textile. AgNW/PI is patterned with a 2D Kirigami structure, which enables constant resistance under a large tensile strain (up to uniaxial 100% strain and 50% biaxial strain). The heater can achieve a high temperature of ∼140 °C with a low current of 0.125 A, fast heating and cooling rates of ∼16.5 and ∼14.1 °C s-1, respectively, and stable performance over 400 heating cycles. A feedback control system is developed to provide constant heating temperature under a temperature change of the surrounding environment. Demonstrated applications in applying thermotherapy at the curvilinear surface of the knee using the stretchable heater illustrate its promising potential for wearable applications.}, number={49}, journal={ACS APPLIED MATERIALS & INTERFACES}, author={Wu, Shuang and Cui, Zheng and Baker, G. Langston and Mahendran, Siddarth and Xie, Ziyang and Zhu, Yong}, year={2021}, month={Dec}, pages={59085–59091} }
 @article{poblete_cui_liu_zhu_2020, title={Stretching nanowires on a stretchable substrate: A method towards facile fracture testing and elastic strain engineering}, volume={41}, ISSN={["2352-4316"]}, DOI={10.1016/j.eml.2020.101035}, abstractNote={Nanomaterials are building blocks for a wide range of applications. They typically exhibit ultrahigh strength, which make them also promising candidates for elastic strain engineering. Here we demonstrate a potentially facile method to measure fracture strain and strain distribution of nanomaterials, with Ag nanowires as an example. Nanowires are placed on top of or embedded in a stretchable substrate (i.e., elastomer), either as-prepared (van der Waals interactions) or treated with UV ozone (chemical bonding), which is subjected to uniaxial tensile loading. Nonlinear and bilinear cohesive shear-lag models can well capture the interfacial shear stress transfer characteristics associated with the two types of interactions, respectively. For each type, interfacial parameters such as stiffness, shear strength, and/or fracture toughness are identified by fitting the measured average strains of the nanowires. The nanowires embedded in as-prepared and on top of treated substrate are found to fracture under large substrate strain. The fracture strain and strain distribution along the nanowires are predicted using the shear-lag models. This method can be readily applied to investigate fracture and elastic strain engineering of 1D nanomaterials (regardless of aligned or inclined with respect to the stretching direction) and 2D nanomaterials.}, journal={EXTREME MECHANICS LETTERS}, author={Poblete, Felipe R. and Cui, Zheng and Liu, Yuxuan and Zhu, Yong}, year={2020}, month={Nov} }
 @article{zhou_li_li_chen_xu_yao_cui_booth_mi_wang_et al._2019, title={Metal Mesh as a Transparent Omnidirectional Strain Sensor}, volume={4}, ISSN={["2365-709X"]}, DOI={10.1002/admt.201800698}, abstractNote={Abstract}, number={4}, journal={ADVANCED MATERIALS TECHNOLOGIES}, author={Zhou, Weixin and Li, Yi and Li, Pan and Chen, Jun and Xu, Rongqing and Yao, Shanshan and Cui, Zheng and Booth, Ronald and Mi, Baoxiu and Wang, Dan and et al.}, year={2019}, month={Apr} }
 @article{cui_poblete_zhu_2019, title={Tailoring the Temperature Coefficient of Resistance of Silver Nanowire Nanocomposites and their Application as Stretchable Temperature Sensors}, volume={11}, ISSN={["1944-8252"]}, DOI={10.1021/acsami.9b04045}, abstractNote={Body temperature is an important indicator of the health condition. It is of critical importance to develop a smart temperature sensor for wearable applications. Silver nanowire (AgNW) is a promising conductive material for developing flexible and stretchable electrodes. Here, a stretchable and breathable thermoresistive temperature sensor based on AgNW composites is developed, where a AgNW percolation network is encased in a thin polyimide film. The temperature coefficient of resistance of the AgNW network is tailored by modifying nanowire density and thermal annealing temperature. The temperature sensor is patterned with a Kirigami structure, which enables constant resistance under a large tensile strain (up to 100%). Demonstrated applications in monitoring the temperatures at biceps and knees using the stretchable temperature sensor illustrate the promising potential for wearable applications.}, number={19}, journal={ACS APPLIED MATERIALS & INTERFACES}, author={Cui, Zheng and Poblete, Felipe Robles and Zhu, Yong}, year={2019}, month={May}, pages={17836–17842} }
 @article{cui_han_huang_dong_zhu_2018, title={Electrohydrodynamic printing of silver nanowires for flexible and stretchable electronics}, volume={10}, ISSN={["2040-3372"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85045850487&partnerID=MN8TOARS}, DOI={10.1039/c7nr09570h}, abstractNote={High-resolution, large-scale printing of highly conductive AgNWs for flexible and stretchable electronics using EHD printing is presented. The printed patterns show the smallest line width of 45 μm and electrical conductivity as high as ∼5.6 × 106S m−1. AgNW-based wearable heaters and ECG electrodes are fabricated.}, number={15}, journal={NANOSCALE}, author={Cui, Zheng and Han, Yiwei and Huang, Qijin and Dong, Jingyan and Zhu, Yong}, year={2018}, month={Apr}, pages={6806–6811} }
 @article{jiang_cui_yue_zhu_werner_2017, title={Compact, Highly Efficient, and Fully Flexible Circularly Polarized Antenna Enabled by Silver Nanowires for Wireless Body-Area Networks}, volume={11}, ISSN={["1940-9990"]}, DOI={10.1109/tbcas.2017.2671841}, abstractNote={A compact and flexible circularly polarized (CP) wearable antenna is introduced for wireless body-area network systems at the 2.4 GHz industrial, scientific, and medical (ISM) band, which is implemented by employing a low-loss composite of polydimethylsiloxane (PDMS) and silver nanowires (AgNWs). The circularly polarized radiation is enabled by placing a planar linearly polarized loop monopole above a finite anisotropic artificial ground plane. By truncating the anisotropic artificial ground plane to contain only 2 by 2 unit cells, an integrated antenna with a compact form factor of 0.41λ0 × 0.41λ0 × 0.045λ0 is obtained, all while possessing an improved angular coverage of CP radiation. A flexible prototype was fabricated and characterized, experimentally achieving S 11 <− 15 dB, an axial ratio of less than 3 dB, a gain of around 5.2 dBi, and a wide CP angular coverage in the targeted ISM band. Furthermore, this antenna is compared to a conventional CP patch antenna of the same physical size, which is also comprised of the same PDMS and AgNW composite. The results of this comparison reveal that the proposed antenna has much more stable performance under bending and human body loading, as well as a lower specific absorption rate. In all, the demonstrated wearable antenna offers a compact, flexible, and robust solution which makes it a strong candidate for future integration into body-area networks that require efficient off-body communications.}, number={4}, journal={IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS}, author={Jiang, Zhi Hao and Cui, Zheng and Yue, Taiwei and Zhu, Yong and Werner, Douglas H.}, year={2017}, month={Aug}, pages={920–932} }
 @article{yu_qian_zhang_cui_zhu_shen_ligler_buse_gu_2017, title={Hypoxia and H2O2 Dual-Sensitive Vesicles for Enhanced Glucose-Responsive Insulin Delivery}, volume={17}, ISSN={["1530-6992"]}, DOI={10.1021/acs.nanolett.6b03848}, abstractNote={A glucose-responsive closed-loop insulin delivery system mimicking pancreas activity without long-term side effect has the potential to improve diabetic patients' health and quality of life. Here, we developed a novel glucose-responsive insulin delivery device using a painless microneedle-array patch containing insulin-loaded vesicles. Formed by self-assembly of hypoxia and H2O2 dual-sensitive diblock copolymer, the glucose-responsive polymersome-based vesicles (d-GRPs) can disassociate and subsequently release insulin triggered by H2O2 and hypoxia generated during glucose oxidation catalyzed by glucose specific enzyme. Moreover, the d-GRPs were able to eliminate the excess H2O2, which may lead to free radical-induced damage to skin tissue during the long-term usage and reduce the activity of GOx. In vivo experiments indicated that this smart insulin patch could efficiently regulate the blood glucose in the chemically induced type 1 diabetic mice for 10 h.}, number={2}, journal={NANO LETTERS}, author={Yu, Jicheng and Qian, Chenggen and Zhang, Yuqi and Cui, Zheng and Zhu, Yong and Shen, Qundong and Ligler, Frances S. and Buse, John B. and Gu, Zhen}, year={2017}, month={Feb}, pages={733–739} }
 @article{yao_cui_cui_zhu_2017, title={Soft electrothermal actuators using silver nanowire heaters}, volume={9}, ISSN={["2040-3372"]}, DOI={10.1039/c6nr09270e}, abstractNote={Low-voltage and extremely flexible electrothermal bimorph actuators were fabricated in a simple, efficient and scalable process. The bimorph actuators were made of flexible silver nanowire (AgNW) based heaters, which exhibited a fast heating rate of 18 °C s-1 and stable heating performance with large bending. The actuators offered the largest bending angle (720°) or curvature (2.6 cm-1) at a very low actuation voltage (0.2 V sq-1 or 4.5 V) among all types of bimorph actuators that have been reported to date. The actuators can be designed and fabricated in different configurations that can achieve complex patterns and shapes upon actuation. Two applications of this type of soft actuators were demonstrated towards biomimetic robotics - a crawling robot that can walk spontaneously on ratchet surfaces and a soft gripper that is capable of manipulating lightweight and delicate objects.}, number={11}, journal={NANOSCALE}, author={Yao, Shanshan and Cui, Jianxun and Cui, Zheng and Zhu, Yong}, year={2017}, month={Mar}, pages={3797–3805} }
 @article{zhang_yu_wang_hanne_cui_qian_wang_xin_cole_gallippi_et al._2017, title={Thrombin-responsive transcutaneous patch for auto-anticoagulant regulation}, volume={29}, DOI={10.1002/adma.201770028}, abstractNote={A thrombin-responsive microneedle-based transcutaneous patch is developed by C. M. Gallippi, Y. Zhu, Z. Gu, and co-workers, as demonstrated in article 1604043. The anticoagulant drug heparin is loaded into the hyaluronic acid needles through a thrombin cleavable peptide linker. This heparin patch can sense the thrombin level in blood vessels and autoregulate blood coagulation in a long-term manner. Cover design credit: Yuqi Zhang.}, number={4}, journal={Advanced Materials}, author={Zhang, Y. Q. and Yu, J. C. and Wang, J. Q. and Hanne, N. J. and Cui, Z. and Qian, C. G. and Wang, C. and Xin, H. L. and Cole, Jacqueline and Gallippi, C. M. and et al.}, year={2017} }
 @article{cui_poblete_cheng_yao_jiang_zhu_2015, title={Design and operation of silver nanowire based flexible and stretchable touch sensors}, volume={30}, ISSN={["2044-5326"]}, DOI={10.1557/jmr.2014.347}, abstractNote={Abstract}, number={1}, journal={JOURNAL OF MATERIALS RESEARCH}, author={Cui, Zheng and Poblete, Felipe R. and Cheng, Guangming and Yao, Shanshan and Jiang, Xiaoning and Zhu, Yong}, year={2015}, month={Jan}, pages={79–85} }
 @inproceedings{muchler_cui_zhu_adams_2015, title={Multi-resonant AgNW/PDMS patch antenna for biaxial strain sensing}, booktitle={2015 ieee international symposium on antennas and propagation & usnc/ursi national radio science meeting}, author={Muchler, C. and Cui, Z. and Zhu, Y. and Adams, J. J.}, year={2015}, pages={1878–1879} }
 @article{di_yao_ye_cui_yu_ghosh_zhu_gu_2015, title={Stretch-Triggered Drug Delivery from Wearable Elastomer Films Containing Therapeutic Depots}, volume={9}, ISSN={["1936-086X"]}, DOI={10.1021/acsnano.5b03975}, abstractNote={Mechanical force-based stimulus provides a simple and easily accessible manner for spatiotemporally controlled drug delivery. Here we describe a wearable, tensile strain-triggered drug delivery device consisting of a stretchable elastomer and microgel depots containing drug loaded nanoparticles. By applying a tensile strain to the elastomer film, the release of drug from the microdepot is promoted due to the enlarged surface area for diffusion and Poisson's ratio-induced compression on the microdepot. Correspondingly, both sustained drug release by daily body motions and pulsatile release by intentional administration can be conveniently achieved. Our work demonstrated that the tensile strain, applied to the stretchable device, facilitated release of therapeutics from microdepots for anticancer and antibacterial treatments. Moreover, polymeric microneedles were further integrated with the stretch-responsive device for transcutaneous delivery of insulin and regulation of blood glucose levels of chemically induced type 1 diabetic mice.}, number={9}, journal={ACS NANO}, author={Di, Jin and Yao, Shanshan and Ye, Yanqi and Cui, Zheng and Yu, Jicheng and Ghosh, Tushar K. and Zhu, Yong and Gu, Zhen}, year={2015}, month={Sep}, pages={9407–9415} }