# Equal contributions; *Corresponding authors

[32] S. Cui, Y. Lu, D. Kong, H. Luo, L. Peng, G. Yang, H. Yang, K. Xu*, “Laser Direct Writing of Ga2O3/Liquid Metal-based Flexible Humidity Sensors”, Opto-Electronic Advances, 6, 220172 (2023). [PDF] Selected as Cover

[31] J. Yu, H. Yang, J. Wu, Y. Wu, K. Xu*, “Ultrafast Laser Fabrication of Surface-Enhanced Raman Scattering Sensors”, Opto-Electronic Engineering, in press (2023).

[30] H. Luo, Y. Lu, Y. Xu, G. Yang*, S. Cui, D. Han, Q. Zhou, X. Ouyang, H. Yang, T. Cheng, K. Xu*, “A Fully Soft, Self-Powered Vibration Sensor by Laser Direct Writing”, Nano Energy, 103, 107803 (2022). [PDF]

[29] J. Yu, J. Wu, H. Yang, P. Li, J. Liu, M. Wang, J. Pang, C. Li, C. Yang, K. Xu, “Extremely Sensitive SERS Sensors Based on a Femtosecond Laser Fabricated Superhydrophobic/-philic Microporous Platform”, ACS Applied Materials & Interfaces, 14(38),43877 (2022). [PDF]

[28] Y. Lu, G. Yang*, Y. Shen, H. Yang, K. Xu*, “Multifunctional Flexible Humidity Sensor Systems towards Noncontact Wearable Electronics”, Nano-Micro Letters, 14(1), 150 (2022). [PDF].

[27] D. Kong, G. Yang,* G. Pang, Z. Ye, H. Lv, Z. Yu,F. Wang, X V. Wang, K. Xu, H. Yang, “Bioinspired Co-Design of Tactile Sensor and Deep Learning Algorithm for Human–Robot Interaction”, Advanced Intelligent Systems, 4(6), 2200050 (2022). [PDF] [Video], Selected as Cover [Link].

[26] Z. Ye, G. Pang, K. Xu, Z. Hou, H. Lv, Y. Shen, G. Yang*, “Soft Robot Skin With Conformal Adaptability for On-Body Tactile Perception of Collaborative Robots”, IEEE Robotics and Automation Letters, 7(2), 5127-5134 (2022). [PDF][Video]

[25] K. Xu, Y. Fujita, Y. Lu, S. Honda, M. Shiomi, T. Arie, S. Akita, K. Takei*, “A Wearable Body Condition Sensor System with Wireless Feedback Alarm Functions”, Advanced Materials, 33(18), 2008701 (2021). [PDF] Research News [Link] Selected as Cover [Link]. ESI Highly Cited Paper (top 1%))

[24] H. Luo, G. Yang, K. Xu*, Z. Ye, H. Yang, G. Yang*, “A Fully Printed Flexible Sensor Sheet for Simultaneous Proximity-Pressure-Temperature Detection”, Advanced Materials Technologies, 6(11), 2100616 (2021). [PDF] Selected as Cover [Link]

[23] W. Heng, G. Yang*, W. S. Kim, K. Xu*, “Emerging Wearable Flexible Sensors for Sweat Analysis”, Bio-Design and Manufacturing, 5, 64-84 (2022). [PDF]

[22] Z. Yin, K. Xu*, S. Jiang, D. Luo, R. Chen, C. Xu, P. Shum, Y. Liu*, “Recent Progress on Two-Dimensional Layered Materials for Surface Enhanced Raman Spectroscopy and Their Applications”, Materials Today Physics, 18, 100378 (2021). [PDF]

[21]Y. Huan, X. Guan, J. Pang, Z. Zheng, C. Li, C. Yang, M. Wang, K. Xu*, “Femtosecond Laser Patterned Superhydrophobic/Hydrophobic SERS Sensors for Rapid Positioning Ultratrace Detection”, Optics Express, 29(11), 16904-16913 (2021). [PDF] Highlighted as an Editor’s Pick. 

[20] Y. Lu, K. Xu, M. Yang, S. Tang, T. Yang, Y. Fujita, S. Honda, T. Arie, S. Akita, Y. Chueh, K. Takei*, “Highly Stable Pd/HNb3O8-Based Flexible Humidity Sensor for Perdurable Wireless Wearable Applications”, Nanoscale Horizons, 6, 260-270  (2021). [PDF]

[19] Y. Lu, Y. Fujita, S. Honda, S. H. Yang, Y. Xuan, K. Xu, T. Arie, S. Akita, K. Takei, “Wireless and Flexible Skin Moisture and Temperature Sensor Sheets toward the Study of Thermoregulator Center”, Advanced Healthcare Materials, 10(17) (2021). [PDF] Selected as Cover [Link] 

[18] K. Xu, Y, Lu, K. Takei*, “Flexible Hybrid Sensor Systems with Feedback Functions”, Advanced Functional Materials, 31(39), 2007436 (2021). [PDF]. Research News [Link]

[17] Y. Lu#, K. Xu#, L. Zhang, M. Deguchi, H. Shishido, T. Arie, R. Pan, A. Hayashi, L. Shen, S. Akita,  K. Takei*,”Multimodal Plant Healthcare Flexible Sensor System”, ACS Nano, 14 (9), 10966-10975 (2020).[PDF] Research news on Nanowerk [Link], [Link], NBIC [Link]. 

Multimodal Plant Healthcare Sensor System

[16] K. Xu, Y. Lu, T. Yamaguchi, T. Arie, S. Akita, K. Takei*, “Highly Precise Multifunctional Thermal Management-based Flexible Sensing Sheets”, ACS Nano, 13 (12), 14348-14356 (2019). [PDF] Highlighted on Nanowerk [Link] and Science X [Link]

[15] K. Xu, R. Zhou, K. Takei*, M. Hong*, “Toward Flexible Surface-Enhanced Raman Scattering (SERS) Sensors for Point-of-Care Diagnostics”, Advanced Science, 6(16), 1900925-1900947 (2019). [PDF] (ESI Hot paper (top 0.1%) & ESI Highly Cited Paper (top 1%))  Research news in Chinese. [Link]

   The most accessed paper in August 2019 (Top 10) and among the top 10% most downloaded papers between 01/2018 and 12/2019.

[14] K. Xu, Y. Lu, K. Takei*, “Multifunctional Skin-Inspired Flexible Sensor Systems for Wearable Electronics”, Advanced Materials Technologies, 4(3), 1800628-1800652 (2019). [PDF(ESI Hot paper (top 0.1%) & ESI Highly Cited Paper (top 1%))

   The most accessed paper from 01/2019 to 12/2019 (Ranking 1)  and Best of Advanced Materials Technologies 2019 [Link].

[13] K. Xu, Y. Lu, S. Honda, T. Arie, S. Akita, K. Takei*, “Highly Stable Kirigami-Structured Stretchable Strain Sensors for Perdurable Wearable Electronics”, Journal of Materials Chemistry C, 7, 9609-9617  (2019). [PDF]

   Selected as 2019 Journal of Materials Chemistry C Most Popular Articles [Link]. 

[12] H. Yang, K. Xu, Y. Xue, D. Y. Fan, Y. Cao, W. Xue, J. H. Pang, C. W. Xu, “Femtosecond Laser Fabricated Elastomeric Superhydrophobic Surface with Stretching-Enhanced Water Repellency”, Nanoscale Research Letters, 14(1), 333 (2019).[PDF][Video]

[11] X. Y. Zhao, Z. Tao, W. Yang, K. Xu, L. Wang, Y. Jiang, Q. Zhang, Z. Gao, B. Mi, M. Hong, W. Deng, “Morphology and Electrical Characteristics of Polymer: Fullerene Films Deposited by Electrospray”, Solar Energy Materials and Solar Cells, 183, 137-145 (2018). [PDF]

[10] K. Xu, H. Yan, C. F. Tan, Y. Y. Lu, Y. Li, G. W. Ho, R. Ji, M. Hong, “Hedgehog Inspired CuO Nanowires/Cu2O Composites for Broadband Visible-Light-Driven Recyclable Surface Enhanced Raman Scattering”, Advanced Optical Materials, 6(7), 1701167-1701175 (2018). [PDF]

        Highlighted on Advanced Science News.

[9]   X. Q. Wang, C. F. Tan, K. H. Chan, K. Xu, M. Hong, S. W. Kim, G. W. Ho, “Nanophotonic-Engineered Photothermal Harnessing for Waste Heat Management and Pyroelectric Generation,” ACS Nano, 11(10), 10568-10574 (2017). [PDF]

[8]  K. Xu, Z. Wang, C. F Tan, N. Kang, L. W. Chen, L. Ren, E. S. Thian, Ghim W. Ho, R. Ji, M. Hong, “Uniaxially Stretched Flexible Surface Plasmon Resonance Film for Versatile Surface Enhanced Raman Scattering Diagnostics,” ACS Applied Materials Interfaces, 9 (31), 26341–26349 (2017). [PDF] [Video]

[7]  K. Xu, J. Wu, C. F. Tan, G. W. Ho, A. Wei, M. Hong, “Ag-CuO-ZnO Metal-semiconductor Multiconcentric Nanotubes for Achieving Superior and Perdurable Photodegradation,” Nanoscale, 9, 11574-11583(2017). [PDF]

[6]  K. Xu, C. Zhang, T. H. Lu, P. Wang, R. Zhou, R. Ji, M. Hong, “Hybrid Metal-insulator-metal Structures on Si Nanowires Array for Surface Enhanced Raman Scattering,” Opto-Electronic Engineering, 44(2), 185-191 (2017). [PDF]

[5]   P. Wang, Z. Liu, K. Xu, D. J. Blackwood, M. H. Hong, A. G. Aberle, R.  Stangl, I. M. Peters, “Periodic Upright Nanopyramids for Light Management Applications in Ultrathin Crystalline Silicon Solar Cells,” IEEE Journal of Photovoltaics 7 (2), 493-501 (2017). [PDF]

[4]   K. Xu, C. Zhang, R. Zhou, R. Ji, M. Hong, “Hybrid Micro/nano-structure Formation by Angular Laser Texturing of Si Surface for Surface Enhanced Raman Scattering,” Optics Express 24 (10), 10352-10358 (2016). [PDF]

[3]   J. M, Y. Yu, K. Xu, R. Ng, Z. G. Dong, L. C. Wang, S. S. Dinachali, M. Hong, J. K. Yang, “Stacking of Colors in Exfoliable Plasmonic Superlattices,” Nanoscale, 8(42), 18228-18234 (2016). [PDF]

[2]   W. Huang, J. Zhao, Q. Kang, K. Xu, Z. Yu, J. Wang, Y. W. Ma, W. Huang, “Preparation of Three-Dimensional Carbon Microtube/Carbon Nanotube Composites and Their Application in Supercapacitor,” Acta Physico-Chimica Sinica, 28 (10), 2269-2275 (2012). [PDF]

[1]   W. Mao, Y. Li, G. Bao, X. Li, K. Xu,Y. Yang, “The Design of Automatic Counter for Michelson Interferometer,” Computer Knowledge and Technology, 8(12) 8308-8310 (2013). [PDF]