Presenter：Wenlong Cheng 教授 (澳大利亚Monash大学)
Topic：Organically-Capped Metal Nanoparticles forSoft Plasmonics, Soft Electronics and Targeted Theranostics
Time：02:30 PM, June 16th
Location：909-B
Abstract
In this talk, Iwill briefly discuss our recent research activities in rational design andapplications of organically-capped metal nanoparticles. Monodispersed metalnanoparticles are synthesized with controlled sizes and shapes, which are thenmodified by soft ligands including DNA, polymer and alkyl molecules. We havesuccessfully applied such soft ‘meta-atoms’ to three major directions: (1)assembling soft plasmonic nanoparticle superlattice sheets (soft plasmenesheets) 1-3; (2) fabricating soft elastic conductors (electronicskins) for wearable sensors4-5; (3) DNA aptamer-targeted andlight-controlled drug delivery.
Firstly, I willdescribe synthesis of soft ‘meta-atoms’ using nanospheres, nanorods, nanocages,nanocubes, and nanowires)1. Secondly, I will discuss how we manipulatethe notoriously-difficult-to-manipulate ‘meta-atoms’ to form free-standingthinnest possible superlattice nanosheets2-3, which could be used asa new-class SERS substrate which is soft, elastic and surface-attachable. Thisenabled the direct chemical identification on topologically complex surfacessuch as banknotes and coins, and application as new-generation ofanti-counterfeit security labels. Then I will discuss how we apply ultrathingold nanowires to the design of electronic skin materials for wearable sensorsenabling the monitoring of biological signals in real-time in-situ in awireless fashion. Time permitting, I will also briefly mention our recentresearch on DNA aptamer-targetted plasmonic imaging and therapy.
References
1.Shawn,J. Tan, Michael J. Campolongo, Dan Luo and Wenlong Cheng*, Building PlasmonicNanostructures with DNA. Nature Nanotechnology 2011, 6, 268-276.
2.WenlongCheng, Michael J. Campolongo, Judy J. Cha, Shawn J. Tan, Christopher C. Umbach,David A. Muller, and Dan Luo, Free-Standing Nanoparticle Superlattice SheetsControlled by DNA. Nature Materials, 2009, 8, 519-525.
3.KaeJye Si, Debabrata Sikdar, Yi Chen, Zaiquan Xu, Yue Tang, Wei Xiong, PengzhenGuo, Shuang Zhang, Yuerui Lu, Qiaoliang Bao, Weiren Zhu, Malin Premaratne, andWenlong Cheng*, Giant Plasmene Nanosheets, Nanoribbons, and Origami. ACS Nano,2014, 2014, 8, 11086�11093.
4.YiChen, Zi Ouyang, Min Gu and Wenlong Cheng*, Mechanically Strong, OpticallyTransparent, Giant Metal Superlattice Nanomembranes From Ultrathin GoldNanowires. Advanced Materials 2013, 25, 80-85.
5.ShuGong, Willem Schwalb, Yongwei Wang, Yi Chen, Yue Tang, Jye Si, Bijan Shirinzadehand Wenlong Cheng*, A wearable and highly sensitive pressure sensor withultrathin gold nanowires. Nature Communications, 2014, 5, 3132.
Biography
Wenlong Cheng isa professor in the Department of Chemical Engineering at Monash University,Australia. He earned his PhD from Chinese Academy of Sciences in 2005 and hisBS from Jilin University, China in 1999. He held positions in the Max PlanckInstitute of Microstructure Physics and the Department of Biological andEnvironmental Engineering of Cornell University before joining the MonashUniversity in 2010. His research interest lies at the Nano-Bio Interface,particularly addressing plasmonic nanomaterials, DNA nanotechnology,nanoparticle anticancer theranostics and electronic skins. He has published ~70papers including 3 in Nature Nanotech, 1 in Nature Mater and 1 in Nature Comm.
Contact：Prof. Qiaoliang Bao
（责任编辑：张伶 邮箱：4626963545@qq.com）
