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| Investigation of the elasticity of polymer nanoparticle by vibrating scanning polarization force microscopy | |
| Zhang, LJ（张立娟）; Wang, HB（王化斌）; Zhang, LJ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China | |
| 2006 | |
| Source Publication | CHINESE PHYSICS LETTERS
 |
| ISSN | 0256-307X |
| Volume | 23Issue:8Pages:2315 |
| Abstract | The elasticity of an individual polymer nanoparticle may be greatly different from that of the bulk one. Understanding the properties of individual particles such as elasticity and deformation under external forces is of great importance in controlling the final structures and functions of bulk materials. We study the compression properties of single polyethylenimine (PEI) particles using vibrating scanning polarization force microscopy. By controllably imaging PEI particles at different vibration amplitude set-point values, it is demonstrated that we can compress the single PEI nanoparticle with an atomic force microscopy tip in different loads. Based on the force-height and force-strain curves obtained, Young's moduli of PEI (5-160 MPa) in three force regions are estimated according to the Hertz model. The results indicate that PEI has excellent elasticity, which may contribute to its high efficiency as vectors in gene transfection. |
| Subject Area | Physics |
| Indexed By | sci |
| Language | 英语 |
| Funding Project | 应物所项目组 |
| WOS ID | WOS:000239365500096 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/8085 |
| Collection | 中科院上海应用物理研究所2004-2010年 |
| Corresponding Author | Zhang, LJ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang, LJ,Wang, HB,Zhang, LJ . Investigation of the elasticity of polymer nanoparticle by vibrating scanning polarization force microscopy[J]. CHINESE PHYSICS LETTERS,2006,23(8):2315. |
| APA | Zhang, LJ,Wang, HB,&Zhang, LJ .(2006).Investigation of the elasticity of polymer nanoparticle by vibrating scanning polarization force microscopy.CHINESE PHYSICS LETTERS,23(8),2315. |
| MLA | Zhang, LJ,et al."Investigation of the elasticity of polymer nanoparticle by vibrating scanning polarization force microscopy".CHINESE PHYSICS LETTERS 23.8(2006):2315. |
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