CAS OpenIR  > 中科院上海应用物理研究所2004-2010年
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 PublicationCHINESE PHYSICS LETTERS
ISSN0256-307X
Volume23Issue:8Pages:2315
AbstractThe 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 AreaPhysics
Indexed Bysci
Language英语
Funding Project应物所项目组
WOS IDWOS:000239365500096
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/8085
Collection中科院上海应用物理研究所2004-2010年
Corresponding AuthorZhang, 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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