Optical Properties of Zn-based Semiconductor Nanoparticles and Application in Two-barcode Encryption
Main Article Content
Abstract
Mn-doped ZnS (ZnS/Mn) nanoparticles synthesized by sono-chemical co-precipitation are combined with ZnO nanoparticles synthesized by sol-gel method for application in two-barcode encryption. Nanoparticles are mixed together in different mass proportions of ZnO: ZnS/Mn respectively being 5: 1, 10: 1, 15: 1, 20: 1, 25: 1.30 : 1 and 35: 1, before being pressed in 1 cm diameter, 1 mm thick KBr pellets. The photoluminescence (PL) of the tablet shows that the mass proportion of two materials could be distinghuished by the proportion of the PL intensities at 515 nm and 600 nm, which promises potential manufacturing ability two-substant/two-barcode information storage systems for civil security applications.
Keywords: Photoluminescent encryption, Zn-based semiconductor, civil application.
References
[2] Guimiao Lin, Feng Yin, Ken-Tye Yong. The future of quantum dots in drug discovery. Expert opinion on Drug Discovery. (2014) 9(9) 1-4.
[3] Jennifer M Knipe, Jonathan T Peters, Nichonlas A Peppas. Theranostic agents for intracellular gene delivery with spatiotemporal imaging. Nano Today. (2013) 8(1) 21-38.
[4] Hai-Qiao Wang, Jian-Hao Wang, Yong-Qiang Li, Xiu-Qing Li, Tian-Cai Liu, Zhen-Li Huang, Yuan-Di Zhao. Multi-color encoding of polystyrene microbeads with CdSe/ZnS quantum dots and its application in immunoassay. J. Colloids and Interface Science (2007) 316 622-627.
[5] Yixi Liu, Le Liu, Yonghong He, Liang Zhu, Hui Ma. Decoding of quantum dots encoded microbeads using a hyperspectral fluorescence imaging method. Anal. Chem. (2015) 10.1021/acs.analchem.5b00398
[6] http://www.nanocotechnologies.com
[7] Rodrigo Marques Ferreira, Maycon Motta, Augusto Batagin-Neto, Carlos Frederico de Oliveira Graeff, Paulo Noronha Lisboa-Filho, Francisco Carlos Lavarda. Theorical investigation of geometric configurations and vibrational spectra in citric acid complexes. Materials Research. (2014) 17(3) 1-7.
[8] M. Ghiasi, A. Malekzadeh. Synthesis of CaCO3 nanoparticles via citrate method and sequential preparation of CaO and Ca(OH)2 nanoparticles. Cryst. Res. Technol. (2012) 47(4) 471-478.
[9] Tran Thi Quynh Hoa, Le Thi Thanh Binh, Le Van Vu, Nguyen Ngoc Long, Vu Thi Hong Hanh, Vu Duc Chinh and Pham Thu Nga. Luminescent ZnS:Mn/thioglycerol and ZnS:Mn/ZnS core/shell nanocrystals: Synthesis and characteization. Optical Materials. (2012) 35 136-140.