The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 25, 2022
Filed:
Jul. 30, 2021
Jinling Haiguan Technical Center, Nanjing, CN;
Jiangsu Yangtze Testing and Certification Co., Ltd., Nanjing, CN;
Ying Hong, Nanjing, CN;
Rong Gao, Nanjing, CN;
Jinling Wang, Nanjing, CN;
Guosong Chen, Nanjing, CN;
Yuanyuan Zhu, Nanjing, CN;
Jing Fang, Nanjing, CN;
Ling Gao, Nanjing, CN;
Weijian Shen, Nanjing, CN;
Wei An, Nanjing, CN;
Jiansong Chen, Nanjing, CN;
JINLING HAIGUAN TECHNICAL CENTER, Nanjing, CN;
JIANGSU YANGTZE TESTING AND CERTIFICATION CO., LTD., Nanjing, CN;
Abstract
Concealed mark preparation with core-shell luminosphores for customs security check system and application thereof, to address that infrared luminescent materials have not been used in senseless customs clearance field, absorption cross sections of infrared luminescent materials currently available are not big enough, and upconversion luminescence intensity thereof is low, consequently, the luminescent marks are not clear enough to recognize marked abnormal luggage, and provide a following solution: step 1: preparing TiQ; step 2: preparing Ag@TiOcomposite nanoparticles; step 3: preparing Ag@TiQ@NaYF:Yb, Erluminescent nanoparticles; step 4: making concealed luggage marks. Ag@TiQ@NaYF:Yb, Erluminescent nanoparticles according to the present invention has superior luminescent intensity than pure NaYF:Yb, Er, and luminescent materials prepared in this method can be disseminated in organic solution such as ethanol and methanol for use in preparing concealed marks to mark susceptible luggage and provides a research direction for senseless, intelligent and safe customs clearance.