公开(公告)号：US20210114875A1

公开(公告)日：2021-04-22

申请号：US16844213

申请日：2020-04-09

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Seokhoon AHN ,  Se Gyu JANG ,  Myung Jong KIM ,  Hun-Su LEE ,  Soul-Hee LEE ,  Min Sung KANG ,  Sangseok LEE ,  Yongho JOO

IPC: C01B21/064

Abstract: Disclosed is a method of purifying boron nitride nanotubes through a simplified process. Specifically, the method includes preparing a starting solution containing boron nitride nanotubes (BNNTs), a dispersant and a solvent, centrifuging the starting solution or allowing the starting solution to stand to collect a supernatant, adding an acid to the supernatant and filtering a resulting product.

公开(公告)号：US20200287714A1

公开(公告)日：2020-09-10

申请号：US16739526

申请日：2020-01-10

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Sang Wook HAN ,  Sung Wook MOON ,  Yong Su KIM ,  Sang Yun LEE ,  Young Wook CHO ,  Min Sung KANG ,  Ji Woong CHOI

IPC: H04L9/08

Abstract: This specification discloses a quantum public-key cryptosystem. The quantum public-key cryptosystem may use two rotation operators R{circumflex over (n)}(θ) and R{circumflex over (m)}(φ) satisfying a cyclic evolution. The two rotation operators R{circumflex over (n)}(θ) and R{circumflex over (m)}(φ) do not have a commutation relation or an anti-commutation relation with each other. The commutation relation or the anti-commutation relation is established when either of the following conditions is satisfied: θ=2iπ, φ=2jπ, or {circumflex over (n)}·{circumflex over (m)}=1 (i, j=integer), and θ=(2k+1)π, φ=(2l+1)π, or {circumflex over (n)}·{circumflex over (m)}=0 (k, l=integer).