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A study on the physical unclonable function device based on nano-electro mechanical switch, developed by Hwang Gyu-man (Master’s course) from Prof. Choi Yang-kyu’s lab, was published in ACS Nano and at the same has been introduced in Science Daily, phys.org, EurekAlert.

PUF (Physical Unclonable Function), a hardware (HW) -based security technology that solves the structural problems of software-based security solutions and is easily applicable to IoT devices, is attracting attention. However, the existing PUF has a disadvantage that its performance deteriorates due to its surrounding environment. To improve this, PUF which can operate in extreme environment while guaranteeing basic operation characteristics (randomness, uniqueness and repeatability) by using nano-electro mechanical switch was developed. It is expected to be used as a security module for the military or space industry, which is subject to extreme environmental conditions.

Journal : ACS Nano

Paper : Nano-electromechanical Switch Based on a Physical Unclonable Function for Highly Robust and Stable Performance in Harsh Environments

Author : Hwang Gyu-man (Master’s course) (Prof. Choi Yang-kyu’s lab)

Link : http://pubs.acs.org/doi/abs/10.1021/acsnano.7b06658

Prof. Shin, Seung-Won and Prof. Kim, Yong-Dae’s joint research team won the Grand Prize at the 2017 Cyber Security Paper Contest.

The title of the paper is “Demystifying the Dark Web: Understanding the Underground Online Society”. 

In 2017 Cyber Security Paper Contest, a total of 117 papers were submitted from Seoul National University, POSTECH, and Korea University, etc.

In this competition, joint research team of Prof. Shin Seung-won(KAIST EE), Prof. Kim Yong Dae(KAIST EE) and Prof. Son Soo-el(KAIST CS) won the Grand Prize(3,000,000 prize) with the paper “Demystifying the Dark Web: Understanding the Underground Online Society”.  (1st author : Yoon Chang-hoon, Advisor : Professor Shin Seung-Won)

 This paper analyzes the ecosystem and internal operating system of Dark Web Market for the first time, collecting and analyzing large amount of data (about 27 million pages) on the dark web which is a social problem in recent years.

Currently, the research team is collecting large amounts of data related to Dark Web, and is continuing to conduct research based on it. They are also developing a system to automatically detect and track contents related to crime and cyber security in the Dark Web.

– Event: Cyber ​​Security Paper Contest

– Place: The K Hotel, Yangjae-dong

– Date and time: November 21, 2017

– Title: “Demystifying the Dark Web: Understanding the Underground Online Society”

– Author: Yoon Chang-hoon, Kim Kwan-woo, Lee Chan-hee, Son Soo-el, Kim Yong-dae, Shin Seung-won

A joint research conducted by Professor Choi Sung-Yool of our department, and Professor Im Sung-Gap of Dept. of Chemical and Biomolecular Engineering was published as a Front cover paper on Nov. 17 in Advanced Functional Materials.

The title of this paper is ‘Low-Power Nonvolatile Charge Storage Memory Based on MoS₂ and an Ultrathin Polymer Tunneling Dielectric’, and the author is M.S graduate Woo Myung Hoon (1st co-author, now Samsung Electronics), Ph.D candidate Jang Byoung Chul (1st co-author), Ph.D candidate Choi Joon-hwan, Professor Im Sung-Gap (co-author), and Professor Choi Sung-Yool (correspondent author).

Jorunal : Advanced Functional Materials

Title : Low-Power Nonvolatile Charge Storage Memory based on MoS₂ and an Ultrathin Polymer Tunneling Dielectric

Author : M.S graudate Woo Myung Hoon (1st co-author), Ph.D candidate Jang Byoung Chul (1st co-author), Professor Choi Sung-Yool (correspondent author)

Link : http://onlinelibrary.wiley.com/doi/10.1002/adfm.201703545/full

Yongchang Choi from Prof. Hyung-Joun Yoo’s lab, received a Best Paper Award from ISSCC 2017.

The award paper is A Fully-Digital Phase Modulator with Phase Calibration Loop for High Data-Rate Systems.

Congratulations to Yongchang Choi.

Conference: 2017 International SoC Design Conference (ISOCC)

Date: 2017.11.05 ~ 2017.11.08

Place: Grand Hilton Seoul, Seoul, Korea

Prize Winner: Ph.D Student Yongchang Choi (Advisor: Prof. Hyung-Joun Yoo)

Paper: A Fully-Digital Phase Modulator with Phase Calibration Loop for High Data-Rate Systems

Authors: Yongchang Choi, Prof. Hyung-Joun Yoo

Award: 2017 IEIE Best Paper Award

MS candidate Cho Sang Hyun (Advisor: Prof. KingJongHwan), Dr. Lee Won Hyung got Best Student Paper Award from IEE Int’l Conf. on Systems, Man, and Cybernetics (SMC) held on 10/5~10/8 at Banff, Canada.

The awarded paper is “Implementation of Human-Robot VQA Interaction System With Dynamic Memory Networks”

Congratulations!

Reasearch on the fabrication of memristor-based fabric non-volatile logic computing circuits by Ph.D candidate Bae, Hak-Yeol(Prof. Choi, Yang-Gyu) and Ph.D candidate Jang, Byung-cheol (Prof. Choi, Seong-Yool) has been published in Nano Letters. 

Fabric type memristor devices were fabricated by coating tens of nano metal layers and insulating film layers on the yarn making clothes, and lattice.

This fabric type memristor device has excellent flexibility and overcomes the limitation of conventional von Neumann computing method in order to minimize battery consumption of wearable electronic device. It makes static power consumption close to 0 W, so it is expected that the application value is high as a wearable element.

    – Journal : Nano Letters

    – Title : Functional Circuitry on Commercial Fabric via Textile-Compatible Nanoscale Film Coating Process for Fibertronics       

    – Authors : Ph.D candidate Bae, Hak-Yeol(Prof. Choi, Yang-Gyu), Ph.D candidate Jang, Byung-cheol (Prof. Choi, Seong-Yool)

    – Link : http://pubs.acs.org/doi/abs/10.1021/acs.nanolett.7b03435

Ph.D student Hagyoul Bae (Advisor: Prof. Yang-Kyu Choi) got a runner-up prize at ‘2017 SK Hynix Innovative Idea Contest for Semiconductors’

This contest was carried out for the first time this year and 1 grand prize, 2 runner-up prizes, 3 participation prizes were nominated.

At this contest, Ph.D student Hagyoul Bae was nominated by suggesting new cell and array structure that possesses higher degree of integration and  improved property of memory compared to existing DRAM to overcome limitations for scaling.

The awards ceremony will be held at Seoul Grand Walkerhill hotel on October 11th (2017) with CEO and director of future technology institute of SK Hynix.