Abstract: Provided is a door lock. The door lock includes a door lock body installed on a door and having an opening/closing device; a memory to store a door lock identifier including a door recognition code and a door lock ID corresponding to the door recognition code; an antenna to sequentially receive a first RF signal and a second RF signal from a reader; and a control unit configured to transmit the door recognition code to the reader and configured to determine whether the door lock ID provided from the door lock management server through the reader matches the previously assigned door lock ID of the door lock identifier to control the opening/closing device.

Abstract: A security device is provided. The security device includes: a communication antenna for receiving a communication signal; and a random number generator for newly generating a random number based on the communication signal received in the communication antenna.

Abstract: Provided is a secure communication device. The secure communication device include: an audio input terminal; an antenna for receiving an RF signal; and a control unit that encrypts an audio signal inputted to the audio input terminal based on the RF signal received by the antenna, and transmits the encrypted audio signal to a paired receiver through the antenna.

Abstract: Provided is a door lock.

Abstract: A tactile perception system is provided. The tactile perception system includes a storage unit storing tactile data and feature information corresponding to the tactile data, a sensing unit sensing surface characteristics of an object to generate a sensing signal, an extraction unit extracting sensing information from the sensing signal generated by the sensing unit, and a matching unit extracting a piece of feature information, which is matched with the sensing information, from the feature information stored in the storage unit and extracting a piece of tactile data, which corresponds to the piece of feature information, from the tactile data stored in the storage unit.

Abstract: A method for manufacturing graphene having a wrinkle pattern is provided. The method includes forming a wrinkle providing layer having a first thermal expansion coefficient on one surface of a graphene layer, forming a substrate having a second thermal expansion coefficient on one surface of the wrinkle providing layer, and performing a heat treatment to form wrinkles on the wrinkle providing layer by a difference between the first and second thermal expansion coefficients, thereby forming wrinkle patterns on the graphene layer.

Abstract: A conductive structure is provided. The conductive structure includes a template including a skeleton and a pore therein and having flexibility, and a conductive material aggregated and formed on the skeleton and in the pore.

Abstract: A graphene touch sensor is provided. The graphene touch sensor includes a first substrate, a first pattern disposed on the first substrate and having a first protruding region and a first concave region, a second substrate on the first substrate, a second pattern disposed on the second substrate to face the first pattern and having a second protruding region and a second concave region, and a graphene layer between the first pattern and the second pattern.

Abstract: A conductive structure is provided. The conductive structure includes a template including a skeleton and a pore therein and having flexibility, and a conductive material aggregated and formed on the skeleton and in the pore.

Abstract: A method for manufacturing graphene having a wrinkle pattern is provided. The method includes forming a wrinkle providing layer having a first thermal expansion coefficient on one surface of a graphene layer, forming a substrate having a second thermal expansion coefficient on one surface of the wrinkle providing layer, and performing a heat treatment to form wrinkles on the wrinkle providing layer by a difference between the first and second thermal expansion coefficients, thereby forming wrinkle patterns on the graphene layer.

Abstract: A tactile perception system is provided. The tactile perception system includes a storage unit storing tactile data and feature information corresponding to the tactile data, a sensing unit sensing surface characteristics of an object to generate a sensing signal, an extraction unit extracting sensing information from the sensing signal generated by the sensing unit, and a matching unit extracting a piece of feature information, which is matched with the sensing information, from the feature information stored in the storage unit and extracting a piece of tactile data, which corresponds to the piece of feature information, from the tactile data stored in the storage unit.

Abstract: A graphene touch sensor is provided. The graphene touch sensor includes a first substrate, a first pattern disposed on the first substrate and having a first protruding region and a first concave region, a second substrate on the first substrate, a second pattern disposed on the second substrate to face the first pattern and having a second protruding region and a second concave region, and a graphene layer between the first pattern and the second pattern.