Korea Institute of Science and Technology

Samsung Electronics Co., Ltd.

Dong-Hyun Kang

Byung Chul Lee

Dae-Young Kim

Jong-han Lim

Tae Song Kim

In-Tae Kang

Shinyong Shim

Jin Soo Park

Hyung Min Kim

Ki Joo Pahk

Dong Jun Kim

Maesoon Im

Hyejeong Seong

Hae Youn Kim

A flexible ultrasound transducer according to an embodiment of the present disclosure includes a substrate having a central part and a plurality of extended parts extending from the central part; an ultrasound probe disposed at the central part of the substrate to acquire an ultrasound image of a region of interest; and a focused ultrasound output unit disposed at the extended parts of the substrate to output a focused ultrasound to the region of interest, wherein the focused ultrasound output unit disposed at the extended parts of the substrate has a flexible property and is deformable. According to the structure of an embodiment, it is possible to simultaneously achieve ultrasound imaging and ultrasonic therapy such as lesion stimulation or removal through focused ultrasound, and adjust the focal position of focused ultrasound or improve the focal sensitivity through flexible movement.

Flexible ultrasound transducer and method for manufacturing the same

The present disclosure relates to a method for determining a relative position between arrays of a flexible array device. The flexible array device according to an embodiment includes a plurality of arrays arranged at a predetermined interval in a deformable substrate, and the method includes measuring the first capacitance between adjacent arrays, measuring the second capacitance between the adjacent arrays after deformation of the substrate, and determining a relative position between the adjacent arrays based on the first capacitance measurement value and the second capacitance measurement value. According to an embodiment, the relative position between the arrays may be determined by measuring the capacitance between the adjacent arrays of the plurality of arrays arranged in the deformable substrate and measuring a change in capacitance caused by the deformation (contraction, relaxation, bending) of the substrate.

Method for determining relative position between arrays of flexible array device

A method of fabricating a capacitive micromachined ultrasonic transducer (CMUT) according to one aspect of the present invention may include forming, on a semiconductor substrate, a first region implanted with impurity ions at a first average concentration and a second region implanted with no impurity ions or implanted with the impurity ions at a second average concentration lower than the first average concentration, forming an insulating layer by oxidizing the semiconductor substrate wherein the insulating layer includes a first oxide layer having a first thickness on at least a part of the first region and a second oxide layer having a second thickness smaller than the first thickness on at least a part of the second region, and forming a membrane layer on the insulating layer such that a gap is defined between the second oxide layer and the membrane layer.

Capacitive micromachined ultrasonic transducer and method of fabricating the same

Provided is a method for matching antenna impedance in a wireless communication system. The method includes determining an approximate reflection coefficient based on an input signal and an output signal of a bidirectional coupler connected to a signal path of an antenna; determining an antenna impedance matching parameter corresponding to the determined approximate reflection coefficient by using a lookup table; and performing antenna impedance matching based on the antenna impedance matching parameter.

System apparatus and method for matching antenna impedance in a wireless communication system

Apparatus and method for matching antenna impedance in wireless communication system

A method for preparing a tightly sealed 3D lipid structure and a tightly sealed 3D lipid structure prepared thereby is disclosed. The method allows for simpler and more convenient preparation of an artificial biomembrane structure on a substrate using a lipid material, by using a plurality of transparent microwells formed on the substrate, and observation inside the microwells. In addition, a spherical 3D artificial single bilayer structure may be sealed very tightly through a simple method of changing the frequency of an electric field applied vertically to the microwells having a lipid layer formed. Through this, a biomimetic 3D structure having the structural and/or functional characteristics of a cell membrane constituting a cell can be provided more effectively.

Preparing method of tightly sealed 3D lipid structure and tightly sealed 3D lipid structure prepared thereby

To synchronize symbol timing in a communication system, time-domain signals are generated by performing an IFFT on frequency-domain signals. Positions of power peaks are detected by analyzing a channel impulse response (CIR) of the time-domain signals. Channel state informations are provided by analyzing a channel state, such that each channel state information corresponds to each position of the power peaks. A proper symbol start position is determined based on the channel state informations.

Growing community of inventors

Seoul, South Korea

Dong-Hyun Kang