Seongnam, South Korea
Seongnam, South Korea

Gachon University is an academic institute located in South Korea. The current structure of Gachon university is the result of a merger between four existing universities. Gachon University of Medicine and Science and Gachon-gil College merged in 2007, Kyungwon University and Kyungwon College merged in 2007, and Gachon University of Medicine and Science and Kyungwon University merged in 2012. Gachon University has three campuses for undergraduates, the Global Campus located in Seongnam, satellite campuses on Ganghwa Island and in Yeonsu-dong, and the School of Medicine in Guwol-dong, Namdong-gu, Incheon, South Korea. Gachon University signed a strategic partnership with Hawaii Pacific to allow students to study abroad. " Wikipedia.


Time filter

Source Type

A junctionless field-effect transistor is provided and has an ultra-thin low-crystalline silicon channel. A fabrication method thereof also is provided for enabling greatly improved economics by significantly reducing the process costs while having electrical characteristics similar to those of the one formed on an SOI substrate by source/channel/drain regions formed in a junctionless ultra-thin low-crystalline silicon layer that has lower crystallinity than that of single-crystal silicon and that has a thickness of 20 nm or less on a bulk silicon substrate instead of an expensive SOI substrate.


The present invention provides a transistor and a fabrication method thereof. By a silicon nanowire as a core region being serially wrapped by a germanium channel, a gate insulating film and a gate, the present invention enables to form a potential well for storing holes as a carrier of HHMT in the germanium channel by a valance band energy offset between the silicon core region and the germanium channel, to gain maximum gate controllability to the germanium channel, and to simplify a fabricating process by simultaneously forming the germanium channel and the gate insulating film in one process.


Patent
Gachon University and Gil Medical Center | Date: 2017-04-26

According to the present invention, accurate T2* and vascular images are concurrently acquired by acquiring a T2* image without a flow compensation and a T2* image with a flow compensation and subtracting the two images to reconstitute an image showing the flow phenomenon. Furthermore, an accurate T2* image can be acquired by using the readout gradient without the flow compensation and also the accurate T2* and vascular images can be concurrently acquired. The clinical judgment for blood flow rate of the blood vessel and the clinical judgment for acute stroke can be concurrently made, and so the present invention can be widely utilized in clinical practice.


Patent
Gachon University and Gil Medical Center | Date: 2017-04-26

Images where the vascular walls are automatically divided are obtained by obtaining two MRI images that reflect different properties of the blood vessel and obtaining the difference between the two images. This can image both the vascular inner and the outer walls, thereby obtaining the exact size of the blood vessel, and the thickness between the vascular inner and outer walls. Therefore, it is possible to stably perform the operation using a stent with an accurate size during the stent procedure.


Patent
Gil Medical Center and Gachon University | Date: 2014-09-30

Disclosed is a curved movable beam-stop array (BSA) which can be applied to accurately and efficiently improve the quality of images of a cone-beam CT (CBCT) system, and particularly, can be applied to not only a simulation CBCT system necessary for radiotherapy and a CBCT system mounted in a radiotherapy apparatus but also to a wide range of fields including plastic surgery, maxillofacial surgery, dental surgery, and the like. The BSA comprises a generator, a curved grid and a controller. The generator generates radiation beams while rotating to a gantry angle. The curved grid is positioned in the radiation direction of the radiation beams generated from the generator. The controller controls operations of the grid. In the BSA, the grid comprises a plurality of slits spaced apart from each other at a predetermined distance, the plurality of slits allowing at least a portion of the radiation beams generated from the generator to pass through. The controller moves the slit by a predetermined distance d when the generator moves by a predefined angle . Accordingly, it is possible to reduce the amount of radioactivity absorbed in an object to be examined and to decrease the time required to photograph through only a single scan. Further, it is possible to perform photographing in a wide area and simultaneously, to reduce the production of a penumbra. Further, it is possible to reduce errors in estimating a scattered degree of beams, thereby obtaining more precise and definite images. Further, the BSA is easily attached to a radiation planning CBCT system and a radiotherapy apparatus, to be used in identifying the position of a patient or tumor just before radiotherapy is performed.


Patent
Gachon University and Gil Medical Center | Date: 2015-03-26

Images where the vascular walls are automatically divided are obtained by obtaining two MRI images that reflect different properties of the blood vessel and obtaining the difference between the two images. This can image both the vascular inner and the outer walls, thereby obtaining the exact size of the blood vessel, and the thickness between the vascular inner and outer walls. Therefore, it is possible to stably perform the operation using a stent with an accurate size during the stent procedure.


Patent
Gachon University and Gil Medical Center | Date: 2015-03-26

According to the present invention, accurate T2* and vascular images are concurrently acquired by acquiring a T2* image without a flow compensation and a T2* image with a flow compensation and subtracting the two images to reconstitute an image showing the flow phenomenon. Furthermore, an accurate T2* image can be acquired by using the readout gradient without the flow compensation and also the accurate T2* and vascular images can be concurrently acquired. The clinical judgment for blood flow rate of the blood vessel and the clinical judgment for acute stroke can be concurrently made, and so the present invention can be widely utilized in clinical practice.


Patent
Gil Medical Center and Gachon University | Date: 2014-10-10

Disclosed is an artificial valved conduit that is a composite valved graft comprising double sewing cuffs, which can be easily used in aortic root replacement. The composite valved graft comprises a valve and a conduit part connected to the valve. The conduit part comprises a sewing cuff positioned on the outer circumference thereof. The sewing cuff comprises a first sewing cuff and a second sewing cuff positioned below the first sewing cuff. Accordingly, a double suture is easily performed, so that it is possible to prevent the loss of blood after a surgery and to reduce surgical time at the same time.


A method of manufacturing a thin film according to an exemplary embodiment of the present invention includes preparing an ink in which nickel oxide nanoparticles are uniformly dispersed, coating the ink on a base layer, and curing the ink to form a thin film including nickel oxide nanoparticles.


A resistive random access memory device is provided with a tunneling insulator layer between a resistance change layer and a bottom electrode. Thus, it is possible: to raise the selection (on/off) ratio by the current of a direct tunneling induced by low voltage in the unselected cell and the current of an F-N tunneling induced by high voltage in the selected cell, to efficiently suppress the leakage current in the read operation, to make a low current operation less A level by controlling the thickness of the tunneling insulator layer, and to be simultaneously fabricated together with circuit devices by forming the bottom electrodes (word lines) with a semiconductor material.

Loading Gachon University collaborators
Loading Gachon University collaborators