Korea Institute of Science and Technology

Snu Precision Co., Ltd.

Ji-Won Choi

Jin Sang Kim

Seong Keun Kim

Chong Yun Kang

Seung Hyub Baek

Seok-Jin Yoon

Chong-Yun Kang

Sang Tae Kim

Hyun-Cheol Song

Hyun-Jai Kim

Jin-Sang Kim

Seung-Hyub Baek

Hyun Seok Lee

Seong-Keun Kim

Jong-Yoon Ha

Beomjin Kwon

Yong-Won Song

Won Kook Choi

Seok Jin Yoon

Won-Kook Choi

Sangtae Kim

Hyunjung Yi

Doo Seok Jeong

Sung-Hun Sim

Soon-Man Hong

Heui-Jae Pahk

Kyung-Youl Baek

Seung-Sang Hwang

Chong-Min Koo

Young-Min Hwang

Woo-Jung Ahn

Young-Shin Lee

Dow-Bin Hyun

Woo-Suk Jung

Kwang-Chon Kim

Chang-Yeol Lee

Sang-Ho Cho

Won Jae Lee

Dong Wook Shin

Narendra Singh Parmar

Youn-hwan Shin

Im-Jun Roh

Jung Joon Pyeon

Cheol Jin Cho

Haena Yim

Proposed is a self-resonance tuning piezoelectric energy harvester with broadband frequency, including: a piezoelectric beam which is extended along a horizontal direction; a fixing member which fixes opposite ends of the piezoelectric beam; and a mobile mass which the piezoelectric beam passes through, and which is capable of self-movement along the piezoelectric beam through a through-hole which has a free space in addition to a space which the piezoelectric beam passes through, wherein as the mobile mass moves to a position of the piezoelectric beam, generated displacement of a piezoelectric beam is increased, and as the generated displacement becomes greater than the free space, the mobile mass is fixed to a position of a piezoelectric beam at which resonance will occur.

Self-resonance tuning piezoelectric energy with broadband frequency

Disclosed herein is a smart wearable lens mounted with an all-solid-state thin film secondary battery including a flexible substrate, a cathode current collector, a cathode, a solid electrolyte, an anode, and an anode current collector. The smart wearable lens mounted with the all-solid-state thin film secondary battery may be stably and continuously supplied with power and has a low self-discharge rate. In addition, the smart wearable lens may minimize aversion when humans are wearing the smart wearable lens and be suitably used for a curved lens, especially a micro-lens such as a contact lens.

Smart wearable lens mounted with all-solid-state thin film secondary battery and method for manufacturing the same

Disclosed is a transparent anode thin film comprising a transparent anode active material layer, wherein the transparent anode active material layer comprises a Si-based anode active material having a composition represented by the following [Chemical Formula 1]:SiN&#x2003;&#x2003;[Chemical Formula 1]

Transparent anode thin film comprising a transparent anode active material, lithium thin film secondary battery, and the method for manufacturing the same

A method of manufacturing an electrode layer and a method of manufacturing a capacitor using the same are provided. The method of manufacturing the electrode layer includes performing a first sub-cycle sequentially providing a tin precursor and an oxygen source on a substrate, performing a second sub-cycle sequentially providing a tin precursor, a tantalum precursor, and an oxygen source on the substrate on which the first sub-cycle is performed, and repeating a cycle including the first sub-cycle and the second sub-cycle to form a tantalum-doped tin oxide layer on the substrate. A tantalum concentration in the tantalum-doped tin oxide layer is determined by the tin precursor provided in the second sub-cycle.

Method of manufacturing electrode layer, method of manufacturing capacitor using the same, capacitor, and memory device including the same

Provided is a self-resonance tuning piezoelectric energy harvester. The self-resonance tuning piezoelectric energy harvester includes a piezoelectric beam which extends along a horizontal direction, a fixing element which fixes two ends of the piezoelectric beam, and a mass which is connected to the piezoelectric beam movably along the piezoelectric beam, wherein the mass includes a through-hole through which the piezoelectric beam passes, and makes the movement through the through-hole. According to the principle of continuous movement to the resonance position, the mass of the self-resonance tuning piezoelectric energy harvester induces the piezoelectric beam to generate displacement to the maximum and maximize the electricity production capacity of the piezoelectric energy harvester.

Self-resonance tuning piezoelectric energy harvester with broadband operation frequency

Disclosed is a thermoelectric composite material includes a thermoelectric material including crystal grains; and a MXene inserted at boundaries of the crystal grains consisting of the thermoelectric material. Accordingly, the thermoelectric composite material may have a reduced thermal conductivity and an increased electrical conductivity. Furthermore, mechanical properties of the thermoelectric composite material may be improved. Thus, the thermoelectric composite material may improve the thermoelectric ability of a thermoelectric module including the same. A method of manufacturing the thermoelectric composite material includes coating MXene on a surface of a thermoelectric material powder including crystal grains; and sintering the thermoelectric material powder coated with the MXene to form a sintered body including the MXene inserted at boundaries of the crystal grains consisting of the thermoelectric material.

Thermoelectric composite material comprising MXene and method for manufacturing the same

The present disclosure relates to a paste for ohmic contact to p-type semiconductor, including a metal oxide and a binder, wherein the metal oxide is a rhenium oxide or a molybdenum oxide.

Paste for ohmic contact to P-type semiconductor and method for forming ohmic contact to P-type semiconductor using the same

A method for manufacturing a thermoelectric material is provided. According to the method, a first shaped body is formed from a thermoelectric powder, of which a crystal has a layer structure. An extruded body is formed by extruding the first shaped body. A plurality of cut-off pieces are formed by cutting the extruded body along a cross-section perpendicular to an extrusion direction. A second shaped body is formed by stacking and pressing the cut-off pieces along a direction perpendicular to the extrusion direction. According to the above, a thermoelectric ability of a thermoelectric material and an efficiency for manufacturing a thermoelectric module may be improved.

Method for manufacturing thermoelectric material having high efficiency

Disclosed is a curved piezoelectric device maximizing an electrical potential of the piezoelectric material corresponding to an external mechanical stress. The curved piezoelectric device includes: a curved substrate; and a piezoelectric material provided on one surface or both surfaces of the curved substrate, wherein when a stress is applied, a neutral plane in which a compressive stress and a tensile stress are balanced is located in the curved substrate, wherein the location of the neutral plane is determined by yand yof Equation 1 or 2 below, and wherein the location of the neutral plane is controllable by adjusting a thickness (d), a sectional area (A) and a Young's modulus (E) of each of the curved substrate and the piezoelectric material: wherein 

Curved piezoelectric device

A capacitor for a semiconductor memory element includes a lower electrode, a dielectric layer disposed on the lower electrode and including titanium oxide, and an upper electrode disposed on the dielectric layer. The lower electrode includes a first metal and a second metal, the first metal including at least one selected from the group consisting of platinum (Pt), osmium (Os), rhodium (Rh) and palladium (Pd), the second metal including at least one selected from the group consisting of ruthenium (Ru) and iridium (Jr).

Capacitor for semiconductor memory element and method for manufacturing the same

Disclosed is a manganese tin oxide-based transparent conducting oxide (TCO) with an optimized composition, which has low surface roughness, low sheet resistance and high transmittance even when deposited at room temperature, a multilayer transparent conductive film using the same and a method for fabricating the same. The manganese tin oxide-based transparent conducting oxide has a composition of MnSnO (0&#x3c;x&#x2266;0.055), and the multilayer transparent conductive film includes: a manganese tin oxide-based transparent conducting oxide having a composition of MnSnO (0&#x3c;x&#x2266;0.055); a metal thin film deposited on the manganese tin oxide-based transparent conducting oxide; and a manganese tin oxide-based transparent conducting oxide having a composition of MnSnO (0&#x3c;x&#x2266;0.055) deposited on the metal thin film.

Manganese tin oxide based transparent conducting oxide and transparent conductive film and method for fabricating transparent conductive film using the same

A cathode thin film for a lithium secondary cell, which uses a cathode active material substituting Sn for Mn in lithium manganese oxide, has a high discharge capacity and an improved cycle property.

Lithium&#x2014;manganese&#x2014;tin oxide cathode active material and lithium secondary cell using the same

A thickness measurement apparatus includes a beam splitter for reflecting or transmitting a ray irradiated from an optical source or a ray reflected by a measurement object; a first lens part which condenses a ray to the measurement object and generates a reference ray; a second lens part for condensing a ray to the object to be measured; an interference light detector for detecting an interference signal generated by the reflected ray and reference ray; a spectroscopic detector corresponding to the second lens part to form a light path different from the path formed by the interference light detector and splits the ray reflected by the measurement object to detect an intensity and wavelength of each split ray; and a light path converter for selectively transmitting a ray to the interference light detector or spectroscopic detector, wherein position exchanging is performed between the first second lens parts.

Apparatus for measuring thickness

The present invention relates to a dielectric thin film composition showing linear dielectric properties, in which tin oxides (SnO) are introduced into a (Ba,Sr)TiO(BSTO) dielectric thin film in a continuous diffusion gradient manner in composition. Since the non-linear dielectric properties of BSTO are converted to linear dielectric properties by the addition of SnOaccording to the present invention, the dielectric thin film composition of the present invention is characterized in that: there is little change in the capacitance according to the applied electric field; it has a high dielectric constant capable of showing a desired capacitance even at a thickness suitable for preventing the occurrence of electron tunneling; and it exhibits paraelectric properties similar to the conventional dielectric substances such as SiOwhile having a very low dielectric loss.

Dielectric thin film composition showing linear dielectric properties

The invention relates to a low temperature co-firing ceramic (LTCC) composition for microwave frequency represented by the following formula 1:Ca[(LiNb)Ti]O+y(BO.ZnO.SiO.PbO)&#x2003;&#x2003;(1)

Low temperature co-firing ceramic (LTCC) composition for microwave frequency

Growing community of inventors

Seoul, South Korea

Ji-Won Choi