KR20150106541A - Appratus for detecting drug and detecting method of drug using the apparatus - Google Patents
Appratus for detecting drug and detecting method of drug using the apparatus Download PDFInfo
- Publication number
- KR20150106541A KR20150106541A KR1020140028730A KR20140028730A KR20150106541A KR 20150106541 A KR20150106541 A KR 20150106541A KR 1020140028730 A KR1020140028730 A KR 1020140028730A KR 20140028730 A KR20140028730 A KR 20140028730A KR 20150106541 A KR20150106541 A KR 20150106541A
- Authority
- KR
- South Korea
- Prior art keywords
- drug
- white light
- sensing chip
- tio
- storage space
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
Abstract
A focusing lens for focusing the white light emitted from the white light source and collecting reflected light emitted from the sensor unit; and a light source for measuring a spectrum wavelength of the reflected light transmitted from the focusing lens, And a sensor unit provided below the focusing lens to emit the focused white light emitted from the focusing lens and emit the reflected light to the white light, wherein the sensor unit comprises a titanium substrate, A porous sensing chip provided on a part of the substrate and facing the storage space and having TiO 2 nanotubes formed thereon; a sidewall for forming a storage space for temporarily storing the liquid mixed with the drug, And a sensing chip And a discharge pipe for discharging the drug mixture liquid contained in the storage space. The drug detection device according to claim 1, And a drug detection method using the same. According to the present invention, the drug can be detected by an in-vitro experiment through optical interference biosensing.
Description
The present invention relates to a drug detection apparatus and a drug detection method, and more particularly, to a drug detection apparatus capable of detecting a drug through an in-vitro experiment through optical interference biosensing and a drug detection method using the same will be.
Traditional drug delivery has been through oral or intravenous injections and has repeated the toxic level or less than the lowest effective dose because the drug concentration has risen beyond necessity. Repeated administration of these drugs presents the risk of causing adverse effects due to the toxicity of the drug to the patient.
The drug delivery system that incorporates nanotechnology is a method in which the drug attached to the surface of the nanoparticles reaches the target site in the form of nanoparticles and the drug is delivered to the target site. Thus, the drug positioned on the surface of the nanoparticles may be temporarily overdosed have. In addition, there is a problem in that a technique for controlling the amount of elution in nanoparticles is not secured, and a long-term stable drug administration can not be achieved.
Therefore, in consideration of the case of being injected into the body of an animal or human body through the drug delivery system, a drug detection apparatus and a drug detection apparatus capable of detecting the amount of drug elution in the body of an animal or human body as an in- A method is required.
The present invention provides a drug detection apparatus and a drug detection method capable of detecting a drug through in-vitro experiments through optical interference biosensing.
A focusing lens for focusing the white light emitted from the white light source and collecting reflected light emitted from the sensor unit; and a light source for measuring a spectrum wavelength of the reflected light transmitted from the focusing lens, And a sensor unit provided below the focusing lens to emit the focused white light emitted from the focusing lens and emit the reflected light to the white light, wherein the sensor unit comprises a titanium substrate, A porous sensing chip provided on a part of the substrate and facing the storage space and having TiO 2 nanotubes formed thereon; a sidewall for forming a storage space for temporarily storing the liquid mixed with the drug, And a sensing chip And a discharge pipe for discharging the drug mixture liquid contained in the storage space. The drug detection device according to claim 1, wherein the drug detection device further comprises: to provide.
The drug may be selected from the group consisting of contrast agents including fluorescent particles or magnetic particles, chlorhexidine, tetracycline, minocycline (minocycline), doxorubicin, paclitaxel, camptothecin, cholorimus, rapamycin, thioctic acid, Lt; / RTI >
The light-transmitting substrate may be a glass or acrylic transparent substrate, and the spectrometer may be a CCD (charged coupled device) spectrometer.
The TiO 2 nanotubes may have a length in a direction parallel to the direction in which the focused white light is incident on the sensing chip, and the inner diameter of the TiO 2 nanotubes may have a size of 1 to 300 nm.
According to another aspect of the present invention, there is provided an optical pickup device comprising: a white light source for emitting white light; a focusing lens for focusing white light emitted from the white light source and collecting reflected light emitted from the sensor; A porous sensing chip provided on a part of the titanium substrate and facing the storage space, the porous sensing chip having TiO 2 nanotubes formed thereon; A light-transmitting substrate which is spaced apart from the sensing chip and which is provided in close contact with the upper portion of the side wall, and a liquid- An inlet pipe, and a discharge port for discharging the drug mixture liquid contained in the storage space The method comprising the steps of: preparing a sensor section including a discharge tube; introducing a drug-mixed liquid into the storage space through the inlet tube; emitting white light from the white light source; Focusing on the sensing chip through the focusing lens; collecting the reflected light, which is interfered after the white light is incident, by using the spectrometer; and fast Fourier transforming the collected reflected light, And detecting the drug by measuring the optical thickness exhibited by the drug.
The drug may be selected from the group consisting of contrast agents including fluorescent particles or magnetic particles, chlorhexidine, tetracycline, minocycline (minocycline), doxorubicin, paclitaxel, camptothecin, cholorimus, rapamycin, thioctic acid, Lt; / RTI >
The light-transmitting substrate may be a glass or acrylic transparent substrate, and the spectrometer may be a CCD (charged coupled device) spectrometer.
The TiO 2 nanotubes may have a length in a direction parallel to the direction in which the focused white light is incident on the sensing chip, and the inner diameter of the TiO 2 nanotubes may have a size of 1 to 300 nm.
According to the drug detection apparatus and the drug detection method of the present invention, the drug can be detected as an in-vitro experiment through optical interference biosensing.
1 is a schematic view of a drug detection device according to a preferred embodiment of the present invention.
FIGS. 2 and 3 are diagrams for explaining a method of forming a sensing chip on a titanium substrate.
4 is a schematic configuration diagram of an apparatus for performing an anodic oxidation method.
5 is a view showing a state in which deionized water (DI Water) is flowed into the
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it should be understood that the following embodiments are provided so that those skilled in the art will be able to fully understand the present invention, and that various modifications may be made without departing from the scope of the present invention. It is not. Wherein like reference numerals refer to like elements throughout.
A drug detection apparatus according to a preferred embodiment of the present invention includes: a white light source for emitting white light; a focusing lens for focusing white light emitted from the white light source and collecting reflected light emitted from the sensor unit; And a sensor unit provided below the focusing lens and adapted to emit the focused white light emitted from the focusing lens and emit the reflected light to the white light, wherein the spectral sensor measures the intensity of the reflected light, The sensor unit includes a titanium substrate, a porous sensing chip provided in a partial region of the titanium substrate and facing the storage space, the TiO 2 nanotube being formed on the titanium substrate, A side wall for forming a storage space And a discharge tube for discharging the drug mixture liquid contained in the storage space, the discharge tube for discharging the drug mixture liquid contained in the storage space, the discharge tube for discharging the drug mixture liquid contained in the storage space, .
The drug may be selected from the group consisting of contrast agents including fluorescent particles or magnetic particles, chlorhexidine, tetracycline, minocycline (minocycline), doxorubicin, paclitaxel, camptothecin, cholorimus, rapamycin, thioctic acid, Lt; / RTI >
The light-transmitting substrate may be a glass or acrylic transparent substrate, and the spectrometer may be a CCD (charged coupled device) spectrometer.
The TiO 2 nanotubes may have a length in a direction parallel to the direction in which the focused white light is incident on the sensing chip, and the inner diameter of the TiO 2 nanotubes may have a size of 1 to 300 nm.
A drug detection method according to a preferred embodiment of the present invention includes: a white light source for emitting white light; a focusing lens for focusing white light emitted from the white light source and collecting reflected light emitted from the sensor unit; Preparing a spectrometer for measuring a change in intensity of a transmitted spectrum of the reflected light by measuring a spectral wavelength of the transmitted light, a porous sensing chip provided in a partial region of the titanium substrate and facing the storage space and formed of TiO 2 nanotubes, A sidewall for forming a storage space for temporarily storing the liquid mixed with the drug, provided on the titanium substrate, a transparent substrate spaced apart from the sensing chip and closely contacting the upper surface of the sidewall, An inlet pipe for introducing the drug-mixing liquid, The method comprising the steps of: preparing a sensor portion including a discharge tube for discharging a drug-mixing liquid contained in the drug solution; introducing a drug-mixed liquid into the storage space through the inlet tube; emitting white light from the white light source; Focusing the white light emitted from the white light source on the sensing chip through the focusing lens; collecting the reflected light interfered with after the white light is incident using the spectrometer; And detecting the drug by measuring the optical thickness represented by the drug in the sensing chip.
The drug may be selected from the group consisting of contrast agents including fluorescent particles or magnetic particles, chlorhexidine, tetracycline, minocycline (minocycline), doxorubicin, paclitaxel, camptothecin, cholorimus, rapamycin, thioctic acid, Lt; / RTI >
The light-transmitting substrate may be a glass or acrylic transparent substrate, and the spectrometer may be a CCD (charged coupled device) spectrometer.
The TiO 2 nanotubes may have a length in a direction parallel to the direction in which the focused white light is incident on the sensing chip, and the inner diameter of the TiO 2 nanotubes may have a size of 1 to 300 nm.
Hereinafter, a drug detection apparatus and a drug detection method using the same according to a preferred embodiment of the present invention will be described.
First, the drug detection device will be described in more detail. 1 is a schematic view of a drug detection device according to a preferred embodiment of the present invention.
Referring to FIG. 1, a drug detection apparatus according to a preferred embodiment of the present invention includes a
The
The
The focusing
The
The
The
The light-transmitting
The liquid may be a liquid containing a drug to be detected, for example, a drug may be mixed with deionized water, or a drug may be mixed with blood. Drug means a contrast agent including fluorescent particles or magnetic particles, chlorhexidine, tetracycline, minocycline (minocycline), doxorubicin, paclitaxel, camptothecin, sirolimus, rapamycin, thioctic acid, Forming agents, functional agents, functional ingredients, and the like. Examples of the bone growth factor include bone morphogenetic protein-2 (BMP-2). Examples of the functional ingredient include components constituting the body of a human or animal such as calcium (Ca), phosphorus (P), and magnesium (Mg). The detection device according to the preferred embodiment of the present invention may detect biomaterials such as bacteria and specific proteins in addition to the above-mentioned drugs. Examples of such biomaterials include E. coli, food poisoning bacteria such as O157: H7, and the like.
The
The
Hereinafter, the drug detection method will be described in more detail.
A flow cell method is used to send the drug to the
When the drug mixture liquid is contained in the storage space, the
The reflected light coming out from the interference is collected using the
And collects reflected light coming from the
The change in refractive index caused by the drug present in the
It is preferable to focus the surface of the
Hereinafter, a method of measuring interference reflected light on the
First, the interference phenomenon with the Fabry-Perot will be explained. When a mirror with a high reflectance is placed parallel to each other and light is incident on the mirror, the light transmitted through the mirror transmits some light on the surface of the parallel mirror, but most of the light repeats transmission and reflection. On the opposite side of the incidence direction, the number of reflections between the two mirrors is transmitted through the lower mirror, where each light exhibits interference as much as the path difference.
When the focused white light is incident on the
The optical thickness refers to the distance between the upper end portion and the opposite lower end portion, that is, the length of the space in which the drug-mixing liquid is loaded in the
Equation (1) shows the relationship between the refractive index (n) and the optical thickness (L).
[Equation 1]
m? = 2nL
Where m is the interference order,? Is the maximum interference wavelength obtained in the m-order, n is the index of refraction according to the
The optical thickness L can be changed. The longer the optical thickness, the greater the number of fringes and changes the characteristics of the interference wavelength.
When the white light is irradiated onto the
As the drug mixture liquid is administered, the reflected waveform of the Fabry-Perof fringe shape can confirm the intensity change of the white light and the shift of the reflection wavelength.
We attempt fast Fourier transformation (FFT) on the spectrum for the reflected wavelength in the form of a Fabry-Perof fringe for white light. Fast Fourier transform is an algorithm designed to reduce the number of operations when computing a discrete fourier transform based on Fourier transform. Fast Fourier transform is a function calculation method that converts the temporal flow sound information into frequency flow.
When a reflected light spectrum is subjected to a fast Fourier transform (FFT), a peak having a specific optical thickness can be obtained, and this optical thickness is referred to as an effective optical thickness. This effective optical thickness is shifted according to the change of the spectrum depending on the size and the refractive index of the drug contained in the
Hereinafter, a method of forming the
2 and 3, a
A plurality of TiO 2 nanotubes longitudinally extending inward from the
Hereinafter, a method of forming TiO 2 nanotubes by anodic oxidation will be described in more detail.
The
TiO 2 having a nanotube structure is formed on the cleaned
4 is a schematic configuration diagram of an apparatus for performing an anodic oxidation method.
Referring to FIG. 4, electrolyte, applied voltage, anodic oxidation time, temperature, and the like are important factors for anodization. The anodizing apparatus includes an
TiO 2 has an energy gap of 3.2 eV, is chemically and biologically stable and does not corrode well. TiO 2 exists in three forms: anatase phase, rutile phase and brookite phase, and TiO 2 on anatase phase is converted to rutile phase when treated at a high temperature of 1100 ° C. or higher. TiO 2 may be prepared to have an anatase phase in nanotube form using anodization according to a preferred embodiment of the present invention.
The anodic oxidation equipment includes an
A
The
In the anodic oxidation process, water molecules (H 2 O) in the electrolyte (220) are electrolytically decomposed into hydrogen ions (H + ) and hydroxyl group ions (OH - ) as shown in the following reaction formula (1).
[Reaction Scheme 1]
H 2 O → H + + OH -
The hydrogen ion H + moves toward the
The hydroxyl group ion (OH - ) migrates toward the
[Reaction Scheme 2]
Ti 4 + + 2O 2 - > TiO 2
Also, the hydrogen ion (H + ) reacts with TiO 2 to partially break the bond between titanium (Ti) and oxygen to form a hydroxide, which is dissolved in the
If this is expressed as a reaction formula, the following reaction formula 3 is obtained.
[Reaction Scheme 3]
Ti + 2H 2 O → TiO 2 + 4H + + 4e -
The water molecules in the electrolyte solution meet with the Ti metal at the anode and TiO 2 is formed as shown in Equation 3.
The TiO 2 thus formed is dissociated as shown in Scheme 4 by a small amount of fluorine ion (F - ) contained in the electrolyte solution.
[Reaction Scheme 4]
TiO 2 + 6F - + 4H + - [TiF 6 ] 2 - + 2H 2 O
This dissociation occurs across the entire TiO 2 and forms nano-sized nanotubes. Also, as the anodic oxidation time is increased, the oxidation reaction of Reaction Formula 3 and the dissociation reaction of Reaction Formula 4 occur at the same time, from which TiO 2 having nanotubes can be obtained. The inside diameter of the nanotube is 1 to 300 nm in diameter.
The thickness of the TiO 2 (corresponding to the length of the nanotube) is determined according to the following equation (1) by the voltage U a supplied from the
[Equation 1]
d ox = U a / E a = K a · U a
Here, K a is an anodic oxidation constant.
In the case of forming the nanotube structure of TiO 2 , the diameter of the nanotube, the length of the nanotube can be controlled by suitably controlling the concentration of the electrolyte, the intensity of the applied voltage, the processing time, and the temperature of the electrolytic bath.
When using an anode oxidation to form a TiO 2 nano-tube structure, it is possible to heat treatment in order to crystallize the TiO 2 of the nanotube structure. Specifically, the nanotube-structured TiO 2 is heated at a rate of 2 to 5 ° C per minute in an air atmosphere, heat-treated at 350 to 550 ° C for 10 minutes to 6 hours, and then naturally cooled.
As described above, there is an advantage that the specific surface area of the
5 is a view showing a state in which deionized water (DI Water) is flowed into the
5, white light is emitted from a
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, This is possible.
10: source of white light 20: focusing lens
30: Spectrometer 40: First cable
50: second cable 60: focused white light
70: reflected light 100: sensor part
110: titanium (Ti) substrate 120: sensing chip
130: storage space 140: side wall
150: light-transmitting substrate 160: inlet pipe
170: discharge pipe 180: pedestal
210: electrolytic cell 220: electrolytic solution
230: anode 240: cathode
250: power supply means 280: magnetic stirrer
285: Cooling unit 290: Magnet bar for stirring
295: Thermometer
Claims (8)
A focusing lens for focusing the white light emitted from the white light source and collecting reflected light emitted from the sensor part;
A spectrometer for measuring a spectral wavelength of the reflected light transmitted from the focusing lens to measure a change in intensity; And
And a sensor unit provided below the focusing lens to emit the focused white light emitted from the focusing lens and emit the reflected light to the white light,
The sensor unit includes a titanium substrate;
A porous sensing chip provided in a part of the titanium substrate and facing the storage space and formed of TiO 2 nanotubes;
A side wall provided on the titanium substrate to form a storage space for temporarily storing liquid mixed with the drug;
A light-transmitting substrate spaced apart from the sensing chip and closely contacting the upper surface of the sidewall;
An inlet pipe for introducing the drug-mixing liquid into the storage space; And
And a discharge pipe for discharging the drug-mixing liquid contained in the storage space.
Wherein the spectrometer comprises a charged coupled device (CCD) spectrometer.
Wherein the inner diameters of the TiO 2 nanotubes have a size of 1 to 300 nm.
A porous sensing chip provided in a partial region of the titanium substrate and facing the storage space and having TiO 2 nanotubes formed thereon; and a liquid reservoir provided on the titanium substrate for forming a storage space for temporarily storing the liquid mixed with the drug A light-transmitting substrate spaced apart from the sensing chip and closely contacted with the upper portion of the side wall, an inlet pipe for introducing the drug-mixing liquid into the storage space, an outlet pipe for discharging the drug- Preparing a sensor unit including the sensor unit;
Introducing a drug-mixed liquid into the storage space through the inlet tube;
Emitting white light from the white light source and focusing the white light emitted from the white light source onto the sensing chip through the focusing lens;
Collecting reflected light that is interfered with after the white light is incident using the spectrometer; And
And detecting the drug by measuring the thickness of the optical light reflected by the drug in the sensing chip by performing a fast Fourier transform on the collected reflected light.
Wherein the spectrometer uses a charged coupled device (CCD) spectrometer.
Wherein the inner diameter of the TiO 2 nanotube has a size of 1 to 300 nm.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140028730A KR20150106541A (en) | 2014-03-12 | 2014-03-12 | Appratus for detecting drug and detecting method of drug using the apparatus |
PCT/KR2014/003186 WO2015137555A1 (en) | 2014-03-12 | 2014-04-14 | Drug detection device and drug detection method using same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140028730A KR20150106541A (en) | 2014-03-12 | 2014-03-12 | Appratus for detecting drug and detecting method of drug using the apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20150106541A true KR20150106541A (en) | 2015-09-22 |
Family
ID=54071980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020140028730A KR20150106541A (en) | 2014-03-12 | 2014-03-12 | Appratus for detecting drug and detecting method of drug using the apparatus |
Country Status (2)
Country | Link |
---|---|
KR (1) | KR20150106541A (en) |
WO (1) | WO2015137555A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019198859A1 (en) * | 2018-04-10 | 2019-10-17 | 강릉원주대학교산학협력단 | Optical sensor enabling real-time analysis of organic solvent and method for analyzing organic solvent in real time |
KR102298649B1 (en) | 2020-09-07 | 2021-09-03 | 임태호 | Device for Detecting Leak of Drug and Driving Method Thereof |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2604344A3 (en) * | 2007-03-28 | 2014-07-16 | BioNano Genomics, Inc. | Methods of macromolecular analysis using nanochannel arrays |
KR101093203B1 (en) * | 2009-10-20 | 2011-12-12 | 한국과학기술원 | Copper-Capped Nanoparticle Array Biochip Based on LSPR Optical Properties and Use Thereof |
KR101105328B1 (en) * | 2009-11-23 | 2012-01-16 | 한국표준과학연구원 | Apparatus and method for quantifying the binding and dissociation kinetics of molecular interactions |
-
2014
- 2014-03-12 KR KR1020140028730A patent/KR20150106541A/en not_active Application Discontinuation
- 2014-04-14 WO PCT/KR2014/003186 patent/WO2015137555A1/en active Application Filing
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019198859A1 (en) * | 2018-04-10 | 2019-10-17 | 강릉원주대학교산학협력단 | Optical sensor enabling real-time analysis of organic solvent and method for analyzing organic solvent in real time |
KR20190118248A (en) * | 2018-04-10 | 2019-10-18 | 강릉원주대학교산학협력단 | Optical sensor for real time sensing of organic solvent and method for real time sensing of organic solvent |
KR102298649B1 (en) | 2020-09-07 | 2021-09-03 | 임태호 | Device for Detecting Leak of Drug and Driving Method Thereof |
Also Published As
Publication number | Publication date |
---|---|
WO2015137555A1 (en) | 2015-09-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Venkateswarlu et al. | Role of electrolyte chemistry on electronic and in vitro electrochemical properties of micro-arc oxidized titania films on Cp Ti | |
Prakasam et al. | A new benchmark for TiO2 nanotube array growth by anodization | |
So et al. | Ultrafast growth of highly ordered anodic TiO2 nanotubes in lactic acid electrolytes | |
US6773429B2 (en) | Microchip reservoir devices and facilitated corrosion of electrodes | |
Acciari et al. | Surface modifications by both anodic oxidation and ion beam implantation on electropolished titanium substrates | |
JP2021008472A (en) | Process for making gel composition | |
Indira et al. | In vitro bioactivity and corrosion resistance of Zr incorporated TiO2 nanotube arrays for orthopaedic applications | |
KR20110126664A (en) | Surface treatment process for implantable decidal device | |
JP2012098114A (en) | Apparatus and method for measuring hydroxyl radical | |
KR20150106541A (en) | Appratus for detecting drug and detecting method of drug using the apparatus | |
JP6904530B2 (en) | Compositions and devices for detecting hydroxyl radicals, and methods for detecting hydroxyl radicals using them. | |
Bera et al. | Porous silicon and its nanoparticle as biomaterial: A review | |
JP2011111660A (en) | Titania nanotube array and method for producing the same | |
Nalbantgil et al. | Evaluation of corrosion resistance and surface characteristics of orthodontic wires immersed in different mouthwashes | |
Guo et al. | Optimizing titanium implant nano-engineering via anodization | |
JP5083825B2 (en) | Plasma discharge device in liquid | |
JP5770491B2 (en) | Method for measuring total concentration of oxidizing substance, concentration meter for measuring total concentration of oxidizing substance, and sulfuric acid electrolysis apparatus using the same | |
JP2010221072A (en) | Ultraviolet irradiation device | |
JP2017001021A (en) | Liquid treatment method, object treatment method, liquid treatment device and plasma treatment liquid | |
KR20200028611A (en) | Ultra Violet Sterilizing Apparatus using Lens Array | |
JP5863301B2 (en) | Management method of electrolyte for anodizing | |
WO2018015570A1 (en) | Administration of oral care antimicrobials | |
CN107921174A (en) | Metal object and production method with roughened surface | |
KR20120120784A (en) | Inserts for body using titanium oxide nanotube | |
JP2008010407A (en) | Manufacturing method and device of conductive polymer membrane |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E601 | Decision to refuse application |