WO2009075481A2 - A method for adsorption using solid thin film mask of nano-particle and adsorption matter - Google Patents
A method for adsorption using solid thin film mask of nano-particle and adsorption matter Download PDFInfo
- Publication number
- WO2009075481A2 WO2009075481A2 PCT/KR2008/006787 KR2008006787W WO2009075481A2 WO 2009075481 A2 WO2009075481 A2 WO 2009075481A2 KR 2008006787 W KR2008006787 W KR 2008006787W WO 2009075481 A2 WO2009075481 A2 WO 2009075481A2
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- WO
- WIPO (PCT)
- Prior art keywords
- tip
- thin film
- solid thin
- film mask
- nano
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81C—PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
- B81C1/00—Manufacture or treatment of devices or systems in or on a substrate
- B81C1/00015—Manufacture or treatment of devices or systems in or on a substrate for manufacturing microsystems
- B81C1/00206—Processes for functionalising a surface, e.g. provide the surface with specific mechanical, chemical or biological properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81C—PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
- B81C1/00—Manufacture or treatment of devices or systems in or on a substrate
- B81C1/00349—Creating layers of material on a substrate
- B81C1/0038—Processes for creating layers of materials not provided for in groups B81C1/00357 - B81C1/00373
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01Q—SCANNING-PROBE TECHNIQUES OR APPARATUS; APPLICATIONS OF SCANNING-PROBE TECHNIQUES, e.g. SCANNING PROBE MICROSCOPY [SPM]
- G01Q70/00—General aspects of SPM probes, their manufacture or their related instrumentation, insofar as they are not specially adapted to a single SPM technique covered by group G01Q60/00
- G01Q70/16—Probe manufacture
- G01Q70/18—Functionalisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81B—MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES
- B81B2201/00—Specific applications of microelectromechanical systems
- B81B2201/12—STM or AFM microtips
Definitions
- the present invention relates to techniques for adsorbing a nano-structure and an adsorption material on a tip of a scanning probe microscope, and more particularly , to a method of adsorbing a nano-structure and an adsorption material using a solid thin film mask, in which the solid thin film mask is used to prevent the deformation of the tip of the scanning probe microscope, and the nano-structure and the adsorption material can be deposited only on the tip of the scanning probe microscope, regardless of the properties of the nano-structure and the adsorption material which are adsorbed and also regardless of the surface material of the tip of the probe microscope and the properties thereof.
- nano-particles or various nano-wires made of Au, Ag, CdSe or the like and optical properties, electrical properties, shapes, sizes thereof can be very exactly controlled.
- development of nano-technology allows further precise scanning probe microscope to be developed. If various nano-structures or adsorption materials the shapes or sizes of which have been precisely controlled are able to be adsorbed only on the end portion of the probe microscope, the properties of conventional probe microscopes may be drastically improved.
- nano-optical measurement types such as nano-FRET (nano-Fluorescent Resonance Energy Transfer), nano-SERS ( nano-Surface-Enhanced Raman Scattering) or the like.
- nano-FRET nano-Fluorescent Resonance Energy Transfer
- nano-SERS nano-Surface-Enhanced Raman Scattering
- the tip on which the nano-structure having a uniform shape is adsorbed enables the nano-scale force to be more reliably measured, compared to conventional measurements.
- the method of coating the entire surface of tip of the probe microscope with the nano-structure includes, as shown in FIG. 1, coating the entire surface of the tip T of the probe microscope with a CdSe fluorescent nano-structure N.
- a CdSe fluorescent nano-structure N When using the tip thus obtained, nano-FRET imaging can be realized.
- this method is problematic because the nano-structure N is attached to the entire surface of the tip T, drastically lowering the resolution.
- the typical process thereof includes sequentially depositing an Au film 10 andan adsorption prevention molecular film 20 having a very low ability to adsorb a nano-structure N on the surface of a tip T of a probe microscope, removing the Au film 10 and the adsorption prevention molecular film 20 which are deposited on the end of the tip T, and depositing a linker molecule layer 30 having a high ability to adsorb the nano-structure N on the end of the tip T having neither Au film nor adsorption prevention molecular film. Then, the nano-structure N is adsorbed, so that the nano-structure N is selectively adsorbed on the linker molecule layer 30 of the end of the tip T.
- the adsorption prevention molecular film According to the method using the adsorption prevention molecular film, however , many organics including an adsorption prevention thin film used for preventing the adsorption of the nano-structure are permanently present on the probe of the probe microscope, and thus the properties of the probe itself may change. Also, the above method is unable to adsorb materials which are adsorbable through sputtering or evaporation, and thus, many limitations are imposed on the usable types of nano-structure or adsorption material. As well, depending on the surface material of the tip and the properties thereof, problems are caused by the necessary use of the adsorption prevention molecular film and the restrictions its use imposes.
- the present invention is intended to adsorb a nano-structure or an adsorption material only on the end of a tip of a probe microscope.
- a solid thin film mask is deposited over the entire surface of the tip of the probe microscope, and the end of tip having the solid thin film mask deposited over the entire surface thereof grinds against the surface of a solid, thus removing only the end portion of the solid thin film mask which was deposited over the entire surface of the tip.
- the nano-structure or the adsorption material ( in the case of the nano-structure , a linker molecule layer is adsorbed and then the nano-structure is adsorbed) is adsorbed on the entire surface of the tip, so that the nano-structure or the adsorption material can be adsorbed both on the surface of the solid thin film mask and on the surface having no solid thin filmmask.
- the solid thin film mask is removed from the surface of the tip, so that the nano-structure or the adsorption material adsorbed on the surface of the solid thin film mask can be removed together. Thereby, only the nano-structure or the adsorption material which is adsorbed on the surface having no solid thin film mask remains.
- An aspect of the present invention provides a method of adsorbing a nano-structure and an adsorption material using a solid thin film mask, including a) depositing a solid thin film mask on a tip of a probe microscope; b) grinding the end of the tip having the solid thin film mask deposited thereon against the surface of a solid, thus removing only the solid thin film mask which was deposited on the end of the tip from the entire deposited solid thin film mask; c) depositing a linker molecule layer on the tip only the end of which has no solid thin filmmask; d) immersing the tip having the linker molecule layer deposited thereon in a nano-structure solution thus adsorbing the nano-structure on the linker molecule layer ; and e) removing the solid thin filmmask deposited on the tip.
- another aspect of the present invention provides a method of adsorbing a nano-structure and an adsorption material using a solid thin film mask, including a) depositing a solid thin film mask on a tip of a probe microscope; b) grinding the end of the tip having the solid thin filmmask deposited thereon against the surface of a solid, thus removing only the solid thin film mask deposited on the end of the tip from the entire deposited solid thin film mask; c 1 ) depositing an adsorption material on the tip only the end of which has no solid thin film mask; and d' ) removing the solid thin film mask deposited on the tip.
- b) removing only the solid thin film mask deposited on the end of the tip may be performed by bringing the end of the tip into contact with the surface of the solid and then scanning an end region of the tip having a size of 10 ⁇ m 10 ⁇ m for a period of time ranging from 1 sec to 1 day using a force of 10-500 nN.
- b) removing only the solid thin film mask deposited on the end of the tip may be performed through CMP (Chemical Mechanical Polishing).
- c) depositing the linker molecule layer on the tip having no solid thin film mask may be performed by immersing the tip in a linker molecule solution for a period of time ranging from 1 sec to 10 days and then washing off the tip with anhydrous hexane .
- c) depositing the linker molecule layer on the tip having no solid thin film mask may be performed by heating the linker molecule solution in a closed container thus generating steam, which is then brought into contact with the tip for a period of time ranging from 1 sec to 10 days.
- d) immersing the tip having the linker molecule layer deposited thereon in the nano-structure solution thus adsorbing the nano-structure on the linker molecule layer may be performed by immersing the tip in the nano-structure solution for 1 hour or longer.
- c' depositing an adsorption material over the entire surface of tip only the end of which has no solid thin film mask may be performed by depositing the nano-structure through sputtering or evaporation.
- the solid thin film mask may include aluminum (Al).
- the linker molecule solution may be an aminopropyltriethoxysilane solution .
- FIG. 1 is of a schematic view and a SEM (Scanning Electron Microscope) image showing a state where a nano-structure is adsorbed on the entire surface of a tip of a probe microscope according to a conventional technique;
- SEM Sccanning Electron Microscope
- FIG. 2 is a schematic view showing a process of adsorbing a nano-structure using an adsorption prevention molecular film according to another conventional technique
- FIG. 3 is a schematic view showing a process of adsorbing a nano-structure using a solid thin film mask according to a first embodiment of the present invention
- FIG. 4 is of SEM images showing the state of the nano-structure adsorbed on the end of the tip before and after removal of the solid thin film mask according to the process of FIG. 3;
- FIG. 5 is a schematic view showing a process of adsorbing an adsorption material using a solid thin film mask according to a second embodiment of the present invention
- FIG. 6 is an SEM image showing the state of the adsorption material adsorbed on the end of the tip after removal of the solid thin film mask according to the process of FIG. 5;
- FIG. 7 is a schematic view showing a process of adsorbing an adsorption material using a solid thin film mask according to a third embodiment of the present invention
- FIG. 8 is an SEM image showing the state of the adsorption material adsorbed on the end of the tip after removal of the solid thin film mask according to the process of FIG. 7.
- FIG. 3 is a schematic view showing a process of adsorbing a nano-structure using a solid thin film mask according to a first embodiment of the present invention
- FIG. 4 is of SEM images showing the state of the nano-structure adsorbed on the end of the tip before and after removal of the solid thin film mask according to the process of FIG. 3.
- the method of adsorbing a nano-structure N on the end of a tip T includes a) depositing a solid thin film mask 100 over the entire surface of the tip T, b) grinding the end of the tip T having the solid thin film mask 100 deposited thereon against the surface of a solid thus removing only the solid thin filmmask 100 deposited on the end of the tip T from the entire deposited solid thin film mask 100, c) depositing a linker molecule layer 30 over the entire surface of the tip T only the end of which has no solid thin film mask 100, d) immersing the tip T having the linker molecule layer 30 deposited thereon in a nano-structure solution thus adsorbing the nano-structure N on the linker molecule layer 30 ((a) of FIG.
- FIG. 5 is a schematic view showing a process of adsorbing an adsorption material using a solid thin film mask according to a second embodiment of the present invention
- FIG. 6 is an SEM image showing the state of the adsorption material adsorbed on the end of the tip after removal of the solid thin film mask according to the process of FIG. 5.
- the method of adsorbing an adsorption material M on the end of a tip of a probe microscope includes a) depositing a solid thin film mask 100 over the entire surface of a tip T of a probe microscope, b) grinding the end of the tip T having the solid thin filmmask 100 deposited thereon against the surface of a solid thus removing only the solid thin film mask 100 deposited on the end of the tip T from the entire deposited solid thin film mask 100, c ' ) depositing an adsorption material M over the entire surface of the tip T only the end of which has no solid thin film mask 100, and d' ) removing the solid thin film mask 100 deposited on the tip T.
- the adsorption material N is adsorbed only on the end of the tip T.
- FIGS. 7 and 8 In the method of adsorbing the nano-structure and the adsorption material using the solid thin film mask according to the first and second embodiments of the present invention (FIGS. 3 to 6), an alternative to the removal of the solid thin film mask is described below. As shown in FIGS. 7 and 8, a basic solution may be used to remove the solid thin film mask. In the case where the basic solution is used, the solid thin film mask can be completely removed, thus maintaining the surface properties of the probe microscope .
- a gold (Au) nano-structure is used as the nano-structure and aluminum (Al ) is used as the solid thin film mask.
- An aminopropyltriethoxysilane solution is used as a linker molecule solution.
- an aluminum solid thin film mask 10-100 nm thick is deposited, and the tip is mounted in a probe microscope . Then , the tip is brought into contact with the surface of silicon dioxide (SiO 2 ), and a predetermined end region thereof having a size of 10 ⁇ m x 10 ⁇ m is scanned for a predetermined period of time using a force of about 10-500 nN, thus removing the solid thin film mask from the end of the tip.
- the section of the end of the tip having no mask has an average diameter ranging from 30 nm to 1000 nm, and the conditions for polishing or CMP may be controlled in order to achieve the above diameter.
- Al As the solid thin film mask, Al, Ti, SiCb, tin oxide, Co, Pd, Ag, Cr, Pb or the like may be used, in addition to Al.
- CMP for flattening a semiconductor wafer may be used, or scanning wafer-scale tips in contact with the surface of silicon dioxide (SiO 2 ) may be employed.
- the tip the end of which has no solid thin film mask is immersed in a solution of aminopropyltriethoxysilane in anhydrous hexane for about 30 min.
- aminopropyltriethoxysilane is deposited on the end of the tip and is also slightly deposited on the surface of the aluminum (Al) solid thin film mask.
- the aminopropyltriethoxysilane solution may be heated in a closed container, thus generating steam, which is then brought into contact with the tip for a predetermined period of time, thus depositing aminopropyltriethoxysilane on the surface of the Al solid thin film mask.
- the aluminum etchant used for removing the solid thin film mask is exemplary, and, depending on the type of solid thin film mask, various solutions including a basic solution or an etching solution may be applied.
- an aluminum solid thin film mask 10-100 nm thick is deposited, after which the tip is mounted in a probe microscope. Then, the tip is brought intocontactwith the surface of silicon dioxide ( SiO 2 ) , and a predetermined end region thereof having a size of 10 ⁇ m x 10 ⁇ m is scanned for a predetermined period of time using a force of about 10-500 nN, thus removing the solid thin film mask from the end of the tip.
- silicon dioxide SiO 2
- Al, Ti, SiO 2 , tin oxide, Co, Pd, Ag, Cr, Pb or the like may be used, in addition to Al.
- the adsorption material include, in addition to Au, conductive nanoparticles including Ni, Ag, Ti, Cr, Pt, ZnO, tin oxide, Pb, CeO 2 and SiO 2 , fluorescent nanoparticles including CdSe, CdS, ZnS, GaN, GaAs, PbSe, InAs, CdTe and PbS , magnetic nanoparticles including Fe 3 O 4 , CoPt, Ni/NiO, FeAl, FePt, Co and CoO, CNTs (Carbon Nanotubes ), SAMs ( Self Assembled Monolayers), DNAs ( DeoxyriboNucleic Acids), RNAs (RiboNucleic Acids), proteins, antigens, antibodies, cells and so on.
- CMP for flattening a semiconductor wafer may be used, or scanning wafer-scale tips in contact with the surface of silicon dioxide (SiO 2 ) may be adopted.
- the metal (Au) is deposited to a thickness of 10-1000 nm through sputtering or evaporation, thereby adsorbing the metal (Au) both on the end of the probe and on the surface of the solid thin film mask.
- the aluminum etchant used for removing the solid thin film mask is exemplary, and depending on the type of solid thin film mask, various solutions (e.g. a basic solution or an etching solution) may be applied.
- various solutions e.g. a basic solution or an etching solution
- the solid thin film mask can be completely removed from the surface of the tip together with various adsorption materials attached to the mask, thus preventing the change in the properties of the tip.
- all materials adsorbable through sputtering or evaporation can be adsorbed on the end of the tip, regardless of the properties of the nano-structure and the adsorption material .
- the nano-structure and the adsorption material can be adsorbed regardless of the surface material of the tip and the properties thereof.
- the tip having the nano-structure or the adsorption material adsorbed thereon can have a resolution several times higher than that of a conventional tip, and can also be applied in such fields as nano-FRET, nano-SERS imaging, magnetic force probe microscopy , etc.
- a nano-structure and an adsorption material are adsorbed on a tip of a probe microscope using a solid thin film mask and then the solid thin film mask is completely removed from the surface of the tip together with various adsorption materials attached to the mask, thus preventing a change in the properties of the tip.
- PVD Physical Vapor Deposition
- CVD Chemical Vapor Deposition
- thermal CVD low pressure CVD
- plasma enhanced CVD metal-organic CVD
- the nano-structure and the adsorption material can be adsorbed regardless of the surface material of the tip and the properties thereof.
- the solid thin film mask can be completely removed from the surface of the tip together with various adsorption materials attached to the mask, thus preventing the change in the properties of the tip.
- all materials adsorbable through sputtering or evaporation can be adsorbed on the end of the tip.
- the nano-structure and the adsorption material can be adsorbed regardless of the surface material of the tip and the properties thereof.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US12/747,396 US20100270265A1 (en) | 2007-08-09 | 2008-11-18 | Method for adsorption of nano-structure and adsorption matter using solid thin film mask |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR1020070127849A KR20090015779A (en) | 2007-08-09 | 2007-12-10 | A method for adsorption using solid thin film mask of nano-particle and adsorption matter |
KR10-2007-0127849 | 2007-12-10 |
Publications (3)
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WO2009075481A2 true WO2009075481A2 (en) | 2009-06-18 |
WO2009075481A3 WO2009075481A3 (en) | 2009-08-27 |
WO2009075481A8 WO2009075481A8 (en) | 2010-07-01 |
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PCT/KR2008/006787 WO2009075481A2 (en) | 2007-08-09 | 2008-11-18 | A method for adsorption using solid thin film mask of nano-particle and adsorption matter |
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WO (1) | WO2009075481A2 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003287488A (en) * | 2002-03-27 | 2003-10-10 | Unisoku Co Ltd | Method and apparatus for manufacturing probe for scanning probe microscope, and probe manufactured by the same method |
US6730905B2 (en) * | 2000-09-21 | 2004-05-04 | Matsushita Electric Industrial Co., Ltd. | Scanning probe microscopy, method of producing the probe, and molecular processing method using the scanning probe microscope |
KR20060002146A (en) * | 2004-07-01 | 2006-01-09 | 한국기계연구원 | The attaching method of nano materials using langmuir-blodgett |
KR20060052558A (en) * | 2004-11-12 | 2006-05-19 | 재단법인서울대학교산학협력재단 | Method to assemble nanostructures at the end of scanning probe microscope's probe and scanning probe microscope with the probe |
KR20070072222A (en) * | 2005-12-31 | 2007-07-04 | 성균관대학교산학협력단 | Apparatus and method for manufacturing carbon nano-tube probe by using metallic vessel as a electrode |
-
2008
- 2008-11-18 KR KR1020107012837A patent/KR20100087740A/en not_active Application Discontinuation
- 2008-11-18 WO PCT/KR2008/006787 patent/WO2009075481A2/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6730905B2 (en) * | 2000-09-21 | 2004-05-04 | Matsushita Electric Industrial Co., Ltd. | Scanning probe microscopy, method of producing the probe, and molecular processing method using the scanning probe microscope |
JP2003287488A (en) * | 2002-03-27 | 2003-10-10 | Unisoku Co Ltd | Method and apparatus for manufacturing probe for scanning probe microscope, and probe manufactured by the same method |
KR20060002146A (en) * | 2004-07-01 | 2006-01-09 | 한국기계연구원 | The attaching method of nano materials using langmuir-blodgett |
KR20060052558A (en) * | 2004-11-12 | 2006-05-19 | 재단법인서울대학교산학협력재단 | Method to assemble nanostructures at the end of scanning probe microscope's probe and scanning probe microscope with the probe |
KR20070072222A (en) * | 2005-12-31 | 2007-07-04 | 성균관대학교산학협력단 | Apparatus and method for manufacturing carbon nano-tube probe by using metallic vessel as a electrode |
Also Published As
Publication number | Publication date |
---|---|
WO2009075481A3 (en) | 2009-08-27 |
WO2009075481A8 (en) | 2010-07-01 |
KR20100087740A (en) | 2010-08-05 |
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