JP5421541B2 - 原子レベルで尖ったイリジウムチップ - Google Patents
原子レベルで尖ったイリジウムチップ Download PDFInfo
- Publication number
- JP5421541B2 JP5421541B2 JP2008047646A JP2008047646A JP5421541B2 JP 5421541 B2 JP5421541 B2 JP 5421541B2 JP 2008047646 A JP2008047646 A JP 2008047646A JP 2008047646 A JP2008047646 A JP 2008047646A JP 5421541 B2 JP5421541 B2 JP 5421541B2
- Authority
- JP
- Japan
- Prior art keywords
- iridium
- tip
- atomic level
- rod
- pointed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 title claims description 72
- 229910052741 iridium Inorganic materials 0.000 title claims description 59
- 239000001301 oxygen Substances 0.000 claims description 23
- 229910052760 oxygen Inorganic materials 0.000 claims description 23
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 21
- 238000005530 etching Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 239000013078 crystal Substances 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000000992 sputter etching Methods 0.000 claims description 3
- 239000008151 electrolyte solution Substances 0.000 claims 2
- 239000007864 aqueous solution Substances 0.000 claims 1
- 150000002500 ions Chemical class 0.000 description 17
- 238000010884 ion-beam technique Methods 0.000 description 11
- 238000010894 electron beam technology Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 230000005684 electric field Effects 0.000 description 7
- 238000000137 annealing Methods 0.000 description 6
- 239000000523 sample Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 238000005498 polishing Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- 230000001427 coherent effect Effects 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 3
- 229910001882 dioxygen Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- -1 O 2 + Chemical class 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 238000001093 holography Methods 0.000 description 2
- 239000002110 nanocone Substances 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000011833 salt mixture Substances 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 229910000575 Ir alloy Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 239000013626 chemical specie Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000000609 electron-beam lithography Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 238000004863 hard-sphere model Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005305 interferometry Methods 0.000 description 1
- 238000002164 ion-beam lithography Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004621 scanning probe microscopy Methods 0.000 description 1
- 238000001004 secondary ion mass spectrometry Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01Q—SCANNING-PROBE TECHNIQUES OR APPARATUS; APPLICATIONS OF SCANNING-PROBE TECHNIQUES, e.g. SCANNING PROBE MICROSCOPY [SPM]
- G01Q60/00—Particular types of SPM [Scanning Probe Microscopy] or microscopes; Essential components thereof
- G01Q60/10—STM [Scanning Tunnelling Microscopy] or apparatus therefor, e.g. STM probes
- G01Q60/16—Probes, their manufacture, or their related instrumentation, e.g. holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y35/00—Methods or apparatus for measurement or analysis of nanostructures
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/26—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for needles; for teeth for card-clothing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/14—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of noble metals or alloys based thereon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/30—Cold cathodes, e.g. field-emissive cathode
- H01J1/304—Field-emissive cathodes
- H01J1/3042—Field-emissive cathodes microengineered, e.g. Spindt-type
- H01J1/3044—Point emitters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/26—Electron or ion microscopes; Electron or ion diffraction tubes
- H01J37/28—Electron or ion microscopes; Electron or ion diffraction tubes with scanning beams
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/26—Electron or ion microscopes; Electron or ion diffraction tubes
- H01J37/285—Emission microscopes, e.g. field-emission microscopes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/30—Electron-beam or ion-beam tubes for localised treatment of objects
- H01J37/305—Electron-beam or ion-beam tubes for localised treatment of objects for casting, melting, evaporating or etching
- H01J37/3053—Electron-beam or ion-beam tubes for localised treatment of objects for casting, melting, evaporating or etching for evaporating or etching
- H01J37/3056—Electron-beam or ion-beam tubes for localised treatment of objects for casting, melting, evaporating or etching for evaporating or etching for microworking, e.g. etching of gratings, trimming of electrical components
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/022—Manufacture of electrodes or electrode systems of cold cathodes
- H01J9/025—Manufacture of electrodes or electrode systems of cold cathodes of field emission cathodes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2201/00—Treatment for obtaining particular effects
- C21D2201/04—Single or very large crystals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2201/00—Electrodes common to discharge tubes
- H01J2201/30—Cold cathodes
- H01J2201/304—Field emission cathodes
- H01J2201/30403—Field emission cathodes characterised by the emitter shape
- H01J2201/30407—Microengineered point emitters
- H01J2201/30411—Microengineered point emitters conical shaped, e.g. Spindt type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2201/00—Electrodes common to discharge tubes
- H01J2201/30—Cold cathodes
- H01J2201/304—Field emission cathodes
- H01J2201/30446—Field emission cathodes characterised by the emitter material
- H01J2201/30449—Metals and metal alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2209/00—Apparatus and processes for manufacture of discharge tubes
- H01J2209/02—Manufacture of cathodes
- H01J2209/022—Cold cathodes
- H01J2209/0223—Field emission cathodes
- H01J2209/0226—Sharpening or resharpening of emitting point or edge
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/06—Sources
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/06—Sources
- H01J2237/08—Ion sources
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/06—Sources
- H01J2237/08—Ion sources
- H01J2237/0802—Field ionization sources
- H01J2237/0807—Gas field ion sources [GFIS]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/30—Electron or ion beam tubes for processing objects
- H01J2237/31—Processing objects on a macro-scale
- H01J2237/3114—Machining
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S977/00—Nanotechnology
- Y10S977/84—Manufacture, treatment, or detection of nanostructure
- Y10S977/842—Manufacture, treatment, or detection of nanostructure for carbon nanotubes or fullerenes
- Y10S977/848—Tube end modifications, e.g. capping, joining, splicing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S977/00—Nanotechnology
- Y10S977/84—Manufacture, treatment, or detection of nanostructure
- Y10S977/90—Manufacture, treatment, or detection of nanostructure having step or means utilizing mechanical or thermal property, e.g. pressure, heat
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S977/00—Nanotechnology
- Y10S977/902—Specified use of nanostructure
- Y10S977/932—Specified use of nanostructure for electronic or optoelectronic application
- Y10S977/949—Radiation emitter using nanostructure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S977/00—Nanotechnology
- Y10S977/902—Specified use of nanostructure
- Y10S977/932—Specified use of nanostructure for electronic or optoelectronic application
- Y10S977/949—Radiation emitter using nanostructure
- Y10S977/95—Electromagnetic energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12389—All metal or with adjacent metals having variation in thickness
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Plasma & Fusion (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Nanotechnology (AREA)
- Cold Cathode And The Manufacture (AREA)
- Electron Sources, Ion Sources (AREA)
Description
Ir多結晶ワイヤ(Irワイヤは直径0.1mmで、約5mmの長さ)が電気化学エッチングされて、鋭い端を形成した。その手順は以下のとおりである。重量比が1:1のNaNO3とKOHは白金るつぼで混合されて、加熱され、融解塩混合物を形成した。イリジウムワイヤは、ワイヤと対極に供給される7−9V(rms)のAC電圧を有する融解塩混合物に沈積された。周波数は60〜300Hzに設定した。エッチング後、Irワイヤは水とアセトンで洗浄された。SEM(走査型電子顕微鏡)測定により、エッチングされたIrワイヤは半径が約200nmの鋭い端を有した。
Irワイヤがチャンバに配置された後、酸素雰囲気で、500℃、その後、1500℃で2秒以下で加熱された。酸素圧は約2.66644×10-2パスカルである。
上記の(PO2=2.66644×10-2パスカル)の酸素圧で、ワイヤは400〜600℃で5分間アニールされた。
Irチップも錐体の原子構造もFIMにより特性化された。錐体の最上層から生成されるFIMピクチャは、イリジウム原子だけが検出され、上述の処理の後、イリジウムの単一の原子チップの形成が確認された。最上部の原子はその後、電界蒸発により除去されて、第二層を露出した。三つのIr原子は、錐体の第二層から検出された。第二層も電界蒸発により除去された。三つの原子頂上部が検出され、三角錐がIrワイヤの鋭い端上に形成されたことが確認された。単一の原子チップを有する錐体の原子硬球モデルは、FIM結果にうまく適合し、さらに、錐体の境界が明瞭な原子構造であることが実証された。
チャンバで、Ir−SATは上述のように作成された。圧力が6.6661パスカルに達するまで、酸素ガスがチャンバに入れられた。正の高圧がチップに印加されて、3mAの酸素イオンビームを電界放出した。一つの明るい酸素イオンビームだけが、半延長角〜0.6度の単一原子チップ頂端から発射された。輝度が7x1010A/(m2・Sr)に達するビームは、酸素プラズマ(輝度〜106A/(m2・Sr))より四桁大きく、電流ガリウム集中イオンビーム(輝度〜109A/m2/Sr)よりも大きかった。放出電流は、全テストを安定してパスした。Ir−SATは、様々なイオンビームを150時間以上に渡り発光するガス田イオンとして用いられ、活性O2 +イオン、H+、He+、Ne+およびAr+を含んだ。損傷または劣化がないことが観測された。それゆえに、Ir−SATは実用的なイオン源として用いるのに適する。
12 テーパ端
14 錐体
Claims (13)
- 原子レベルで尖ったイリジウムチップの作成方法であって、
イリジウム棒の少なくとも一方の端をテーパ状にするテーパ工程と、
酸素を含むチャンバ内で、前記棒を加熱し、錐体構造を前記テーパ状端上に形成する加熱工程とからなり、
前記錐体構造は原子レベルで尖ったイリジウムチップを含むことを特徴とする原子レベルで尖ったイリジウムチップの作成方法。 - 前記イリジウム棒は単結晶<210>棒であることを特徴とする請求項1記載の原子レベルで尖ったイリジウムチップの作成方法。
- 前記加熱工程は、10秒以下で、500〜2000℃の第一温度により急速加熱し、1〜15分間、第一温度以下の第二温度で加熱することを特徴とする請求項1または2記載の原子レベルで尖ったイリジウムチップの作成方法。
- 前記チャンバは、1.33322×10-3〜1.33322パスカルの酸素圧を有することを特徴とする請求項1、2または3記載の原子レベルで尖ったイリジウムチップの作成方法。
- 前記錐体構造は単一原子のイリジウムチップを有することを特徴とする請求項1、2、3または4記載の原子レベルで尖ったイリジウムチップの作成方法。
- 前記テーパ工程は、電気化学エッチング、機械研削またはイオンミリングにより実行され、前記テーパ状端は5〜200nmの半径を有することを特徴とする請求項1、2、3、4または5記載の原子レベルで尖ったイリジウムチップの作成方法。
- 前記テーパ工程は、0.5〜20Vの電圧、1mA〜1Aの電流を有する電解液中で、前記イリジウム棒を電気化学エッチングすることにより実行されることを特徴とする請求項1、2、3、4、5または6記載の原子レベルで尖ったイリジウムチップの作成方法。
- 前記電解液は、KCN水溶液、またはNaNO3、NaOH、KOH、KNO3あるいはKCl3からなる群から選択される二つ以上の融解塩の混合物であることを特徴とする請求項7記載の原子レベルで尖ったイリジウムチップの作成方法。
- 前記イリジウム棒は多結晶であることを特徴とする請求項1記載の原子レベルで尖ったイリジウムチップの作成方法。
- イリジウム針であって、
イリジウム結晶{210}面である表面を有するテーパ状端と、
前記表面に配置される錐体構造と、
からなり、前記錐体構造は、前記表面から離れたチップを有し、前記チップは少量のイリジウム原子により形成されることを特徴とするイリジウム針。 - 前記イリジウム針は、単結晶<210>イリジウム棒により形成されることを特徴とする請求項10記載のイリジウム針。
- 前記テーパ状端は、半径が5nm〜200nmであることを特徴とする請求項10または11記載のイリジウム針。
- 前記チップは単一のイリジウム原子からなることを特徴とする請求項10、11または12記載のイリジウム針。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/924,692 | 2007-10-26 | ||
US11/924,692 US7737414B2 (en) | 2007-10-26 | 2007-10-26 | Atomically sharp iridium tip |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009107105A JP2009107105A (ja) | 2009-05-21 |
JP5421541B2 true JP5421541B2 (ja) | 2014-02-19 |
Family
ID=40583231
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008047646A Expired - Fee Related JP5421541B2 (ja) | 2007-10-26 | 2008-02-28 | 原子レベルで尖ったイリジウムチップ |
Country Status (3)
Country | Link |
---|---|
US (1) | US7737414B2 (ja) |
JP (1) | JP5421541B2 (ja) |
TW (1) | TWI381164B (ja) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2110843B1 (en) * | 2008-04-15 | 2011-08-24 | ICT Integrated Circuit Testing Gesellschaft für Halbleiterprüftechnik mbH | Stable emission gas ion source and method of operation thereof |
WO2009140441A2 (en) * | 2008-05-13 | 2009-11-19 | Nanoink, Inc. | Height sensing cantilever |
WO2010132221A2 (en) | 2009-05-12 | 2010-11-18 | Carl Zeiss Nts, Llc. | Gas field ion microscopes having multiple operation modes |
US8847173B2 (en) | 2010-08-06 | 2014-09-30 | Hitachi High-Technologies Corporation | Gas field ion source and method for using same, ion beam device, and emitter tip and method for manufacturing same |
CN102842474B (zh) * | 2011-06-22 | 2015-11-25 | 中国电子科技集团公司第三十八研究所 | 粒子源及其制造方法 |
JP6001292B2 (ja) * | 2012-03-23 | 2016-10-05 | 株式会社日立ハイテクサイエンス | エミッタの作製方法 |
US8765725B2 (en) | 2012-05-08 | 2014-07-01 | Aciex Therapeutics, Inc. | Preparations of hydrophobic therapeutic agents, methods of manufacture and use thereof |
EP2847207B1 (en) | 2012-05-08 | 2019-03-27 | Nicox Ophthalmics, Inc. | Fluticasone propionate nanocrystals |
US9815865B2 (en) | 2013-01-07 | 2017-11-14 | Nicox Ophthalmics, Inc. | Preparations of hydrophobic therapeutic agents, methods of manufacture and use thereof |
JP6266458B2 (ja) | 2013-08-09 | 2018-01-24 | 株式会社日立ハイテクサイエンス | イリジウムティップ、ガス電界電離イオン源、集束イオンビーム装置、電子源、電子顕微鏡、電子ビーム応用分析装置、イオン電子複合ビーム装置、走査プローブ顕微鏡、およびマスク修正装置 |
JP6490917B2 (ja) * | 2013-08-23 | 2019-03-27 | 株式会社日立ハイテクサイエンス | 修正装置 |
JP6560871B2 (ja) | 2015-02-03 | 2019-08-14 | 株式会社日立ハイテクサイエンス | 集束イオンビーム装置 |
US10083812B1 (en) * | 2015-12-04 | 2018-09-25 | Applied Physics Technologies, Inc. | Thermionic-enhanced field emission electron source composed of transition metal carbide material with sharp emitter end-form |
JP7007642B2 (ja) * | 2017-11-30 | 2022-02-10 | 国立大学法人北陸先端科学技術大学院大学 | 単原子終端構造を有するティップおよび単原子終端構造を有するティップの製造方法 |
US11233017B2 (en) * | 2019-10-03 | 2022-01-25 | Texas Instruments Incorporated | Ex-situ manufacture of metal micro-wires and FIB placement in IC circuits |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3775121A (en) * | 1972-08-09 | 1973-11-27 | Western Electric Co | Method of selectively depositing a metal on a surface of a substrate |
US5630932A (en) * | 1995-09-06 | 1997-05-20 | Molecular Imaging Corporation | Tip etching system and method for etching platinum-containing wire |
US6249965B1 (en) * | 1997-10-15 | 2001-06-26 | Huntington Medical Research Institutes | Methods for making small-diameter iridium electrodes |
IL122937A (en) * | 1998-01-14 | 2003-05-29 | Technion Res & Dev Foundation | Process and apparatus for etching a semiconductor material |
US7032437B2 (en) * | 2000-09-08 | 2006-04-25 | Fei Company | Directed growth of nanotubes on a catalyst |
US7082683B2 (en) * | 2003-04-24 | 2006-08-01 | Korea Institute Of Machinery & Materials | Method for attaching rod-shaped nano structure to probe holder |
US7368727B2 (en) * | 2003-10-16 | 2008-05-06 | Alis Technology Corporation | Atomic level ion source and method of manufacture and operation |
US7507320B2 (en) * | 2004-10-09 | 2009-03-24 | Academia Sinica | Single-atom tip and preparation method thereof |
US7098144B2 (en) * | 2004-10-21 | 2006-08-29 | Sharp Laboratories Of America, Inc. | Iridium oxide nanotubes and method for forming same |
JP4543129B2 (ja) * | 2004-11-04 | 2010-09-15 | 学校法人早稲田大学 | 電子光学装置用電子ビーム源及びその製造方法 |
JP2006189276A (ja) * | 2005-01-04 | 2006-07-20 | Academia Sinica | 単原子チップ及びその調製方法 |
US7309353B2 (en) * | 2005-04-29 | 2007-12-18 | Medtronic Vascular, Inc. | Use of platinum group metals in vascular devices and method of texturing platinum group metals |
US20090320991A1 (en) * | 2005-09-30 | 2009-12-31 | Paul Boyle | Methods of synthesis of nanotubes and uses thereof |
US7585474B2 (en) * | 2005-10-13 | 2009-09-08 | The Research Foundation Of State University Of New York | Ternary oxide nanostructures and methods of making same |
US7408366B2 (en) * | 2006-02-13 | 2008-08-05 | Georgia Tech Research Corporation | Probe tips and method of making same |
-
2007
- 2007-10-26 US US11/924,692 patent/US7737414B2/en not_active Expired - Fee Related
-
2008
- 2008-02-28 JP JP2008047646A patent/JP5421541B2/ja not_active Expired - Fee Related
- 2008-03-04 TW TW097107471A patent/TWI381164B/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JP2009107105A (ja) | 2009-05-21 |
TWI381164B (zh) | 2013-01-01 |
US7737414B2 (en) | 2010-06-15 |
TW200919485A (en) | 2009-05-01 |
US20090110951A1 (en) | 2009-04-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5421541B2 (ja) | 原子レベルで尖ったイリジウムチップ | |
US7888654B2 (en) | Cold field emitter | |
Kuo et al. | Noble metal/W (111) single-atom tips and their field electron and ion emission characteristics | |
Iwami et al. | Preparation of silver tips for scanning tunneling microscopy imaging | |
US20070025907A1 (en) | Nano-tip fabrication by spatially controlled etching | |
CN109804450B (zh) | 电子束装置 | |
US9102190B2 (en) | Method of fabricating nanotips with controlled profile | |
US9240301B1 (en) | Thermal-field type electron source composed of transition metal carbide material with artificial facet | |
EP2242084B1 (en) | Method of manufacturing an electron source | |
JP3582855B2 (ja) | 熱電界放射陰極及びその製造方法 | |
KR100264365B1 (ko) | 니들 전극 및 전자 에미터용 니들 전극의 제조방법 | |
JP4292108B2 (ja) | 電子源及びその製造方法 | |
US8460049B2 (en) | Fabrication of super ion—electron source and nanoprobe by local electron bombardment | |
Ahmed et al. | Field assisted reactive gas etching of multiple tips observed using FIM | |
JP7295974B2 (ja) | 電子源、電子線装置および電子源の製造方法 | |
JP5173516B2 (ja) | 電子源及び電子源の製造方法 | |
Rezeq et al. | A well defined electron beam source produced by the controlled field assisted etchingof metal tips to< 1 nm radius | |
Asai et al. | Dependence of Curvature Radii of the Apexes of W Tips on Growth of Au-and Pd-Coated Nanopyramid | |
Asai et al. | Fabrication of Pt-and Au-coated W Nano Tip with Electroplated Films as a Noble-metal Source toward Viable Application for Long-life Electron Source | |
JP2007265685A (ja) | 電子源用探針 | |
Rokuta et al. | Field Emission Microscopy Study of Au-Covered Nanopyramids with 211-Facet Sides Grown on Blunt W Tips via Assistive Remolding Treatment | |
JP2009187922A (ja) | ダイヤモンド電子源の製造方法及びダイヤモンド電子源 | |
Okuyama et al. | Growth of a near-atomic protrusion on molybdenum field emitter tips under argon ion bombardment | |
Ali et al. | Reproducibility and field emission characteristics of nanotips fabricated by local electron bombardment | |
Kim et al. | Fabrication and beam characteristics of an ultra-sharp electrode for field emission electron beam |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
RD03 | Notification of appointment of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7423 Effective date: 20101109 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20101206 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20130430 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20130716 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20130903 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20131017 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20131105 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20131122 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 5421541 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |