JP2012505551A - 調整可能な抵抗を備えたシリコン系ナノスケール抵抗素子 - Google Patents
調整可能な抵抗を備えたシリコン系ナノスケール抵抗素子 Download PDFInfo
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims description 39
- 229910052710 silicon Inorganic materials 0.000 title claims description 29
- 239000010703 silicon Substances 0.000 title claims description 29
- 229910021417 amorphous silicon Inorganic materials 0.000 claims abstract description 125
- 239000002086 nanomaterial Substances 0.000 claims abstract description 38
- 229910052751 metal Inorganic materials 0.000 claims abstract description 31
- 239000002184 metal Substances 0.000 claims abstract description 31
- 230000015654 memory Effects 0.000 claims abstract description 25
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 17
- 229920005591 polysilicon Polymers 0.000 claims abstract description 12
- 230000004044 response Effects 0.000 claims abstract description 9
- 229910052709 silver Inorganic materials 0.000 claims abstract description 5
- 239000004332 silver Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 32
- 238000003860 storage Methods 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 8
- 229910021645 metal ion Inorganic materials 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 239000002061 nanopillar Substances 0.000 abstract description 4
- 210000004027 cell Anatomy 0.000 description 23
- 239000000758 substrate Substances 0.000 description 17
- 230000008569 process Effects 0.000 description 16
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 150000002500 ions Chemical class 0.000 description 7
- 230000007704 transition Effects 0.000 description 7
- 230000004913 activation Effects 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 6
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- 239000002245 particle Substances 0.000 description 6
- 230000001419 dependent effect Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052697 platinum Inorganic materials 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910021423 nanocrystalline silicon Inorganic materials 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000005641 tunneling Effects 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000005468 ion implantation Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 208000033999 Device damage Diseases 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 150000004770 chalcogenides Chemical class 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000010416 ion conductor Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- -1 nanocolumns Substances 0.000 description 1
- 239000002121 nanofiber Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 239000002073 nanorod Substances 0.000 description 1
- 239000002071 nanotube Substances 0.000 description 1
- 239000002070 nanowire Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 210000000352 storage cell Anatomy 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
Classifications
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- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
- G11C13/0002—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using resistive RAM [RRAM] elements
- G11C13/0021—Auxiliary circuits
- G11C13/0069—Writing or programming circuits or methods
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/20—Multistable switching devices, e.g. memristors
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/56—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using storage elements with more than two stable states represented by steps, e.g. of voltage, current, phase, frequency
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
- G11C13/0002—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using resistive RAM [RRAM] elements
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
- G11C13/0002—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using resistive RAM [RRAM] elements
- G11C13/0021—Auxiliary circuits
- G11C13/003—Cell access
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B63/00—Resistance change memory devices, e.g. resistive RAM [ReRAM] devices
- H10B63/20—Resistance change memory devices, e.g. resistive RAM [ReRAM] devices comprising selection components having two electrodes, e.g. diodes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B63/00—Resistance change memory devices, e.g. resistive RAM [ReRAM] devices
- H10B63/30—Resistance change memory devices, e.g. resistive RAM [ReRAM] devices comprising selection components having three or more electrodes, e.g. transistors
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B63/00—Resistance change memory devices, e.g. resistive RAM [ReRAM] devices
- H10B63/80—Arrangements comprising multiple bistable or multi-stable switching components of the same type on a plane parallel to the substrate, e.g. cross-point arrays
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/20—Multistable switching devices, e.g. memristors
- H10N70/24—Multistable switching devices, e.g. memristors based on migration or redistribution of ionic species, e.g. anions, vacancies
- H10N70/245—Multistable switching devices, e.g. memristors based on migration or redistribution of ionic species, e.g. anions, vacancies the species being metal cations, e.g. programmable metallization cells
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/821—Device geometry
- H10N70/826—Device geometry adapted for essentially vertical current flow, e.g. sandwich or pillar type devices
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/841—Electrodes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/881—Switching materials
- H10N70/884—Switching materials based on at least one element of group IIIA, IVA or VA, e.g. elemental or compound semiconductors
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C2213/00—Indexing scheme relating to G11C13/00 for features not covered by this group
- G11C2213/10—Resistive cells; Technology aspects
- G11C2213/11—Metal ion trapping, i.e. using memory material including cavities, pores or spaces in form of tunnels or channels wherein metal ions can be trapped but do not react and form an electro-deposit creating filaments or dendrites
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C2213/00—Indexing scheme relating to G11C13/00 for features not covered by this group
- G11C2213/10—Resistive cells; Technology aspects
- G11C2213/15—Current-voltage curve
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
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- G11C2213/30—Resistive cell, memory material aspects
- G11C2213/33—Material including silicon
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- G—PHYSICS
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- G11C—STATIC STORES
- G11C2213/00—Indexing scheme relating to G11C13/00 for features not covered by this group
- G11C2213/70—Resistive array aspects
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Abstract
Description
Claims (30)
- 不揮発固体抵抗素子であって、
第1電極;
p型シリコン第2電極;および
前記電極間に電気的に接続された非結晶質シリコンナノ構造を含み、前記ナノ構造は前記電極を介して前記ナノ構造に印加される電圧に応答して調整可能な抵抗を有することを特徴とする抵抗素子。 - 前記非結晶質シリコンナノ構造は非晶質シリコンナノ構造を含むことを特徴とする請求項1に記載の抵抗素子。
- 前記シリコン第2電極はp型ドープポリシリコン電極を含むことを特徴とする請求項1に記載の抵抗素子。
- 前記シリコンナノ構造は対向する端面を有するピラーを含み、各電極は前記端面の異なる1つに接していることを特徴とする請求項1に記載の抵抗素子。
- 前記シリコンナノ構造は空間3次元の全てにおいてナノスケールであることを特徴とする請求項1に記載の抵抗素子。
- 前記次元の各々が100nm未満であることを特徴とする請求項5に記載の抵抗素子。
- 前記シリコンナノ構造へ電気的に直列接続される1以上の抵抗要素をさらに含むことを特徴とする請求項1に記載の抵抗素子
- 前記抵抗要素は制御抵抗を含むことを特徴とする請求項7に記載の抵抗素子。
- 前記シリコンナノ構造へ接続される抵抗の総量を選択的に変えるように動作し得る回路とともに1以上の抵抗要素を含む制御回路をさらに含むことを特徴とする請求項1に記載の抵抗素子。
- 2つ以上の抵抗値間で前記シリコンナノ構造の抵抗を調整するように動作し得る制御回路をさらに含むことを特徴とする請求項1に記載の抵抗素子。
- 前記制御回路は前記シリコンナノ構造に直列接続される制御抵抗を与え、前記制御回路はその制御抵抗を関連する抵抗値に設定することによってシリコンナノ構造の抵抗を任意の抵抗値に調整するように動作可能であることを特徴とする請求項10に記載の抵抗素子。
- 前記抵抗素子が前記シリコンナノ構造に直列のダイオードを含むように、前記p型第2電極に接するn型ドープシリコン層をさらに含むことを特徴とする請求項1に記載の抵抗素子。
- 前記第1電極は金属電極であり、前記複数の電極を横切る印加電極の存在において前記シリコンナノ構造内にフィラメントを形成する金属イオンを供給することを特徴とする請求項1に記載の抵抗素子。
- 前記第1電極は銀を含むことを特徴とする請求項13に記載の抵抗素子。
- 前記シリコンナノ構造近くの位置において前記p型シリコン電極と接している第2金属電極をさらに含むことを特徴とする請求項13に記載の抵抗素子。
- 前記第2金属電極は前記シリコンナノ構造から100nm以下だけ隔てられていることを特徴とする請求項15に記載の抵抗素子。
- 請求項1の抵抗素子を含む少なくとも1つのメモリセルを有するデジタル不揮発メモリ装置。
- 前記抵抗素子のシリコンナノ構造は前記メモリセル内の唯一のシリコンナノ構造であって調整可能な抵抗を有し、その調整可能な抵抗は異なる記憶数に対応する3以上の抵抗のいずれかに設定可能であって、それによって前記メモリセルがマルチレベル数記憶であり得ることを特徴とする請求項17に記載のメモリ装置。
- メモリセル内にストアされるべき数に基づいて調整可能な抵抗値を設定するための制御回路をさらに含むことを特徴とする請求項18に記載のメモリ装置。
- 制御回路は前記シリコンナノ構造に直列の制御抵抗を含むことを特徴とする請求項19に記載のメモリ装置。
- 請求項1の抵抗素子を含む電気的相互接続を有することを特徴とする電子回路。
- 不揮発固体抵抗素子であって、
第1金属電極;
p型ポリシリコン電極;
前記電極間で少なくとも部分的に配置された絶縁層;および
前記電極の異なる1つに接続された対向面を有しかつ前記絶縁層内に埋め込まれた非晶質シリコン構造を含み、前記第1電極は前記複数の電極を横切る印加電圧の存在において前記シリコン構造内にフィラメントを形成する金属イオンを供給する金属を含み、それによって前記シリコン構造は印加電極に基づいて調整され得る抵抗を示し;
前記シリコン構造から100nm以下の位置において前記ポリシリコン電極に接する第2金属電極をさらに含むことを特徴とする抵抗素子。 - 前記絶縁層はスピンオングラス層を含むことを特徴とする請求項22に記載の抵抗素子。
- 不揮発固体抵抗素子の抵抗を初期抵抗値から最終抵抗値へ調整する方法であって、
最終抵抗値に基づいて選択された抵抗を有する第2抵抗素子へ前記不揮発固体抵抗素子を電気的に直列接続し;
前記直列接続された複数の抵抗素子を横切って電圧を印加するステップを含むことを特徴とする方法。 - 前記印加するステップは、印加電圧の大きさ、印加電圧の持続時間、または双方に少なくとも部分的に基づいて最終抵抗値を設定することを含むことを特徴とする方法。
- 前記印加するステップは、選択された大きさと持続時間の電圧を直列接続される複数の抵抗素子を横切って印加することによって最終抵抗値を設定することを含むことを特徴とする請求項24に記載の方法。
- 最終抵抗値は複数の選択可能な抵抗値の1つであり、複数の抵抗素子を電気的に接続するステップは選択可能な抵抗値の選択された一つに基づいて前記不揮発固体抵抗素子へ1以上の制御抵抗を挿入または短絡させることによって前記第2抵抗素子を電気的に形成すること含むことを特徴とする請求項24に記載の方法。
- 前記不揮発固体抵抗素子へ逆極性のリセット電圧を印加することによって初期抵抗値へ前記不揮発固体抵抗素子をリセットするステップをさらに含むことを特徴とする請求項24に記載の方法。
- 不揮発固体スイッチング素子をオフ状態からオン状態へ調整する方法であって、非結晶質シリコンナノ構造を横切って電圧を印加するステップを含み、その印加電圧はオフ状態からオン状態への前記シリコンナノ構造のスイッチングの所定の確率を達成するように選択された大きさと持続時間を有していることを特徴とする方法。
- 前記印加するステップは、印加電圧に応答して前記非結晶質シリコンナノ構造内に導電性フィラメントを形成することを含むことを特徴とする方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10392808P | 2008-10-08 | 2008-10-08 | |
US61/103,928 | 2008-10-08 | ||
PCT/US2009/060023 WO2010042732A2 (en) | 2008-10-08 | 2009-10-08 | Silicon-based nanoscale resistive device with adjustable resistance |
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- 2009-10-08 JP JP2011531175A patent/JP5702725B2/ja not_active Expired - Fee Related
- 2009-10-08 CN CN200980139738.3A patent/CN102177584B/zh not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
EP2342750B1 (en) | 2015-01-28 |
JP5702725B2 (ja) | 2015-04-15 |
EP2342750A4 (en) | 2012-05-09 |
WO2010042732A3 (en) | 2010-07-08 |
US8687402B2 (en) | 2014-04-01 |
US20100085798A1 (en) | 2010-04-08 |
EP2342750A2 (en) | 2011-07-13 |
WO2010042732A2 (en) | 2010-04-15 |
CN102177584A (zh) | 2011-09-07 |
KR20110080153A (ko) | 2011-07-12 |
CN102177584B (zh) | 2014-05-07 |
US20140153317A1 (en) | 2014-06-05 |
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