WO2011114684A1 - 粘弾性の測定方法及び粘弾性の測定装置 - Google Patents
粘弾性の測定方法及び粘弾性の測定装置 Download PDFInfo
- Publication number
- WO2011114684A1 WO2011114684A1 PCT/JP2011/001456 JP2011001456W WO2011114684A1 WO 2011114684 A1 WO2011114684 A1 WO 2011114684A1 JP 2011001456 W JP2011001456 W JP 2011001456W WO 2011114684 A1 WO2011114684 A1 WO 2011114684A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- frequency
- measurement
- measuring
- substance
- viscoelasticity
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
- G01N11/16—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by measuring damping effect upon oscillatory body
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
- G01N2203/0008—High frequencies from 10 000 Hz
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0092—Visco-elasticity, solidification, curing, cross-linking degree, vulcanisation or strength properties of semi-solid materials
- G01N2203/0094—Visco-elasticity
Definitions
- the present invention relates to a method and a viscoelasticity measuring apparatus for measuring viscoelasticity of a solution or semi-solid measurement substance used in the fields of chemistry, materials, biochemistry and physics.
- a measuring apparatus using QCM quartz crystal microbalance
- QCM gallium carbide microbalance
- conventional viscoelasticity measuring methods can be broadly divided into a method for measuring static viscoelasticity such as steady flow measurement and constant velocity raising / lowering method, and a method for measuring dynamic viscoelasticity that gives deformation of frequency function.
- the dynamic viscoelasticity measurement method is widely used because the measurement sample can acquire information on the viscosity and viscoelasticity in a minute deformation state within a range in which structural destruction does not occur.
- a measurement sample of 0.5 mL to 50 mL is required even in a small amount.
- an object of the present invention is to provide a measurement method and a measurement apparatus that can measure viscoelasticity even if a measurement substance is a trace amount.
- a solution or semi-solid measurement substance is brought into contact with an electrode of a sensor composed of a crystal resonator, and the crystal resonator a change amount [Delta] F s of the resonant frequency F s, the first frequency F 1 and a second frequency F 2 of the half-value half frequencies of conductance 1 / 2G max is a half of the conductance G max of the resonance frequency F s (F 1 -F 2 ) / 2 change ⁇ F w is measured, and the storage elastic modulus G of the measurement substance is determined based on the difference between the squares of the resonance frequency change ⁇ F s and the half-value half-frequency change ⁇ F w.
- the storage elastic modulus G ′ is represented by the following formula 1.
- the loss elastic modulus G ′′ is expressed by the following formula 2, In the above formula, Z q is a shear stress of the crystal resonator, ⁇ v is a density of the measurement substance, and F 0 is a fundamental vibration frequency.
- the present invention according to claim 3 is characterized in that, in the measurement method, the measurement frequency is a fundamental wave or an overtone (3rd harmonic, 5th harmonic, 7th harmonic,...) Of the crystal resonator.
- the present invention according to claim 4 is characterized in that, in the measurement method, the measurement substance is brought into contact with only the electrode.
- the present invention according to claim 5 is characterized in that, in the measurement method, the measurement substance is 100 ⁇ L or less.
- the viscoelasticity measuring apparatus according to the present invention includes a sensor composed of a crystal resonator, a change amount ⁇ F s of the resonance frequency F s of the crystal resonator, and a resonance frequency F s as described in claim 6.
- the present invention it is possible to measure the viscoelasticity of a substance in the form of a solution or semi-solid, for example, even when the quantity is 100 ⁇ L or less.
- the above-mentioned viscoelasticity in the present invention refers to a property having a solid elastic component and a liquid viscous component at the same time.
- the viscoelasticity is generally represented by a complex elastic modulus G * and is represented by a complex number of G ′ (storage elastic modulus) and G ′′ (loss elastic modulus) as shown in Equation 3 below.
- the storage elastic modulus (G ') is a component in which the energy of strain is stored inside the material as stress, and represents the elastic component of the material
- the loss elastic modulus (G'') is the energy given to the material such as heat.
- the substance having the viscoelasticity and the object of measurement in the present invention include polymer solutions, colloidal solutions, gels, rubbers, and the like.
- the amount of change ⁇ Fs of the resonance frequency Fs when the measurement substance is brought into contact with the crystal resonator and vibrated by the fundamental wave, and the half-value half width (F in the conductance waveform of the resonance frequency Fs) 1 ⁇ F 2 ) / 2 is used to measure the viscoelastic modulus of the measured substance using the change amount ⁇ F W.
- F 1 and F 2 are a resonance frequency Fs at which the crystal resonator is placed in series and a magnitude G max / 2 that is half of the conductance G max when the crystal resonator is in the resonance state.
- the first frequency F 1 and the second frequency F 2 (F 1 ⁇ F 2 ) giving a half-value conductance of Using the above values, the viscoelastic moduli G ′ and G ′′ of the solution or semi-solid are expressed by the following equations 4 and 5.
- Z q represents the shear stress (gm / sec / cm 2 ) of the crystal resonator
- ⁇ v represents the density of the measurement substance (g / cm 3 )
- F 0 represents the fundamental vibration frequency.
- G ′ storage modulus
- G ′′ loss modulus
- the resonance frequency includes frequencies in the vicinity of the resonance frequency, and includes, for example, scanning up to a range of about ⁇ 500 kHz.
- the amount of the measurement substance is not particularly limited, and the measurement substance 3 is injected into a structure in which the crystal unit 1 is provided on the bottom surface of the container 2 as shown in FIG.
- the measurement substance 5 may be brought into contact only with the electrodes 4 constituting the crystal resonator 1.
- the amount depends on the diameter of the electrode 4, in the case of a diameter of 2.5 mm, it is possible to measure with a very small amount of liquid of 10 ⁇ L.
- the penetration depth of thickness-shear vibration in pure water is about 0.1 ⁇ m for a 27 MHz crystal unit and about 0.2 ⁇ m for a 5 MHz crystal unit, so the liquid volume covering the crystal unit electrode is 100 ⁇ L. It can be seen that the amount of the substance is sufficient, and that a semi-solid substance such as gel or grease is sufficient to be applied to the electrode by several millimeters.
- the measuring apparatus shown in FIG. 4 includes a measuring means including a sensor unit 6 having a crystal resonator and a network analyzer 7, and a Beltier element provided below the sensor unit 6 in order to adjust the temperature of the sensor unit 6. 8 and a temperature control means composed of a Peltier controller 9, for performing the calculations of Equations 6 and 7 described above based on the control means for performing each system, the display means for measurement results, etc., and the measurement results Are connected to a computer 10 equipped with arithmetic means comprising a central processing unit and storage means comprising RAM / ROM.
- the crystal unit 1 of the sensor unit 2 has a front side and a back side of a quartz crystal plate 11 formed in a circular shape.
- a first gold electrode 12 and a second gold electrode 13 are provided on each side.
- the illustrated gold electrodes 12 and 13 are formed in a circular shape, and lead wires 12a and 13a are connected to the respective electrodes.
- the second gold electrode 13 on the back side is covered with a resin cover (not shown), and the second gold electrode 13 on the back side is not exposed to the solution even when the crystal unit 1 is placed in the solution. It is configured to be able to vibrate.
- the network analyzer 7 includes a signal supply circuit and a measurement circuit.
- the signal supply circuit is configured to output an AC input signal while changing the frequency.
- the measurement circuit is an output of the crystal unit 1. Based on the signal and the input signal output from the signal supply circuit, the electrical characteristics such as the resonance frequency and phase of the crystal unit 1 can be measured and output to the computer 10.
- FIG. 6 shows the results of obtaining G ′ and G ′′ using this frequency change amount and the density of bovine serum albumin (BSA) solution (assumed to be almost 1 because it is mostly pure water).
- BSA bovine serum albumin
- the present invention can be widely used when measuring viscoelasticity of a solution or semi-solid, including chemical, material, biochemical and physical fields.
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Abstract
Description
一方、従来における粘弾性の測定方法としては、大きく分けると、定常流測定や等速昇降法等の静的粘弾性を測定する方法と、周波数関数の変形を与える動的粘弾性を測定する方法との2つがある。特に、動的粘弾性の測定方法は、測定試料が、構造的に破壊を生じない範囲の微小な変形状態において、粘度や粘弾性の情報を取得することができることから広く使われている。
しかしながら、一般的な粘弾性の測定装置を使用して測定する場合には、少量でも0.5mL~50mLの測定試料が必要となっており、例えば、人体から微量に採取された物質や作動中の機械に実際に使用されているグリース等で多量に採取できないような物質の粘弾性の測定に適した測定方法は存在していなかった。
また、請求項2記載の発明は、上記測定方法において、前記貯蔵弾性率G'は、下記数1で表され、
また、請求項3記載の本発明は、上記測定方法において、測定周波数を前記水晶振動子の基本波又はオーバートーン(3倍波、5倍波、7倍波・・・)とすることを特徴とする。
また、請求項4記載の本発明は、上記測定方法において、前記測定物質は、前記電極のみに接触させることを特徴とする。
また、請求項5記載の本発明は、上記測定方法において、前記測定物質を100μL以下とすることを特徴とする。
次に、本発明の粘弾性の測定装置は、請求項6に記載の通り、水晶振動子から構成されたセンサーと、前記水晶振動子の共振周波数Fsの変化量ΔFs及び共振周波数FsのコンダクタンスGmaxの半値であるコンダクタンス1/2Gmaxとなる第1の周波数F1及び第2の周波数F2の半値半周波数(F1-F2)/2の変化量ΔFwを測定するための測定手段と、前記共振周波数の変化量ΔFs及び半値半周波数の変化量ΔFwのそれぞれの2乗差、及び、前記共振周波数の変化量ΔFs及び半値半周波数の変化量ΔFwの積を演算により求めるための演算手段とを備えたことを特徴とする。
粘弾性は、一般的には、複素弾性率G*で表され下記数3の通り、G'(貯蔵弾性率)とG''(損失弾性率)との複素数で表される。
この粘弾性を有する物質で、本発明における測定の対象となる物質としては、高分子溶液、コロイド溶液、ゲルやゴム等を挙げることができる。
F1及びF2は、図1に示すように、水晶振動子を直列状態に置く共振周波数Fsと、前記水晶振動子が共振状態にあるときのコンダクタンスGmaxの半分の大きさGmax/2の半値コンダクタンスを与える第一の周波数F1及び第二の周波数F2(F1<F2)をいうものとする。
上記値を使用して、溶液又は半固体の粘弾性率G'、G''は下記の数4及び数5で表される。
上記ΔFsとΔ(F1-F2)/2の周波数変化を測定し、溶液又は半固体の密度を代入することにより、下記の通り、粘弾性率G'、G''を求めることができる。
但し、水晶振動子1は中心の電極4の部分にのみ感度が集中しているため、図3に示すように、電極4のみに測定物質を接触させることが好ましく、この場合の測定物質3の量は電極4の直径の大きさにもよるが、直径2.5mmの場合は10μLの極微量液量での測定が可能である。
また、純水中における厚みすべり振動の侵入深度は27MHzの水晶振動子で約0.1μm、5MHzの水晶振動子で約0.2μmであることから、水晶振動子の電極を覆う液量は100μLの測定物質の量で十分であり、且つ、ゲルやグリース等の半固体の物質は電極上に数mm程度塗布することでも十分であることがわかる。
図4に示す測定装置は、水晶振動子を備えたセンサー部6及びネットワークアナライザー7から構成される測定手段と、センサー部6の温度調整を行うためにセンサー部6の下方に設けられたベルチェ素子8及びペルチェコントローラ9から構成される温調手段とから構成され、各系をするための制御手段、測定結果等の表示手段、測定結果に基づいて上述した数6及び数7の演算を行うために中央演算処理装置等から構成される演算手段、及び、RAM・ROM等から構成される記憶手段を備えたコンピュータ10に接続される。
ネットワークアナライザー7は、信号供給回路と測定回路とを備え、信号供給回路は、周波数を変化させながら交流の入力信号を出力することができるように構成され、測定回路は、水晶振動子1の出力信号や、信号供給回路から出力される入力信号に基づいて、水晶振動子1の共振周波数や位相等の電気的特性を測定して、コンピュータ10に出力することができるように構成されている。
図4で示した装置構成において、直径2.5mmの金電極12を備えた27MHzの水晶振動子1を使用した測定例を説明する。
洗浄した金電極12上に、牛血清アルブミン(BSA)溶液(濃度50mg/mL,75mg/mL,100mg/mL,150mg/mL,200mg/mL)を10μL載置してΔFsとΔFwの変化量を測定した結果を表1に示す。
図6から、本発明の測定方法によれば、10μLの測定物質(スポイト一滴分)でもその粘弾性のG'及びG''を正確に測定できることがわかる。
2 容器
3,5 溶液
4,12 (第一)電極
6 センサー部
7 ネットワークアナライザー
8 ペルチェ素子
9 ペルチェコントローラ
10 コンピュータ
12a,13a リード部
13 (第二)電極
Claims (6)
- 水晶振動子から構成されたセンサーの電極上に、溶液状又は半固体状の測定物質を接触させ、前記水晶振動子の共振周波数Fsの変化量ΔFsと、共振周波数FsのコンダクタンスGmaxの半値であるコンダクタンス1/2Gmaxとなる第1の周波数F1及び第2の周波数F2の半値半周波数(F1-F2)/2の変化量ΔFwを測定し、前記共振周波数の変化量ΔFs及び半値半周波数の変化量ΔFwのそれぞれの2乗の差に基づいて前記測定物質の貯蔵弾性率G'と、前記共振周波数の変化量ΔFs及び半値半周波数の変化量ΔFwの積に基づいて前記測定物質の損失弾性率G''との少なくとも何れかを求めることを特徴とする粘弾性の測定方法。
- 測定周波数を前記水晶振動子の基本波又はオーバートーン(3倍波、5倍波、7倍波・・・)とすることを特徴とする請求項1に記載の粘弾性の測定方法。
- 前記測定物質は、前記電極のみに接触させることを特徴とする請求項1に記載の粘弾性の測定方法。
- 前記測定物質を100μL以下とすることを特徴とする請求項1に記載の粘弾性の測定方法。
- 水晶振動子から構成されたセンサーと、
前記水晶振動子の共振周波数Fsの変化量ΔFs及び共振周波数FsのコンダクタンスGmaxの半値であるコンダクタンス1/2Gmaxとなる第1の周波数F1及び第2の周波数F2の半値半周波数(F1-F2)/2の変化量ΔFwを測定するための測定手段と、
前記共振周波数の変化量ΔFs及び半値半周波数の変化量ΔFwのそれぞれの2乗差、及び、前記共振周波数の変化量ΔFs及び半値半周波数の変化量ΔFwの積を演算により求めるための演算手段とを備えたことを特徴とする粘弾性の測定装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/634,584 US9146187B2 (en) | 2010-03-16 | 2011-03-14 | Viscoelasticity measuring method and viscoelasticity measuring apparatus |
JP2012505496A JP5379909B2 (ja) | 2010-03-16 | 2011-03-14 | 粘弾性の測定方法及び粘弾性の測定装置 |
CN201180011669.5A CN102782473B (zh) | 2010-03-16 | 2011-03-14 | 粘弹性的测定方法以及粘弹性的测定装置 |
KR1020127021835A KR101440203B1 (ko) | 2010-03-16 | 2011-03-14 | 점탄성 측정방법 및 점탄성 측정장치 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010059283 | 2010-03-16 | ||
JP2010-059283 | 2010-03-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011114684A1 true WO2011114684A1 (ja) | 2011-09-22 |
Family
ID=44648798
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/001456 WO2011114684A1 (ja) | 2010-03-16 | 2011-03-14 | 粘弾性の測定方法及び粘弾性の測定装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9146187B2 (ja) |
JP (1) | JP5379909B2 (ja) |
KR (1) | KR101440203B1 (ja) |
CN (1) | CN102782473B (ja) |
WO (1) | WO2011114684A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101440203B1 (ko) | 2010-03-16 | 2014-09-12 | 가부시키가이샤 알박 | 점탄성 측정방법 및 점탄성 측정장치 |
WO2016031138A1 (ja) * | 2014-08-26 | 2016-03-03 | 株式会社アルバック | 膜厚モニタおよび膜厚測定方法 |
JP2016223867A (ja) * | 2015-05-29 | 2016-12-28 | 東北電子産業株式会社 | 粘弾性特性の測定方法および測定装置 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102040458B1 (ko) * | 2015-07-30 | 2019-11-05 | 주식회사 엘지화학 | 고분자 분자량의 예측 장치 및 예측 방법 |
CN112782125B (zh) * | 2020-12-31 | 2023-02-28 | 西安理工大学 | 一种生物组织弹性模量测量装置及方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004325257A (ja) * | 2003-04-24 | 2004-11-18 | Ulvac Japan Ltd | 振動子を用いた分析方法 |
WO2007004376A1 (ja) * | 2005-06-30 | 2007-01-11 | Ulvac, Inc. | 水晶振動子を用いた測定方法及び測定装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2981456B2 (ja) * | 1998-02-04 | 1999-11-22 | 日本碍子株式会社 | 粘弾性の測定方法および測定装置 |
US7111500B2 (en) | 2002-12-26 | 2006-09-26 | Ulvac Inc. | Analysis method using piezoelectric resonator |
SG110153A1 (en) * | 2003-09-22 | 2005-04-28 | Agency Science Tech & Res | Device and method of detecting mutations and polymorphisms in dna |
US7398685B2 (en) * | 2004-06-11 | 2008-07-15 | Ulvac, Inc. | Measuring method using surface acoustic wave device, and surface acoustic wave device and biosensor device |
WO2007040566A2 (en) * | 2004-11-23 | 2007-04-12 | Drexel University | Method and apparatus for interfacial sensing |
JP5140724B2 (ja) * | 2008-05-14 | 2013-02-13 | 株式会社アルバック | 水晶振動子及びこれを使用した測定方法 |
CN102782473B (zh) | 2010-03-16 | 2014-07-02 | 株式会社爱发科 | 粘弹性的测定方法以及粘弹性的测定装置 |
US9360409B2 (en) * | 2010-10-20 | 2016-06-07 | Ulvac, Inc. | Method for measuring viscoelastic modulus of substance, and apparatus for measuring viscoelastic modulus of substance |
-
2011
- 2011-03-14 CN CN201180011669.5A patent/CN102782473B/zh active Active
- 2011-03-14 WO PCT/JP2011/001456 patent/WO2011114684A1/ja active Application Filing
- 2011-03-14 KR KR1020127021835A patent/KR101440203B1/ko active IP Right Grant
- 2011-03-14 JP JP2012505496A patent/JP5379909B2/ja active Active
- 2011-03-14 US US13/634,584 patent/US9146187B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004325257A (ja) * | 2003-04-24 | 2004-11-18 | Ulvac Japan Ltd | 振動子を用いた分析方法 |
WO2007004376A1 (ja) * | 2005-06-30 | 2007-01-11 | Ulvac, Inc. | 水晶振動子を用いた測定方法及び測定装置 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101440203B1 (ko) | 2010-03-16 | 2014-09-12 | 가부시키가이샤 알박 | 점탄성 측정방법 및 점탄성 측정장치 |
WO2016031138A1 (ja) * | 2014-08-26 | 2016-03-03 | 株式会社アルバック | 膜厚モニタおよび膜厚測定方法 |
JPWO2016031138A1 (ja) * | 2014-08-26 | 2017-04-27 | 株式会社アルバック | 膜厚モニタおよび膜厚測定方法 |
JP2016223867A (ja) * | 2015-05-29 | 2016-12-28 | 東北電子産業株式会社 | 粘弾性特性の測定方法および測定装置 |
Also Published As
Publication number | Publication date |
---|---|
KR20120123452A (ko) | 2012-11-08 |
US20130046487A1 (en) | 2013-02-21 |
CN102782473B (zh) | 2014-07-02 |
KR101440203B1 (ko) | 2014-09-12 |
JPWO2011114684A1 (ja) | 2013-06-27 |
JP5379909B2 (ja) | 2013-12-25 |
CN102782473A (zh) | 2012-11-14 |
US9146187B2 (en) | 2015-09-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4669749B2 (ja) | 水晶振動子を用いた測定方法及び測定装置 | |
TWI493192B (zh) | Determination of viscoelastic modulus of matter and determination of viscoelastic modulus of matter | |
JP5140724B2 (ja) | 水晶振動子及びこれを使用した測定方法 | |
JP2007010519A5 (ja) | ||
JP5379909B2 (ja) | 粘弾性の測定方法及び粘弾性の測定装置 | |
EP1434047A3 (en) | Analysis method using piezoelectric resonator | |
JP4083621B2 (ja) | 振動子を用いた分析方法 | |
JP4387896B2 (ja) | Qcmセンサおよびqcmセンサによる測定方法 | |
Zainuddin et al. | Verification of quartz crystal microbalance array using vector network analyzer and OpenQCM | |
US7331232B2 (en) | Measurement method and biosensor apparatus using resonator | |
JP4009221B2 (ja) | 振動子を用いた分析方法 | |
JP4755965B2 (ja) | 水晶振動子を使用した液状物の撹拌方法 | |
JP4437022B2 (ja) | 生化学、医療及び食品分野における化学反応の追跡や状態分析等に使用される振動子を使用した測定方法及びバイオセンサー装置 | |
Meng et al. | A liquid density sensor based on longitudinal wave effect of a piezoelectric quartz crystal in liquid phase | |
JP3911191B2 (ja) | 分析方法 | |
JP5066404B2 (ja) | バイオセンサを使用した物性の測定方法 | |
JP5762133B2 (ja) | 圧電素子を用いた物質の吸着量又は解離量の計測方法 | |
JP2003315234A (ja) | 分析セル、振動子製造方法 | |
JP2006300742A (ja) | 発振周波数調整方式を利用した化学物質検出装置 | |
Sugita et al. | 1Pb-30 Biosensor using an acoustic wave manipulator for micro droplet | |
Han et al. | Notice of Retraction: Determination of Quartz Crystal Resonant Frequency by a Novel Multi-Sinusoidal-Signals Approach |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201180011669.5 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11755877 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012505496 Country of ref document: JP |
|
ENP | Entry into the national phase |
Ref document number: 20127021835 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13634584 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 11755877 Country of ref document: EP Kind code of ref document: A1 |