Afm - ndma
Nano body facies differ?What is near the interface or alternate with viscoelastic?How the load transfer and change with the temperature?For the AFM, quantified nanoscale viscoelasticity measurement and answer these questions, has been a long and difficult to achieve.
Although interaction on the surface of the track in the AFM tip - for samples of stiffness and viscous resistance provides ample opportunity to traditional methods of AFM has been measured in the nonlinear, not related to frequency of use, not considering the adhesion effect, and then need to "calibration" results.AFM - nDMA ™ to eliminate all of these problems, for the first time and provides body DMA and nano indentation DMA directly the result of the match.
Atomic force microscope for the first time for phase dynamic mechanics analysis under the frequency and loss tangent modulus measured accurately
AFM - nDMA use brook a number of proprietary technology, including dual channel demodulation, phase-shift correction and normalization of reference frequency, can be in 0.1 Hz and 20 KHZ rheological measurement frequency range energy storage modulus, loss modulus and loss tangent value, frequency range and phase DMA and nano indentation DMA match directly.
Through contact with the nanometer amplitude, AFM - nDMA uninteresting facts in the linear area work under the strain.This contrasts with traditional AFM methods, the traditional methods of AFM in each cycle will probe out from the surface, this is a phase shift affected by the adhesion force change highly nonlinear process.
In addition, AFM - nDMA embedded measuring force - displacement curve, the brook proprietary low load trigger technology, avoid transverse force, and implement a repeatable results and high spatial resolution.
Using quantitative load and adhesion force to the absolute calibration - without reference to the samples
Using calibration probe, its integration into the work process, precise measurement method and the essence, realize a simple calibration data path: read the qr code, confirm the number of the probe, and then measured.Without any reference samples.All the parameters are known, and through "calibration" again.In known and controlled under the pre load of embedded measuring force curve, even of automatic measurement and adhesion effect taken into consideration in the analysis.No reference sample measurement process not only made more quickly and easily, also avoid the pollution of needlepoint limitation and risk.
With the highest AFM resolution minimum nanoscale domain of the polymer solution
AFM - nDMA andPeakForce QNM - HAandFASTForce VolumeIntegration into the MiroVIEW together, in order to fully represent the smallest nanoscale domain structures.As hundreds of article emphasizes PeakForce QNM provides the highest resolution in the polymer.PeakForce QNM image can identify the molecular structure of polymer, can even identify organic crystal, in the air, modulus, adhesion strength and other properties of individual molecules in the images of the defects.
AFM - the addition of nDMA in two ways to such information.First of all, by offering more energy storage modulus, loss modulus and loss tangent and 15 other nano mechanics data types of imaging, AFM - nDMA greatly expanded is used to identify the structure of the target domain available imaging characteristics.Second, AFM - nDMA allow in the 0.1 Hz and 20 KHZ frequency range for multi-frequency point measurement, thus to target a comprehensive viscoelastic characterization of nanoscale domain structures.
Polymer standard curve for the first time based on AFM results match with body
AFM results of nDMA DMA matching with body - not only on one frequency, and in the whole rheological frequency and temperature range.The accuracy of data allows for nanoscale domain for comprehensive analysis of the viscoelastic structure, including the time-temperature superposition (or standard curve) of building, the frequency dependence of the phase change temperature and activation energy of analysis.
AFM -- nDMA is very accurate.In the example, to generate the fluorinated ethylene propylene (FEP) of standard curve, the frequency across 25 orders of magnitude.Activation energy generated by matching with body measurement results, the error is within 1%.AFM - nDMA is a comprehensive solution.Its software includes creating the function of the standard curve and the analysis of the WLF and Arrhenius.Using AFM - nDMA, AFM for the first time with the real quantitative nanoscale viscoelastic functions.
Found that traditional AFM method cannot reveal the nano mechanical effects
In a heterogeneous sample set is yuan through Tg showed severe viscoelastic effect, effect of load transfer of the interface.AFM - not only reveals the nDMA these effects, but also to realize the quantitative for the first time, to answer the above questions: nano body facies differ?What is near the interface or alternate with viscoelastic?As a function of temperature, will affect load transfer?
The following AFM adopted AFM - nDMA brooke:
