polymers nanocomposites for sensor applications

... (Tg) that were unacceptable for dental applications or resulted in polymers that have high flexibility 2.7.2 Liquid Crystalline Monomers As the search for low-shrinking polymers continue, liquid ... low/non-shrinking nanocomposites based on polyhedral silsesquioxanes (SSQ) for dental applications The objectives of this research were to: (a) Design and develop low/non-shrinking SSQ-based nanocomposites ... carried out for resin-based composite restorations for Class I and II cavities for a period of 3 to 6 years have also shown that secondary and/or recurrent caries were the main reasons for restoration

Ngày tải lên: 14/09/2015, 18:35

... near future For these reasons, it is meaningful to study methodologies for the effective use of such materials for manipulation with an eye to future applications A promising candidate for such ... They could perform -2 -1 0 1 2 5 Hz 4 Hz 3 Hz 2 Hz Amplitude of very-low frequency vibration [V] (82.2) (97.7) (114.9) (129.0) (*) : Average force for 5 Hz [gf] Figure 9.12 Pressure force vs driving ... is possible for the other elements to compensate for them This signifies insensitivity to environmental fluctuation In human bodies, for example, excretion of alien substances is performed by a

Ngày tải lên: 10/08/2014, 02:20

... and only a pure compressive force induced by the Maxwell stress should be used for actuation For the first step of the nonprestrained actuator design, the amount of deformation of the dielectric ... 12 2 / Frame Dielectric elastomer a Compression force Expansion force Reaction force (a) initial state (b) actuated state b=a(1+ Ga h a (c) deformed state Figure 3.27 Basic operating concept ... only half of the vertical strain For that reason, either a material with a higher dielectric constant or very high input voltage is required for a better actuator performance However, neither seems

Ngày tải lên: 10/08/2014, 02:20

... provide a reference for the selection of materials for applications or a guideline for developing new ferroelectric and piezoelectric polymeric materials 4.5 Remarks Electroactive polymers including ... a few example applications are given, in the hope that this information will guide and stimulate further applications The introduction provides a general overview, following the format of a recent ... including ferroelectric and piezoelectric polymers and their applications are still relatively new research fields Due to several advantages of electroactive polymers over electroactive ceramics (light

Ngày tải lên: 10/08/2014, 02:20

... expansion coefficient, but for charge rather than temperature In conducting polymers, the strain to charge ratio is experimentally found to range from 0.3– 5u10-10 m3˜C-1 for polypyrrole and polyaniline ... compensated for is 16 MPa At 20 MPa, the sum of the creep and the elastic deformation reaches 2% after ~ 1 hour, as shown in Figure 5.11 The designer must determine the extent of elastic deformation ... strain polypyrrole [68] Note that unlike muscle, conducting polymers can perform work both under compression and tension, and therefore can generate a further doubling in work per volume where

Ngày tải lên: 10/08/2014, 02:20

... 2V(Measured) s(mm) B A Figure 6.9 Force-displacement relationship of an IPMC actuator ([4]) Thus, the force F for s 0 (region A in Figure 6.9) is the reaction force for the case shown in Figure 6.8a, ... 3.4º, for Wing #1, and 4.68 cm and 9.1º, for Wing #2 The deformed shapes are shown in Figure 6.11b and Figure 6.12b for Wing #1 and #2, respectively Wing #2 is the better design for the flapping ... Onsager relations for the system have the form, p L E p K E L Equations (6.1) and (6.2) couple the electric field, E, as well as the mechanical pressure gradient, ’p, the driving forces for the phenomenon

Ngày tải lên: 10/08/2014, 02:20

... free movement of the floats in forward and backward directions Figure 7.26 Experimental setup for measuring propelling speed We searched for an optimal condition for propulsion by changing the ... directions forward and backward Their bodies, called anguilliform, are slender or long and thin like a ribbon The heights of their bodies are almost constant from head to tail When they move forward, ... Robot 7.10.1 Forward and Backward Propulsions We first investigated the forward and backward propulsions by the snake-like bending motion of the patterned IPMC An experimental system for measuring

Ngày tải lên: 10/08/2014, 02:20

... of force for the left turn on both Although this is not true, comparing the relative differences between the two values obtained, the moment of force for the left turn is larger than that for ... Figure 7.42 Figure 7.42 Moment of force vs propelling speed By fixing V x as zero, the moments of force M = 1.2 × 10í4Nm for the left turn and M = 5.6 × 10í5Nm for the right turn are obtained ... image 7.12.2 Applying Model on Forward and Backward Propulsions We first calculated the propelling force F x by (7.13) using z x,t extracted from the experiments of forward and backward propulsions

Ngày tải lên: 10/08/2014, 02:20

... function of time for a single pulse exposure at r=0 Fig 4.10 Temperature rise calculated for a single pulse shot for 532 nm laser at a Fig 4.11 Temperature decay as a function of time for a single ... showing (A) micro-perforations using Nd:YAG laser (at λ = 355 nm) with uniformed array of micro-size perforations on 1 µm thick PCL film; (B) ‘donut-like’ array of micro-size perforations on 10 µm ... shown to be suitable for membrane tissue engineering applications However, prior treatment of sodium hydroxide solution or plasma was required to provide better affinity for cells Alternative

Ngày tải lên: 14/09/2015, 08:36

... and dwelled for 3 min) with nanograin precursor Theyfound that the electronic conductivity is negligible in the studied nanocomposites withNanocomposites for “nano green energy” applications ... had been installed for resident application The ENE-FARM system is a combined heat and power system; the total system efficiency couldNanocomposites for “nano green energy” applications 423 Trang ... ionic conductivity of STO, YSZ, and SDC thin films areincluded for comparison (Yang et al., 2015) Nanocomposites for “nano green energy” applications 429 Trang 10such as CO2 separation, electrochemical

Ngày tải lên: 04/01/2018, 22:56

... Trang 1Polymers for Electronic ApplicationsEdited by Juey H Lai Trang 2Polymers for Electronic Applications Boca Raton, Florida Boca Raton London ... primary applications of polymers in semiconductor device manu-facturing: polymers as resist materials for integrated circuit fabrication, polyimides as electron-ics packaging materials, and polymers ... fabrication of polymers into a particular desired form, e.g., a large area thin film with controlled thickness The objective of this book is to review and discuss some important applications of polymers

Ngày tải lên: 04/03/2019, 13:18

... 39 4 Applications of Wireless Sensor Networks in Logistics 40 4.1 WSNs and applications 40 4.1.1 Sensor nodes 40 4.1.2 Sensor node operating systems 41 4.1.3 Applications of WSNs 41 4.1.3.1 ... 51, 88 Supplied voltage for a sensor node Vinternal Battery 88 Internal voltage of a sensor node Vmax, Vmin Battery 88 Maximum and minimum voltage of power supply for a sensor node wi, j LWCL ... logistischen Objekte (mit Sensoren ausgestattet) fortschrittlicher in Bezug auf Informationskommunikation und Datenverarbeitung machen Der verteilte Steuerungsdienst in jedem Sensorknoten erlaubt

Ngày tải lên: 31/01/2021, 23:30

... spectroscopy of porphyrin and phthalocyanine analogues: rational design of photosensitizers for PDT and NIR region sensor applications John MACK∗, Martijn WILDERVANCK, Tebello NYOKONG Department of Chemistry, ... utility of fused-ring-expanded phthalocyanine and aza-BODIPY analogues for photodynamic therapy and near infrared region sensor applications is assessed on this basis Recent attempts to prepare fused-ring-expanded ... properties The potential utility of fused-ring-expanded Pc and aza-BODIPY analogues for photodynamic therapy and NIR sensor applications is also assessed on this basis 2 Results and discussion symmetric

Ngày tải lên: 12/01/2022, 23:22

... (2X1) Measured Disturbance MPC Replacement for PID with Feedforward Trang 15©2006 Fisher-Rosemount Systems, Inc.MPC Replacement for PID with Feedforward Trang 16©2006 Fisher-Rosemount Systems, ... Inc.Model Predictive Control for small applications Trang 2©2006 Fisher-Rosemount Systems, Inc.Advantages of Model Predictive Control – Automatically compensate for process interaction, measurable ... begins to form Æ Usually there must be a rather high temperature difference between the heating and boiling sides Æ Extensively used for food, pharmaceutical, and many industrial applications

Ngày tải lên: 01/10/2013, 13:49

... information on technology, structure, molecular dynamics and properties of thermoset nanocomposites, suitable for various engineering applications ix Thermoset Nanocomposites for Engineering Applications ... alternative for fibre-reinforced composites [58] Therefore, an ongoing trend is to combine the advantages of polymer nanocomposites and fibre-reinforced polymers to produce new reinforced plastics ... Preface Chapter Performance of Thermoset Nanocomposites - considers specific properties of thermoset nanocomposites of interests for engineering applications Experimental results for mechanical properties,...

Ngày tải lên: 04/06/2014, 15:17

... resulted in the formation of non-centrosymmetric nanostructures Preferential formation of trimers and higher oligomers was observed for ZnS and dimers or isolated particles for CdS and HgS nanocomposites ... research shows the great potential for magnetic-fluorescent nanocomposites as reagents for cell labelling, bioseparation and related applications Fluorescent-magnetic nanocomposites can be used to ... streptavidin-immobilised fluorescent-magnetic nanocomposites; fluorescent microscopy images of nanocomposites excited with a 980 nm laser; (a) image of chain-like structures formed by nanocomposites in the presence...

Ngày tải lên: 21/06/2014, 22:20

... SYNTHESIS OF WATER SOLUBLE SUPERPARAMAGNETIC NANOCOMPOSITES FOR BIOMEDICAL APPLICATIONS Erwin (B Eng., HONS.), NUS A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY (PH.D) DEPARTMENT ... hydrophobic nanoparticles system onto the aqueous phase, forming water-soluble nanocomposites For each approach, the synthesized hydrophilic nanocomposites colloidal stability (pH- or time-dependent) ... [66-70] Based on the aforementioned applications, magnetic nanoparticles can be functionally exploited for the combined cancer diagnostic and therapeutic (theranostics) applications [71-72] Ideally,...

Ngày tải lên: 09/09/2015, 11:31

... Dental Nanocomposites Journal of Biomedical Research Part B Applied Biomaterials (Submitted for publication) Soh MS, AUJ Yap and A Sellinger, Silsesquioxanes-based Nanocomposites as Copolymers for ... developed into experimental nanocomposites (S1 – S4) by reinforcing with 63 wt% of commercial fillers The experimental nanocomposites (S1 – S4) were then vi characterized for their physico-mechanical ... Figure 5.22 SEC chromatogram for compound A 84 Figure 5.23 SEC chromatogram for compound B 84 Figure 5.24 SEC chromatogram for compound C 85 Figure 5.25 SEC chromatogram for compound D 85 Figure...

Ngày tải lên: 14/09/2015, 18:35

... the oscillation waveform when C3 = 100 pF and C4 = 47 pF Note that the voltage limit circuit adds distortion to the waveform of amplifier A2 In most sensor applications, waveform distortion is ... specification of the amplifiers is critical for oscillators that are used as sine wave references However, the shape of the waveform is not critical in most sensor applications because only the frequency ... consists of forming a coefficient array from N(s) Next, the procedure substitutes s = jωο for s, with the summation of the row set to zero If the row equation produces a non-trivial solution for ωο,...

Ngày tải lên: 11/01/2016, 14:30

... of nonelectrically deformable polymers are chemically activated polymers, shape-memory polymers, inflatable structures, light-activated polymers, magnetically activated polymers, and thermally ... developed for wide range of applications and for hydrodynamic propulsion Various swimming and flapping applications have been also been researched [36] 1.3.2.3 Conducting Polymers Conducting polymers ... special advantage for medical actuator applications such as catheters or for microactuators [57] Conducting polymers are considered a suitable material as a matrix for enzymes in biosensors, which...

Ngày tải lên: 14/03/2014, 14:20