The mechanical properties of the rubber elastic polymer polydimethylsiloxane for sensor applications
read more
Citations
Fabrication of field-effect transistors and functional nanogenerators using hydrothermally grown ZnO nanowires
Carbon nanotubes dispersed polymer nanocomposites: mechanical, electrical, thermal properties and surface morphology
In situ characterization of PDMS in SOI-MEMS
Surface-Treated Poly(dimethylsiloxane) as a Gate Dielectric in Solution-Processed Organic Field-Effect Transistors.
Thickness dependence of the elastic modulus of tris(8-hydroxyquinolinato)aluminium
References
Polydimethylsiloxane as an elastic material applied in a capacitive accelerometer
Flexible polysiloxane Interconnection Between Two Substrates For Microsystem Assembly
Nitrate And Bicarbonate Selective Chemfets
Related Papers (5)
Monolithic microfabricated valves and pumps by multilayer soft lithography
Frequently Asked Questions (15)
Q2. What forces are responsible for adhesion between a cured elastomer and?
The surface forces for elastomers which are responsible for adhesion between a cured elastomer and a rigid smooth surface can arise from (1) van der Waals forces, (2) electrostatic forces and (3) hydrogen bonds.
Q3. What are some of the advantages of PDMS?
Some physical and chemical attributes of PDMS are, compared to other polymers [6], a low glass transition temperature (Tg ≈ −125 ◦C [6]), a unique flexibility (the shear modulus G may vary between 100 kPa and 3 MPa [6]), very low loss tangent (tan δ 0.001), small temperature variations of the physical constants (except for the thermal expansivity, α ≈ 20 × 10−5 K−1 [7]), high dielectric strength (∼14 V µm−1 [7]), high gas permeability, high compressibility, usability over a wide†
Q4. What is the purpose of this paper?
Polydimethylsiloxane (PDMS) is a commercially available clean room compatible type of silicone rubber with a wide range of applications.
Q5. What was the purpose of the PDMS?
After spinning, the PDMS layer was covered with Mylar foil of 23 µm thickness to avoid the presence of oxygen near the PDMS which would disable the cross linking process to occur and to prevent the PDMS sticking to the mask.
Q6. What is the shear modulus of PDMS?
The shear modulus is independent of the applied frequency but linearly dependent on the temperature with a slope of 1.1 kPa ◦C−1.
Q7. What is the torsional force of the PDMS?
The lower disc applies a certain torque with a certain frequency to the structure, a torsional force measuring device is connected to the upper disc and this measures the resulting movement of the polysiloxane due to the applied force.
Q8. What is the average roughness of PDMS?
due to the low surface energy and high flexibility of PDMS a good adhesion is obtained between cured PDMS and polished surfaces with an average roughness of less than 0.33 µm.
Q9. What are the possible applications of PDMS?
Other possible applications are its use as the top elastomer on a tactile sensor such as that described in [4] without influencing the sensitivity of the device and as flexible encapsulation material in order to mechanically and chemically decouple sensors from their environment [5].
Q10. What is the shear modulus of a rubberelastic material?
The more flexible the polymer and the less rough the rigid solid surface on which the cured polymer is put, the better the adhesion: when the average surface roughness is less than 0.33 µm and G ≤ 250 kPa the relative adhesion is higher than 50% [9].
Q11. What is the name of the paper?
Fax: +31-53-4892287. E-mail address: j.c.lotters@el.utwente.nltemperature range (at least from −100 ◦C up to +100 ◦C [8]), low chemical reactivity (except at extremes of pH) and an essentially non-toxic nature.
Q12. What is the shear modulus of a tan versus applied frequency?
A primer like TMSM should be used as the coupling agent between an organic polymer like PDMS and a mineral substrate such as oxidized silicon.
Q13. What was the thickness of the PDMS?
A thick cylindrical polysiloxane structure of height 1.2 mm and radius 8 mm was fabricated on a silicon substrate to measure the shear modulus G.
Q14. What is the chemical composition of PDMS?
The wafers were kept in this mixture for one minute so that the methacryl groups present at the wafer surface became attached to the methacry
Q15. What is the shear modulus of rubberelastic materials?
Figure 3 shows that the shear modulus increases with temperature, which is typical for rubberelastic materials at the ‘rubbery plateau’ [8].