# Jar Design A320 V2 Crack WORK ⏩

November 22, 2022No Comments

## Jar Design A320 V2 Crack WORK ⏩

Jar Design A320 V2 Crack

the sensitivity of the electrode-bridge-design to the substrate temperature can influence crack formation. if the electrode-bridge-design is too stiff or has a too narrow notch radius, it may fail at elevated substrate temperatures due to thermal expansion, which would be similar to stress-relief due to heat in bulk materials. according to the simulations, if the electrode-bridge-design is too stiff, there exists a minimum temperature at which the electrode-bridge will fail. this can be seen in figure 8. in order to make electrode-bridges robust against thermal expansion, it is possible to increase the notch radius and/or decrease the elastic modulus. these two parameters will be studied in the following figures to examine their effect on the electrode-bridge design.

we have fabricated a variety of carbon-based electrodes including electrodes with gap widths from about 2 to 50 nm. the yield strength of the electrodes is shown in figure 9. we found that the yield strength decreases by about 5% for each 1 nm reduction in gap-width. as the gap-width decreases below 10 nm, the yield strength starts to decrease, as a consequence of mechanical instability of the electrode-bridge. this is in line with earlier reports of a decrease in the yield strength of carbon nanotube networks as the diameter of the nanotubes decreases. we found that the yield strength of the electrodes can be designed by choosing a suitable material and using a proper fabrication process. the current approach allows us to choose the geometry of the electrode-bridge-design and the fabrication process to be tailored to suit the desired application. for example, increasing the thickness of the electrode-bridge-design will increase the strength and stiffness of the electrode-bridge-design, but it will also make the electrode-bridge-design thicker and harder to fabricate.

A design should be chosen such that the notch effect is smaller than the constriction effect: max>r/W(2+1/4) (red area). To reach this goal, either the electrode-bridge width W should be made smaller than the electrode radius r by a factor of about 1.25, or the electrode radius should be reduced to the order of the electrode-bridge width, r/W2r/W(2+1/4) (red area). To achieve this goal, the electrode-bridge width W should be made smaller than the electrode radius r by a factor of about 1.2 (black area). This means that the design will work regardless of the amount of notch indentation, thus avoiding any need to compromise between crack formation and fabrication yield.
As a last remark on the notched electrode-bridge, we notice that the crack propagates very quickly when the notch effect is larger than the constriction effect (green area), while the crack takes longer to propagate when the constriction effect is larger than the notch effect (blue area). This can be clearly observed in Figure 2b, where the crack formation times cc(t) are plotted as the inverse of the change in area Definition The crack formation times c(t), or alternatively the change in area A(t) at time t, is expressed in units of seconds (s). For notched electrode-bridges the normalized crack formation time by normalized crack propagation distance (c/W) (see Methods section on Normalization of Crack Formation Times) is plotted in Figure 4, where the left axis represents the relative crack formation time normalized by the normalized crack propagation distance, and the right axis the relative crack formation time normalized by the average crack formation time without notches.
5ec8ef588b