Question

In: Mechanical Engineering

Explain with schematics the two-photon polymerization technique.What is its advantage over stereolithography.

Explain with schematics the two-photon polymerization technique.What is its advantage over stereolithography.

Solutions

Expert Solution

Two-photon polymerization (2PP) is a technique based on the two photon absorbtion (TPA) method which deals with laser radiation in photosensitive polymers. The 2PP uses this method to do direct laser writing and is widely compared with stereolithography. In 2PP method the non linear interactions between materials and laser radiation through TPA is used for working. 2PP can be initiated by using near infrared laser pulses with small amount of UV sensitive material and tightly focusing femtosecond laser pulses. Here laser light mostly is used to focus onto the top of the sample material without interaction at bottom. Femtosecond lasers are used due to their very high peak intensities and moderate average laser power and they also favour TPA. The material is polymerized by moving the laser focus along the trace and by fabricating an polymeric 3D pattern.

The advantage of 2PP over sterolithography is the ability to scan wth high speed and also it benefits from the high resolution present.


Related Solutions

4. Explain with schematics the two-photon polymerization technique. What is its advantage over stereo lithography?
4. Explain with schematics the two-photon polymerization technique. What is its advantage over stereo lithography?
What is the advantage of RRSP over TFSA? What is the advantage of TFSA over RRSP?...
What is the advantage of RRSP over TFSA? What is the advantage of TFSA over RRSP? What is the advantage of each (RRSP and TFSA) over a regular taxable investment account?
1. a) Given the two Verilog code segments, derive the schematics for the logic that will...
1. a) Given the two Verilog code segments, derive the schematics for the logic that will be synthesized from these blocks. BLOCK 1 input Y; reg A, B; always @(posedge clk) begin A = Y; B = A; end BLOCK 2 input Y; reg A, B; always @(posedge clk) begin A <= Y; B <= A; end b) Define setup time by using timing diagrams. Explain what would happen if any one of these timing requirements are violated. c) Describe...
(T/F) Two companies may share competitive advantage over the other.
(T/F) Two companies may share competitive advantage over the other.
1. To use a company's resources and distinctive competencies to gain a competitive advantage over its...
1. To use a company's resources and distinctive competencies to gain a competitive advantage over its rival in a market or industry, a ____ strategy is the plan of action that strategic managers could adopt. a. stakeholder-level b. business-level c. customer-level d. product-level 2. The process by which companies increase or decrease product prices to convey their competitive intention to other companies and so influence the way they price their products is called a. price signaling b. price cutting c....
Give an example of a company that has competitive advantage over its rivals through a differentiation...
Give an example of a company that has competitive advantage over its rivals through a differentiation strategy. Describe how the company achieves their competitive advantage through differentiation.
In a two-country, two-product world, the statement "Japan enjoys a comparative advantage over France in autos...
In a two-country, two-product world, the statement "Japan enjoys a comparative advantage over France in autos relative to ships" is equivalent to A) France having a comparative advantage over Japan in ships. B) France having a comparative disadvantage compared to Japan in autos and ships. C) Japan having a comparative advantage over France in autos and ships. D) France having no comparative advantage over Japan. E) France should produce autos.
Define quantum efficiency as it applies to photon detectors and describe two instances of photon detectors...
Define quantum efficiency as it applies to photon detectors and describe two instances of photon detectors where the term "quantum efficiency" is a relevant and important property.
What is the big advantage of public relations over the other aspects of promotion? Briefly explain.
  List the two major goals of advertising.  What is the big advantage of public relations over the other aspects of promotion? Briefly explain.  What is the big disadvantage of public relations versus the other aspects of promotion? Briefly explain.  Why does sex not sell well when used in advertising? 
5) How can the concept of comparative advantage be used to explain the significant increase over...
5) How can the concept of comparative advantage be used to explain the significant increase over time in the percentage of successful field goal attempts in the NFL?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT