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  • Q1:(A) Reverse engineer a piece of medical technology. This must include: 1. A brief history of the science leading to its development, and the development of the technology. 2. A careful, physical analysis of how the device works. This must include a schematic or diagram and the math describing the physics. 3. Evaluation of how the device is applied, the impact it has on humanity, and how it could be improved in the future. Citations of strong sources are required DEVICE: Defibrillator for each questionSee Answer
  • Q2:Q1} We often use laser diodes to excite biological samples and observe their fluorescence emission. Figure 1 shows a transfer function (the laser output power P vs the driving current I) of a laser diode, where you can see that a typical laser has three different operation regions (taking the transfer curve at 0oC as an example): i) Sub-threshold: the laser operates below the threshold current, Ith, emitting minimal light. ii) Linear region (this is where the laser usually operates): the driving current is higher than the threshold, the laser shows the best efficiency. iii) Saturation: the driving current is too large, and the efficiency drops again (note the behaviour in this region is not linear, but let’s approximate it with a straight line for simplicity). We also notice that the transfer function is sensitive to the temperature. The threshold current Ith is also a function of the temperature. 1.1 What are the threshold currents of the laser for 25 and 100 oC? (2, 2 marks) 1.2 What are the transfer gains (we also name the transfer gain as ‘sensitivity’ DP/DI) of the laser operating at the linear region, for 0, 25, and 100 oC, respectively? What is your observation (2, 2, 2, 3 marks) 1.3 From Question 1.2, what are the laser diode’s linear dynamic ranges (both I and P) for 0, 25, and 100 oC, respectively? (6 marks) 1.4 Suppose the fluorescence experiments require the laser diode to deliver a modulated laser power between Pmin = 1 mW and Pmax = 6 mW. What is the driving current range for 0, 25, and 100 oC, respectively? (6 marks) Instructions: Plagiarism free Solutions generated from any AI platform is strictly Prohibited Referencing and formatting Style APA Need Typed Solutions only.See Answer
  • Q3:(A) Reverse engineer a piece of medical technology. This must include: 1. A brief history of the science leading to its development, and the development of the technology. 2. A careful, physical analysis of how the device works. This must include a schematic or diagram and the math describing the physics. 3. Evaluation of how the device is applied, the impact it has on humanity, and how it could be improved in the future. Citations of strong sources are required See Answer

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