Assignment #1 Individual marks are enumerated in parentheses at the end of every question. Answer in 1‐2 lines 1. Define BioMEMS. [1] 2. What is size range of a bacterial cell? [1] 3. Do an online search on microneedles and write two potential uses of the same in medicine. Write 2‐3 lines describing the usage and the methodlogy of use.[2] 4. Water flows through a channel with a cross‐section illustrated in figure 1 at 6.8ml/min. Find out whether the flow is turbulent or laminar. [4] Hint: The length scale “L” in Reynold’s number [Re= ρvL/μ] is also the Hydraulic diameter given as the ratio of the area and the perimeter [A/P]. ρwater at 25 deg. C = 997.13 kg/m3, μ water at 25 deg. C = .000891 kg/ m.sec. 5. What is the difference between bulk micromachining and surface micromachining?[1] 6. Draw and explain schematically what Biosensors are?[2] 7. Explain in few words how nose can be modeled as a biosensor?[2] 8. Name the compound which produces transduction in our eyes. Explain what does it transducer and the methodology of transduction process.[2] 9. What are the five different methods of immobilization of the recognition agent on the surface of a sensor?[2] 10. What areLab‐On‐Chip devices? Mention 1‐2 lines on why they are important?[2] 11. What is nano‐biology? Give an example of a MEMS tool which can be used for nanobiology.[2] 12. Draw the fabrication flowchart for a micro‐cantilever and explain briefly how you can realize these?.[2] 13. Explain the principle of working of a MEMS based accelerometers and Digital Microdevices. (DMD).[2] 14. Give a fabrication flowchart of micro‐contact printing, replication and molding and Microcapillarymolding. Mention the various steps in 1‐2 lines each. [2] 15. Explain Dip‐Pen‐Lithography.[1] 16. Calculate the potential of the following electrochemical cells. ø= 200 microns (a) Zn\Zn+2|| Cu+2\Cu (b) Pt\Fe+2 \Fe+3|| Cu+2\Cu (c) Na\Na+1|| Cu+2\Cu (d) Pt\H2\H+1|| Cu+2\Cu (e) Cd\Cd+2|| Ag+1\Ag (f) Pb\Pb+2|| Ag+1\Ag [4] 17. A Galvanic cell consists of a SHE electrode and a rod of Cadmium in solution of Cadmium ions at 298K. If it gives a measured EMF of ‐0.44V find out the concentration of Cadmium ions. [3] 18. Describe briefly an ion selective electrode. Mention about the various types of Ion selective electrodes and 1‐ 2 lines as to how they can be realized. [2] 19. Describe briefly the direct measurement method, standard addition method and the gran plot (please describe the mathematics involved). [4]
Assignment #1 Individual marks are enumerated in parentheses at
the end of every question.
Answer in 12 lines 1. Define BioMEMS. [1] 2. What is size range
of a bacterial cell? [1] 3. Do an online search on microneedles and
write two potential uses of the same in medicine. Write 23 lines
describing the usage and the methodlogy of use.[2] 4. Water flows
through a channel with a crosssection illustrated in figure 1 at
6.8ml/min. Find out whether the flow is turbulent or laminar. [4]
Hint: The length scale L in Reynolds number [Re= vL/] is also the
Hydraulic diameter given as the ratio of the area and the perimeter
[A/P]. water at 25 deg. C = 997.13 kg/m3, water at 25 deg. C =
.000891 kg/ m.sec.
5. What is the difference between bulk micromachining and
surface micromachining?[1]
6. Draw and explain schematically what Biosensors are?[2] 7.
Explain in few words how nose can be modeled as a biosensor?[2] 8.
Name the compound which produces transduction in our eyes. Explain
what does it transducer and the methodology of transduction
process.[2] 9. What are the five different methods of
immobilization of the recognition agent on the surface of a
sensor?[2] 10. What areLabOnChip devices? Mention 12 lines on why
they are important?[2] 11. What is nanobiology? Give an example of
a MEMS tool which can be used for nanobiology.[2] 12. Draw the
fabrication flowchart for a microcantilever and explain briefly how
you can realize these?.[2] 13. Explain the principle of working of
a MEMS based accelerometers and Digital Microdevices. (DMD).[2] 14.
Give a fabrication flowchart of microcontact printing, replication
and molding and Microcapillarymolding. Mention the various steps in
12 lines each. [2] 15. Explain DipPenLithography.[1] 16. Calculate
the potential of the following electrochemical cells. = 200
microns
(a) Zn\Zn+2|| Cu+2\Cu (b) Pt\Fe+2 \Fe+3|| Cu+2\Cu (c) Na\Na+1||
Cu+2\Cu (d) Pt\H2\H+1|| Cu+2\Cu (e) Cd\Cd+2|| Ag+1\Ag (f) Pb\Pb+2||
Ag+1\Ag [4] 17. A Galvanic cell consists of a SHE electrode and a
rod of Cadmium in solution of Cadmium ions at 298K. If it gives a
measured EMF of 0.44V find out the concentration of Cadmium ions.
[3] 18. Describe briefly an ion selective electrode. Mention about
the various types of Ion selective electrodes and 1 2 lines as to
how they can be realized. [2] 19. Describe briefly the direct
measurement method, standard addition method and the gran plot
(please describe the mathematics involved). [4]
20. Derive the following coordinate transformation from
Cartesian to Rotational. [9]
