1) Provide a Definition for the word Biomaterials and justify whether the follow

1) Provide a Definition for the word Biomaterials and justify whether the following materials can be
considered biomaterials
Apple peel, intraocular lens, Captain Ahab’s Peg Leg, your brain, visual system with a port connection to
the brain, hip implant.
2) Bragg’s Law is a very important equation that is useful in studying the structure of certain types of materials. Describe the types of materials that Bragg’s Law is appropriate to study and the conditions under which Braggs Law Is satisfied using a sketch. Briefly describe two additional types of information that can be obtained from Bragg’s Law?
3) Please draw a face centered cubic (FCC) unit cell. Calculate the packing factor for an FCC unit cell
Determine how many atoms are in the following unit cells?
a.) Body centered cubic
b.) Face centered cubic
c.) Diamond cubic (see pictures for reference).
d.) One half (1/2) of a face centered cubic cell
e.) 10 face centered cubic unit cells
4)True or false (If statement is false, correct it so that it is true based on a calculation or statement of fact)
a.) There are 7 crystal classes and 14 crystal space groups
b.) A gecko uses H bonding to stick to and climb on molecularly smooth surfaces.
C.) The (111) plane only intersects the Y and Z axes.
d.) The atomic packing factor for a body centered cubic unit cell is 74% and the atomic packing
factor for a face centered cubic unit cell is 68%.
e.) The brilliant colors on butterfly wings and beetle exoskeletons can be explained based onspecial biological dye pigments.