iplan to begin my ph. d. degree study in your biophysics program in the fall term of 1995 and wish to obtain the degree within five years or so .
biophysics develops fast with the fruits of modern physics and chemistry. there is a wide range of fascinating questions in understanding life systems. during these years‘ study at tsinghua university, i constantly tried to improve myself through independent reading. this kept me well informed of the latest development in biophysics which attracts me a lot.
e. schrodinger‘s famous work "what is life" let me think a lot of questions in biophysics. up to now, physicist have made great success in studying simple periodic crystals, but for the complex biological structures possess both aperiodicity and order such as dna, there still exist many challenges. why these aperiodic matter can control the life strictly and precisely? why a small amount of nature catalyst-enzyme can be far more efficient than plenty of man-made catalysts? is the growth of life determined by genetic materials or by self-assembly or by both of them? from the book "liquid crystals and biological structures" written by glenn h.brown and jerome j.wolken, i got deeper understanding of biological structures which possess both mobility and long-range structure order, respond to a variety of external stimuli just like the properties of liquid crystals. the striking architecture at the molecular level shows there is a common physical-chemical origin for all life systems. the oriented molecules in liquid crystals furnish an ideal medium for catalytic action, particularly of the complex type needed to account for growth and reproduction. water, especially the weak hydrogen bond plays critical role in all organism. it determines the protein folding, stabilizes the double helix structure of dna. if we substitute deuterium for hydrogen, the biological system may be destroyed.