Carbonat de Calciu CaCO3

proprietăţile fizice ale materialelor depind de ordonarea moleculelor

CRETA

COCHILIE

= MOALE

=TARE & FRUMOASĂ

(molecule de CaCO 3 aliniate întâmplător )

(molecule de CaCO3

bine ordonate)

MARMURA = MAI TARE

(molecule de CaCO3

mai bine ordonate)

COCS = MOALE

= TARE

= EXTREM DE TARE ŞI DURABIL

DIAMANT

GRAFIT

Duritatea este măsurată pe scara lui Moch de la 1 la10. Prin scrijeire eementul mai dur poate lăsa urme pe cel mai moale.

60FullereneC 1985

N NNNNNNNNN NN NNNNNN 1991

Robert F. Curl, Harold W. Kroto and Richard E. Smalley

Sumio Iijima

Premiul Nobel pt. chimie 1996

How does a carbon Nanotube switch work?

Carbon Nanotubes “Understanding Nanotechnology” Scientific American, Warner Books.

Drexler www.imm.org

Don’t forget the NANOTUBES and BUCKYBALLS !!

Electronic Bandgap is determined by the Diameter of the tube.

Why is diamond transparent andGraphite black/grey? Think of the way the atoms are Arranged- this changes theBandgap of the material.

Space Elevator

climber

H2

molecule Low molecular attraction

: almost free movement

: high kinetic energy

: storage problem

WALL OF NANOTUBE H2

molecule

NANOTUBE AS HYDROGEN GAS STORAGE

NANOTUBE AS BIOSENSOR

Change of electrical property

Nanotube

Foreign molecule

(Electrical property)

FUTURE APPLICATIONS

NANOTUBE

FULLERENE = CARRIER

(DELIVERY SYSTEM)

AS DRUG DELIVERY SYSTEM

- WAR HEAD (DRUG MOLECULE)

GUIDING DEVICE (REMOTE CONTROLLED)