KATIHAL FİZİĞİ MNT-510 Nurdan Demirci Sankır
KATILARIN KRİSTAL YAPISI DERS DESTEK
TOBB Ekonomi ve Teknoloji Üniversitesi
Katıların Kristal Yapısı
Ref. http://www.thefossilgeode.com/ivey_farm_10_16_04.htm
Ref. http://www.green-planet-solar-energy.com/solar-energy-cell-crystals.html
Ref. http://www.steelguru.com/article/details/MjU=/Solid_State_Structure.html
TOBB Ekonomi ve Teknoloji Üniversitesi
7 Kristal sistemi ve 14-Bravais Örgü
Ref. http://www.answers.com/topic/crystallography
TOBB Ekonomi ve Teknoloji Üniversitesi Ref. http://www.fen.bilkent.edu.tr/~gulseren/phys545/pdf/symmetry.pdf
TOBB Ekonomi ve Teknoloji Üniversitesi
Yansıma
Ref. http://www.reciprocalnet.org/edumodules/symmetry/operations/reflection.html
Dönme
TOBB Ekonomi ve Teknoloji Üniversitesi
1-Fold Rotation An object that requires rotation of a full 360o in order to restore it to its original appearance has no rotational symmetry. Since it repeats itself 1 time every 360o it is said to have a 1-fold axis of rotational symmetry.
Ref. http://www.tulane.edu/~sanelson/eens211/introsymmetry.htm
2-Fold Rotation If an object appears identical after a rotation of 180o, that is twice in a 360o rotation, then it is said to have a 2-fold rotation axis (360/180 = 2). Note that in these examples the axes we are referring to are imaginary lines that extend toward you perpendicular to the page or blackboard. A filled oval shape represents the point where the 2-fold rotation axis intersects the page.
TOBB Ekonomi ve Teknoloji Üniversitesi
3-Fold Rotation Objects that repeat themselves upon rotation of 120o are said to have a 3-fold axis of rotational symmetry (360/120 =3), and they will repeat 3 times in a 360o rotation. A filled triangle is used to symbolize the location of 3-fold rotation axis.
4-Fold Rotation If an object repeats itself after 90o of rotation, it will repeat 4 times in a 360o rotation, as illustrated previously. A filled square is used to symbolize the location of 4-fold axis of rotational symmetry.
Ref. http://www.tulane.edu/~sanelson/eens211/introsymmetry.htm
TOBB Ekonomi ve Teknoloji Üniversitesi
6-Fold Rotation If rotation of 60o about an axis causes the object to repeat itself, then it has 6-fold axis of rotational symmetry (360/60=6). A filled hexagon is used as the symbol for a 6-fold rotation axis.
Rotoinversion Combinations of rotation with a center of symmetry perform the symmetry operation of rotoinversion. Objects that have rotoinversion symmetry have an element of symmetry called a rotoinversion axis.
Ref. http://www.tulane.edu/~sanelson/eens211/introsymmetry.htm
TOBB Ekonomi ve Teknoloji Üniversitesi
Bazı simetri veya geometriler için uzayın boşluk kalmayacak şekilde doldurulması mümkün değildir
TOBB Ekonomi ve Teknoloji Üniversitesi
Kübik yapının dönme simetri eksenleri
TOBB Ekonomi ve Teknoloji Üniversitesi
Sodyum Klorür Kristal Yapısı
TOBB Ekonomi ve Teknoloji Üniversitesi
Sezyum Klorür Krsital Yapısı
TOBB Ekonomi ve Teknoloji Üniversitesi
Hekzagonal Sıkı Paket
TOBB Ekonomi ve Teknoloji Üniversitesi
Close Packing of Spheres
(a) Close packing of a single layer of equal-sized spheres. (b) In the hexagonal close-packed structure the atoms in the third layer lie directly over those in the first layer. The order of layers is ABAB. (c) In the cubic close-packed structure the atoms in the third layer are not over those in the first layer. Instead, they are offset a bit, and it is the fourth layer that lies directly over the first. Thus, the order of layers is ABCA
Ref. http://wps.prenhall.com/wps/media/objects/3311/3391416/blb1107.html
TOBB Ekonomi ve Teknoloji Üniversitesi
Elmas ve Çinko Sülfit Yapılar
TOBB Ekonomi ve Teknoloji Üniversitesi
Miller İndisleri