28.12.2005
РОССИЙСКАЯ АКАДЕМИЯ НАУК

УРАЛЬСКОЕ ОТДЕЛЕНИЕ

ИНСТИТУТ ХИМИИ TBEPДОГО ТЕЛА
   
| | | | |
| | | | | |
 28.12.2005   Карта сайта     Language По-русски По-английски
Новые материалы
Экология
Электротехника и обработка материалов
Медицина
Статистика публикаций


28.12.2005

Scientists Unlock The Mystery Of The Mechanics Of Liquid Crystal Alignment


The alignment of liquid crystals in devices such as lap-top computers and palm pilots makes the displays on these devices readable. For more than 30 years, scientists have worked to understand the exact mechanism responsible for liquid crystal alignment, to no avail – until now. A group of researchers at Kent State University, headed by Dr. Satyendra Kumar, professor of physics, have finally uncovered the mechanisms of liquid crystal alignment.














Related News Stories





New Type Of Liquid Crystal Identified; Holds Promise Of Faster, Lower Priced Liquid Crystal Displays (June 15, 2004) -- A new type of liquid crystal - recently discovered by a research team that includes a Kent State University professor - holds the promise of faster liquid crystal displays at a lower ... full story


Doped Liquid Crystals Allow Real Time Holography (October 22, 2003) -- The addition of buckyballs or carbon nanotubes to nematic liquid crystals changes their properties and makes them low-cost alternatives for holographic and image processing applications, according to ... full story


IBM Scientists Overcome Significant Roadblock In Computer Display Manufacturing Process (May 4, 2001) -- IBM researchers have discovered a new process for manufacturing computer displays that can vastly improve screen quality and viewing angles while saving manufacturers millions of dollars. The ... full story


Liquid Crystal Film Protects Against Flash Blindness (December 6, 1999) -- Driving into the sun low on the horizon can be temporarily blinding and dangerous, but a new materials application might someday make a windshield that can screen out the continuous glare and still ... full story










Related section:








The results of a Kent State study of a variety of glass substrates of the type used in liquid crystal displays (LCDs) revealed for the first time the way liquid crystals align. All substrates used in LCDs have anisotropic surface roughness. Such a surface is smooth along the grooves but rough in the perpendicular direction. When liquid crystal molecules in LCDs find themselves near such a surface, they orient parallel to the “smooth” direction. This is true of all surfaces, irrespective of the nature of the surface and the treatment method used to prepare it.


In order to make LCDs work, companies have aligned liquid crystal molecules with the optic axis in liquid crystal displays. The most common method used requires glass plates coated with a polymer that are mechanically “rubbed” with a linen cloth. The surface becomes smooth along the rubbing direction and the LCD’s optic axis aligns along the rubbing direction. Several methods other than rubbing also have been developed, including UV treatment and plasma exposure. The results show that even when the surface is untouched but exposed to polarized UV, it develops a structure that is anisotropic and rough.


This research was performed over the past 10 years and appeared as a report in the prestigious journal Physical Review Letters.


Дизайн и программирование N-Studio 
А Б В Г Д Е Ё Ж З И Й К Л М Н О П Р С Т У Ф Х Ц Ч Ш Щ Ъ Ы Ь Э Ю Я
  • Chen Wev   honorary member of ISSC science council

  • Harton Vladislav Vadim  honorary member of ISSC science council

  • Lichtenstain Alexandr Iosif  honorary member of ISSC science council

  • Novikov Dimirtii Leonid  honorary member of ISSC science council

  • Yakushev Mikhail Vasilii  honorary member of ISSC science council

  • © 2004-2024 ИХТТ УрО РАН
    беременность, мода, красота, здоровье, диеты, женский журнал, здоровье детей, здоровье ребенка, красота и здоровье, жизнь и здоровье, секреты красоты, воспитание ребенка рождение ребенка,пол ребенка,воспитание ребенка,ребенок дошкольного возраста, дети дошкольного возраста,грудной ребенок,обучение ребенка,родить ребенка,загадки для детей,здоровье ребенка,зачатие ребенка,второй ребенок,определение пола ребенка,будущий ребенок медицина, клиники и больницы, болезни, врач, лечение, доктор, наркология, спид, вич, алкоголизм православные знакомства, православный сайт творчeства, православные рассказы, плохие мысли, православные психологи рождение ребенка,пол ребенка,воспитание ребенка,ребенок дошкольного возраста, дети дошкольного возраста,грудной ребенок,обучение ребенка,родить ребенка,загадки для детей,здоровье ребенка,зачатие ребенка,второй ребенок,определение пола ребенка,будущий ребенок