РОССИЙСКАЯ АКАДЕМИЯ НАУК

УРАЛЬСКОЕ ОТДЕЛЕНИЕ

ИНСТИТУТ ХИМИИ TBEPДОГО ТЕЛА
   
| | | | |
| | | |
 31.01.2007   Карта сайта     Language По-русски По-английски
Новые материалы
Экология
Электротехника и обработка материалов
Медицина
Статистика публикаци


31.01.2007


That's swell: hydrogel plugs in control



30 January 2007



American researchers have used hydrogels to control the flow of liquid in microfluidic devices.


A microfluidic device


Dongshin Kim and David Beebe from the University of Wisconsin, Madison, made plugs that change size to control the flow within a network of channels.


Hydrogels are jelly-like polymers that swell when wetted and have been used to provide actuation for valve and pumps in microfluidic systems. 'However, the swelling phenomenon of hydrogels is not fully utilized yet: most microfluidic components using hydrogels are realizing simple and rudimentary functions,' said Beebe.


Changes in pH can alter the shape of hydrogel bars, and integrating them into the assembly of a chip means it can provide sophisticated functions, not available via traditional assembly, according to Beebe. 'One can change the chip function without fabricating a new chip,' he said.



"Changes in pH can alter the shape of hydrogel bars, and integrating them into the assembly of a chip means it can provide sophisticated functions, not available via traditional assembly"

Aaron Wheeler, University of Toronto, Canada, said that Beebe's work is a 'creative, innovative approach to integrate active components in microfluidic devices. There are many useful micro-scale technologies that are awkward to integrate in microfluidic devices because of the closed nature of microfluidic systems. This innovation, which enables spatial control of macro-scale objects in closed microchannels, is exciting because it suggests future microfluidic systems that will be compatible with micro-scale technologies requiring precise spatial control, which may result in new analytical tools.'


Beebe's ultimate goal is 'to create "smart" systems that can make autonomous decisions based on either the local environment or the result of a previous processing step'. He continued: 'For example, a chemical synthesis chip that "knows" when to move to the next step automatically, based on the autonomous sensing of a product.'


Debora Giovanelli



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

  • © 2004-2019 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