Nanoparticles present possible dangers
- due to the high surface to volume ratio
pass through cell membranes in organisms
Smaller nanoparticles evinced increased cytotoxicity.
Self-assembly :
process that disordered system of components forms an organized structure or pattern
The device is switched on - >
the pump pushes ions across the lipid membrane,
What is a Mobile Device
A mobile device is a pint-sized computing device.
Computers have been miniaturized into industrial and personal handhelds
How the mobile devices works
Just as there are several different types of mobile messaging (SMS, EMS, MMS, etc.) there are also several different mobile phone standards:
- AMPS
- TDMA
- GSM
-CDMA
장점
Weight shifting
upright, hands-free position
→ active range of motion,
achieve occupational goals
단점
large turning radius
Motorized toy vehicles
장점: looks like a toy, preparation for wheelchair
단점: difficult to use indoors
MiniBot, Gobot
대상: 12개월 ~ 6세
Indoors or outdoors on flat surfaces
장점: close to objects and peers,
new sensory
Photoconductive device란?
-정의
빛을 비추면 빛 에너지를 흡수해서 전하(電荷)를 운반하는 하전체(荷電體)의 양이 증가하고, 전기전도율이 증가하는 성질(광전도성:내부광전효과의 하나)을 가지는 소자(素子).
Photoconductive effect에 대해
-Photoconductive effect의 정의
광을 조사하면 반도체에 케리어가 발생
비교분석표
CRT
반응속도가 빠르고 저가이다.
크기 크다, 동작 전압소모가 크다
컴퓨터, TV
PDP
대형화면 구현에 적합하다소모전력이 크다, 측면 화질 떨어짐
벽걸이 TV
LCD
저소비전력-에너지 절약형,
휴대형 기기에 적합
어두운 곳에서 표시의 선명도가 떨어진다, 시야각이 좁다
휴대폰, TV,