Potential bio-accumulation of nanoscale particles.
Accumulation of a substance within a species can occur due to lack of degradationor excretion
Many nanoparticles are not biodegradable.
If nanoparticles enter organisms low in the food web, they may be expected to accumulate in organisms higher in the food web.
Very little is understood about possible health
effects of nanoparti
Granulomas (miscropic nodules), consisting particles, live and dead cells, and debris and could impair cellular and physiological (gas exchange) lung functions and give rise to fibrosis, more defined nodules, and other lesions.
Fibers are generally of more health hazard than other forms of particulates. It is well established that the pathogenicity of a fiber in the lungs directly correlates
Shape Memory Polymer
< Haibao Lu. etc, Science, Materials 2013, 6, 3742-3754 >
Nanoscale Design of Nano-Sized Particles in Shape-Memory Polymer Nanocomposites Driven by Electricity
- What is SMP??
Polymeric smart materials that have the ability to return from a deformed state to their original shape.
By external stimulus, such as
temperature, electric, magnetic field, lig
recognition in nanoscale systems.
While microfabrication techniques such as photolithography, microcontact
printing, micromachining, and microwriting can produce patterns as small
as 0.1 mm, production of sub-100-nm structures still poses a significant
challenge.
At present, such high-resolution fabrication can be achieved using scanning
probe lithography (SPL).
nanoscale의 patterning을
할 수 있다.
▶ Nano array ?
판에 원하는 물질을 정렬하는 방법으로 원하는 particle과 반응성이 있는 물질
을 기판위에 DPN기술로 patterning을 한 후 나머지 영역에 반응성이 없는 물
질로 passivition을 한 뒤 선택적으로 nanoparticle을 정렬시키는 방식으로 만
들 수 있다.