Seniors and Depression: The difference between depression and dementia. Depression is a mood disorder; dementias like Alzheimerâs disease, can have similar symptoms but they are different illnesses and have different treatment plans.
From a synthesis standpoint, nanotechnologies can be classified as variations of bottom-up technologies, such as self-assembly, or top-down technologies, such as lithographic methods (Box 1). Many nanotechnologies combine aspects of both strategies.
Tasks of micro and nano technology related operations are done in specially designed clean rooms, where dust and dirt is not available. Also, in both micro and nano technology research, scientists have to follow special dress codes to prevent small dust particles interacting with products. Micro technology. Micrometer (also referred to as micron) is a millionth of a meter (10 ^-6 m).