some products are developed from market research which uncovers a need for a new product or a demand for an improved existing product. This is refered to as market pull
Technological developments in materials, components or manufacturing methods leads to the development of new and improved this is called technological push

For example
many touch screen devices only exist because of the material graphene
the technology now exists to weave conductive threads into fabric for clothing, which when worn will interact directly with the water
market pull : a new product is developed in response to a demand in the market or users
technology push : products developed as a result of new technology
conductive : the ability to transmit heat or electricity
