You can use 3D printing technology to make a few electronic products such as antennas and batteries, but semiconductors and light-emitting diodes have been elusive. You usually need some other manufacturing techniques to make these products. A group of researchers in Princeton recently solved this problem. They have found a way to manufacture quantum dot LEDs using only 3D printers. Scientists choose printable electrodes, polymers and semiconductors that dissolve in solvents to prevent them from damaging the underlying layers during printing. After this, the team used design software to print materials and mix them. In this case, many tiny LEDs are manufactured, and you can print them into many objects, including curved surfaces.
Researchers believe that the current technology can be used to make smart contact lenses with built-in displays. But this is just the beginning. This method can be used in cooperation with other semiconductors and can be used to combine solar cells, transistors and other electronic products, which was previously impractical or impossible. Before these things could happen, the Princeton University scientists would have to improve the resolution and performance of their 3D printing technology.

Industrial sectional High Speed Overhead Door

Electric Overhead Sliding Door For Logistic
Product Description:

Name	Sectional overhead glass panel garage door
Operation way	electric /remote/manual
Position	garage/shop/auto4S store/Industrial/Garden etc.
Door panel structure	aluminum alloy frame +Tempered Glass / Polycarbonate Glass /double-glazing
Door panel frame	material	aluminum alloy
	thickness	2.0mm
	color	white, black ,gray, silver gray, wood grain, cream (any colours can be specified)
	surface Treating	baking varnish
Thickness of door panel	40mm/50mm
Core of the door panel	Tempered Glass	5.0`6.0mm thickness ,Full view clear or frosted
	Polycarbonate Glass	5.0mm ~10mm thickness ,Full view clear or frosted
	aluminium sheet	9.0mm in thickness,baking varnish with surface traeting,color like the frame
	other tempered Glass	mirror glass,baking glass and many kind of glass for your options

choose your glass:
The glass can be use polycarbonate glass( clear or frosted )
and tempered glass (clear or frosted/coated colour /tinted color/mirrow)
5-10mm thickness for glass
>>Tempered Glass - enhanced safety
>>Polycarbonate - superior strength with UV protection

hardware Accessories

Guide rail	Size	2"/3"
	Materail	galvanized steel
	Thickness	2.0mm
Bracket	Materail	galvanized steel
	Thickness	3.0mm
Hinge	Model	Finger-protect/normal
	Materail	galvanized steel
	Thickness	3.0mm
Roller	Size	2"/3"
	Materail	galvanized steel/Nylon
shaft	Model	solid/hollow
	Materail	galvanized steel
External key lock	For independent garage door, this sort of lock allows you to use external key to start the clutch deviceand open the door in case of power failure under the condition that there are no entries or side doors.
Box airbag safety system	The door will be automatically to rise If there are any obstacles in the process of downward
Spring break device	When the spring is broken,the door can auto stop to prevent the door falling down
Cable break safety system	Once the cable is broken ,this device will blocked on the guide rails in case of breakage of the steel wire prevent the door falling down
V external reinforcing bars	helping to enhance the strength of door panels,1.0mm thickness, 80mm height, with the bars the door can against the Hurricane

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SHENZHEN HONGFA AUTOMATIC DOOR CO., LTD , https://www.hongfahss.com