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Nanotransfer printing (nTP) (compare with microcontact printing) is a purely additive and high resolution metal printing technique. [1] It mainly relies on the principle of surface chemistry - chemically modified surfaces act as interfacial "release" or "glue" layers to aid in transfer printing nano-structured metal ink from relief features (aka "stamp") to a surface of interest.
Permanent markers are used for writing on metals, plastics, ceramics, wood, stone, cardboard etc. However, the mark made by them is semi-permanent on some surfaces. Most permanent marker ink can be erased from some plastic surfaces (like polypropylene and teflon) with little rubbing pressure. They can be used on ordinary paper, but the ink ...
By the middle of the twentieth century, hundreds of stamp clubs had formed throughout the United States, often affiliated with large organizations, such as the American Philatelic Society or the American Topical Association. Many published their own scholarly articles or journals, while others advertised in the journals of larger philatelic ...
Betty White’s face will be gracing postage stamps soon!. The U.S. Postal Service (USPS) announced the stamp designs for 2025 on Friday, Nov. 15, revealing that one of the stamps will be a ...
Example of a National Park Passport Stamp for the Boston Harbor Islands National Recreation Area. Passport to Your National Parks is a program through which ink stamps can be acquired at no cost at park visitor centers and ranger stations at nearly all of the 433 units of the United States National Park System and most of the National Park Service's affiliated areas.
Each stamp was hand engraved in what is believed to be steel, and laid out in sheets of 200 stamps. The 5-cent stamp is often found today with very poor impressions because the type of ink used contained small pieces of quartz that wore down the steel plates used to print the stamp. On the other hand, most 10-cent stamps are of strong impressions.