The Japanese giant Hitachi has developed the world’s smallest and thinnest Radio Frequency Identification (RFID) chip. Measuring only 0.15 x 0.15 millimeters in size and 7.5 micrometers thick, the wireless chip is a smaller version of the previous record holder – Hitachi’s 0.4 x 0.4 mm “Micro-Chip”.
The company used semiconductor miniaturization and electron beam technology to write data on the chip substrates to achieve this decrease in size. The new chips have a wide range of potential applications from military to transportation, logistics and even consumer electronics. Nicknamed “Powder” or “Dust”, these chips consist of 128-bit ROM (Read Only Memory) that can store a 38-digit number. Hitachi says the distance between each circuit element was reduced using the Silicon-on-Insulator (SOI) process.
Hitachi’s RFID Chips
The company said that the enhanced compactness and thinness of the new chip has further broadened the range of possible applications, including gift certificates that can be authenticated. The new RFID “powder” can also be incorporated into thin paper, such as currency, creating so-called “bugged” money.
Miniature RFID chips may also have advanced military applications such as smartdust. Smartdust is the concept of wireless MEMS (Micro-Electro-Mechanical Systems) sensors that can detect anything from light and temperature to vibrations.
Archived on Wed, 07/11/2007 – 17:20