As described in the journal Advanced Materials, new antennas so thin that they can be sprayed into place are also robust enough to provide a strong signal in the bandwidths that will be used by 5G mobile devices. The antennas, which are made from a new type of two-dimensional material called MXene, could have important ramifications for ¡°internet of things¡± technology.
The MXene antennas, developed at Drexel University perform nearly as well as the copper antennas found today in most mobile devices, but with the benefit of being just a fraction of their thickness and weight.
This combination of communications performance with extreme thinness, flexibility, and durability sets a new standard for antenna technology. While copper antennas have been the best in terms of performance for quite some time, their physical limitations have prevented connected and mobile technology from making the big leaps forward that many predicted. But, due to their unique set of characteristics MXene antennas could play an enabling role in the development of ¡°internet of things¡± technology.
Beyond signal handling capabilities, antennas for devices of the future must also be able to perform in environments outside of the circuit boards of phones and computers. This makes MXene an appealing material for new antennas because it can be spray applied, screen printed, or inkjet-printed onto just about any substrate and remains flexible without sacrificing performance. This puts MXene at a distinct advantage because it disperses in water to produce ink, which can be sprayed or printed to create antennas.
The spray-coated MXene antennas described in Advance Materials were between 7-14 times thinner and 15-30 times lighter than similar copper antennae, even thinner than a coat of paint. The researchers tested the antennas in both lab and open environments for gain, radiation efficiency, and directivity across the three radio frequencies commonly used for telecommunication. This included one in the target frequency for 5G devices.
In each instance, the MXene antennas performed within 5 percent of copper antennas, with performance increasing with the thickness of the antenna. MXenes were also 98 percent as effective as their copper counterparts operating in the 5G bandwidth.
Their performance exceeded that of several new materials being considered for antennas, including silver ink, carbon nanotubes, and graphene. And, significantly, these performance numbers did not waiver when the MXene antennas were subjected to as many as 5,000 bending cycles — a mark of durability that far surpasses other materials.
MXene¡¯s scalability and environmental sustainability in manufacturing have been well established.
References
Advanced Materials, November 2020, ¡°Solution‐Processed Ti 3 C 2 T x MXene Antennas for Radio‐Frequency Communication,¡± by Meikang Han, et al. © 2020 John Wiley & Sons, Inc. All rights reserved.
To view or purchase this article, please visit:
Solution‐Processed Ti3C2Tx MXene Antennas for Radio‐Frequency Communication - Han - 2021 - Advanced Materials - Wiley Online Library
5G »ç¹° ÀÎÅͳÝÀ» À§ÇÑ ¡®¸·¼¾¡¯ ¾ÈÅ׳ªÀÇ ¹Ì·¡
¡®¾îµå¹ê½ºµå ¸ÅÅ͸®¾ó½º(Advanced Materials)¡¯ Àú³Î¿¡ ¹ßÇ¥µÈ ¹Ù¿Í °°ÀÌ, ½ºÇÁ·¹ÀÌ ºÐ»ç ÇüÅ·ΠÁ¦ÀÛ °¡´ÉÇÑ ¾ãÀº »õ·Î¿î ¾ÈÅ׳ª°¡ 5G ¸ð¹ÙÀÏ ÀåÄ¡¿¡¼ »ç¿ëÇÒ ´ë¿ªÆøÀÇ °·ÂÇÑ ½ÅÈ£¸¦ ¹Þ´Âµ¥ ÃæºÐÇÑ °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¸·¼¾(MXene)À̶ó´Â »õ·Î¿î À¯ÇüÀÇ 2¸é Àç·á·Î ¸¸µé¾îÁø ÀÌ ¾ÈÅ׳ª´Â ¡®»ç¹° ÀÎÅͳݡ¯ ±â¼ú¿¡ Áß¿äÇÑ ¿µÇâÀ» ¹ÌÄ¥ ¼ö ÀÖ´Ù.
µå·º¼¿ ´ëÇб³(Drexel University)¿¡¼ °³¹ßµÈ ¸·¼¾ ¾ÈÅ׳ª´Â ¿À´Ã³¯ ´ëºÎºÐÀÇ ¸ð¹ÙÀÏ ÀåÄ¡¿¡¼ º¼ ¼ö ÀÖ´Â ±¸¸® ¾ÈÅ׳ª¿Í °ÅÀÇ °°Àº ¼º´ÉÀ» ¹ßÈÖÇÏÁö¸¸ ±¸¸® ¾ÈÅ׳ªÀÇ µÎ²²¿Í ¹«°ÔÀÇ ÀϺο¡ ºÒ°úÇÏ´Ù´Â ÀÌÁ¡À» °®°í ÀÖ´Ù.
ÀÌ·¯ÇÑ Åë½Å ¼º´É°ú ±ØµµÀÇ ¾ãÀ½, À¯¿¬¼º ¹× ³»±¸¼ºÀÇ Á¶ÇÕÀº ¾ÈÅ׳ª ±â¼úÀÇ »õ·Î¿î Ç¥ÁØÀ» Á¤ÀÇÇÏ°í ÀÖ´Ù. ±¸¸® ¾ÈÅ׳ª´Â ²Ï ¿À·§µ¿¾È ¼º´É ¸é¿¡¼ ÃÖ°í¿´´Ù. ÇÏÁö¸¸ ¹°¸®Àû ÇÑ°è·Î ÀÎÇØ ¡®¿¬°á¡¯ ¹× ¡®¸ð¹ÙÀÏ¡¯ ±â¼ú¿¡ ÀÖ¾î ¸¹Àº »ç¶÷µéÀÌ ¿¹»óÇß´ø ¹Ù¿Í °°ÀÌ Å« µµ¾àÀ» ÀÌ·çÁø ¸øÇß´Ù. ±×·¯³ª °íÀ¯ÇÑ Æ¯¼ºÀ¸·Î ÀÎÇØ ¸·¼¾ ¾ÈÅ׳ª´Â ¡®»ç¹° ÀÎÅͳݡ¯ ±â¼ú °³¹ß¿¡¼ Áß¿äÇÑ ¿ªÇÒÀ» ´ã´çÇÒ ¼ö ÀÖ´Ù.
½ÅÈ£ ó¸® ±â´É ¿Ü¿¡µµ ¹Ì·¡ÀÇ ÀåÄ¡¿ë ¾ÈÅ׳ª´Â ÀüÈ ¹× ÄÄÇ»ÅÍÀÇ È¸·Î ±âÆÇ ¿ÜºÎ ȯ°æ¿¡¼µµ ÀÛµ¿ÇÒ ¼ö ÀÖ¾î¾ß ÇÑ´Ù. µû¶ó¼ ¸·¼¾Àº °ÅÀÇ ¸ðµç ±âÆÇ¿¡ ½ºÇÁ·¹ÀÌ ¹æ½ÄÀ» Àû¿ëÇÏ¿©, ½ºÅ©¸° Àμ⠶Ǵ À×Å©Á¬ ÀμⰡ °¡´ÉÇÏ°í ¼º´É ÀúÇÏ ¾øÀÌ À¯¿¬¼ºÀ» À¯ÁöÇϱ⠶§¹®¿¡ »õ·Î¿î ¾ÈÅ׳ª¿¡ ´ëÇÑ ¾ÆÁÖ ¸Å·ÂÀûÀÎ ¼ÒÀçÀÌ´Ù. Áï, ¸·¼¾Àº ¹°°ú À¶ÇÕÇÏ¿© ¾ÈÅ׳ª¸¦ ¸¸µé±â À§ÇØ ½ºÇÁ·¹ÀÌ·Î ºÐ»çµÇ°Å³ª ÀμâµÉ ¼ö ÀÖ´Â À×Å©·Î Á¦ÀÛ °¡´ÉÇϱ⠋š¹®ÀÌ´Ù.
¡®¾îµå¹ê½ºµå ¸ÅÅ͸®¾ó½º¡¯¿¡ ¼Ò°³µÈ ½ºÇÁ·¹ÀÌ ºÐ»ç·Î ÄÚÆÃµÈ ¸·¼¾ ¾ÈÅ׳ª´Â À¯»çÇÑ ±¸¸® ¾ÈÅ׳ªº¸´Ù 7~14¹è, 15~30¹è ´õ °¡º¿ì¸ç ÆäÀÎÆ® ÄÚÆú¸´Ù ´õ ¾ã´Ù. ¿¬±¸ÀÚµéÀº ÀϹÝÀûÀ¸·Î Åë½Å¿¡ »ç¿ëµÇ´Â 3°¡Áö ¹«¼± ÁÖÆļö¿¡ ´ëÇÑ À̵æ, ¹æ»ç È¿À²¼º ¹× ÁöÇ⼺À» À§ÇØ ½ÇÇè½Ç°ú °³¹æÇü ȯ°æ¿¡¼ ÀÌ »õ·Î¿î ¾ÈÅ׳ª¸¦ Å×½ºÆ®Çß´Ù. ¿©±â¿¡´Â 5G ÀåÄ¡ÀÇ ¸ñÇ¥ ÁÖÆļöµµ Æ÷ÇԵǾú´Ù.
°¢ °æ¿ì, ¸·¼¾ ¾ÈÅ׳ª´Â ±¸¸® ¾ÈÅ׳ªÀÇ Å©±â 5% ³»¿¡¼ ¼öÇàµÇ¾úÀ¸¸ç ¾ÈÅ׳ª µÎ²²¿¡ µû¶ó ¼º´ÉÀÌ Áõ°¡Çß´Ù. ¸·¼¾Àº ¶ÇÇÑ 5G ´ë¿ªÆø¿¡¼ ÀÛµ¿ÇÏ´Â ±¸¸® Á¦Ç°º¸´Ù 98% ´õ È¿°úÀûÀ̾ú´Ù.
¸·¼¾ ¾ÈÅ׳ªÀÇ ¼º´ÉÀº Àº À×Å©, ź¼Ò ³ª³ëÆ©ºê, ±×·¡ÇÉÀ» Æ÷ÇÔÇÏ¿© ¾ÈÅ׳ª¿ëÀ¸·Î ÇöÀç °í·Á ÁßÀÎ ¿©·¯ ½Å¼ÒÀçÀÇ ¼º´ÉÀ» ´É°¡ÇÏ°í ÀÖ´Ù. ´õ Áß¿äÇÑ °ÍÀº, ÀÌ·¯ÇÑ ¼º´É ¼öÄ¡´Â ¸·¼¾ ¾ÈÅ׳ª°¡ ´Ù¸¥ Àç·á¸¦ ÈξÀ ´É°¡ÇÏ´Â ³»±¸¼º¿¡ Àִµ¥, ÃÖ´ë 5,000¹øÀÇ ±ÁÈû Áֱ⸦ °Þ¾úÀ» ¶§µµ ÇüŸ¦ À¯ÁöÇß´Ù. Á¦Á¶ ºÐ¾ß¿¡¼ ¸·¼¾ÀÇ È®À强°ú ȯ°æÀû Áö¼Ó °¡´É¼ºÀº ÀÌ¹Ì Àß È®¸³µÇ¾î ÀÖ¾î, ÇâÈÄ ¸·¼¾ ¾ÈÅ׳ª¿¡ ´ëÇÑ °³¹ßÀº ´õ Å« ÆøÀ¸·Î ÁøÇàµÉ °Í °°´Ù.
[References]
Advanced Materials, November 2020, ¡°Solution‐Processed Ti 3 C 2 T x MXene Antennas for Radio‐Frequency Communication,¡± by Meikang Han, et al. © 2020 John Wiley & Sons, Inc. All rights reserved.
To view or purchase this article, please visit:
Solution‐Processed Ti3C2Tx MXene Antennas for Radio‐Frequency Communication - Han - 2021 - Advanced Materials - Wiley Online Library