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»ç¿ìµð ¾Æ¶óºñ¾ÆÀÇ °¡Àå °ÇÁ¶ÇÑ Áö¿ªÀ¸·ÎºÎÅÍ ¹Ì±¹ ¼­ºÎÀÇ ¹° ºÎÁ· Áö¿ª±îÁö ¹°À» È®º¸Çϱâ À§ÇØ ¾È°³¸¦ ÀÌ¿ëÇÏ´Â ¹æ¾ÈÀÌ È°¹ßÇÏ°Ô ¿¬±¸µÇ°í ÀÖ´Ù. ÀÌ·¯ÇÑ ¾ÆÀ̵ð¾î´Â Áö¿ª»çȸ À¯Áö¿¡ ÇʼöÀûÀÎ ¼öÀÚ¿ø ¼ö¿ä¸¦ ÃæÁ·½ÃÅ°´Âµ¥ µµ¿òÀ» ÁÙ °ÍÀ¸·Î ±â´ëµÈ´Ù. Åػ罺ÀÇ ÇÑ ¿¬±¸ÁøÀº ¹Ù´å°¡¿¡ »ì°í ÀÖ´Â µµ¿ä»õ(Shorebird) ºÎ¸®¿¡¼­ ¿µ°¨À» ¹Þ¾Æ È¿À²ÀûÀÎ ¾È°³ ¼öÁýÀåÄ¡¸¦ Á¦ÀÛÇÏ¿´À¸¸ç, ÀÌ¿¡ ´ëÇÑ ¿¬±¸°á°ú¸¦ ACS Applied Materials & Interfaces Àú³Î¿¡ ¹ßÇ¥ÇÏ¿´´Ù.

Åػ罺ÁÖ¸³´ë ¾Ë¸µÅÏ(UT Arlington)ÀÇ ¿£Áö´Ï¾î¸µÀÎ Cheng Luo ±³¼ö¿Í ¹Ú»ç °úÁ¤ ÁßÀÎ Xin HengÀº ¾È°³³ª À̽½¿¡¼­ ¼öÁýµÈ ¹°À» ÃàÀûÇÒ ¼ö ÀÖ´Â ÀåÄ¡¸¦ ¼³°èÇÏ¿´´Ù. ÀÌ ÀåÄ¡´Â »õÀÇ ºÎ¸® ¸ð¾çÀ» ±â¹ÝÀ¸·Î ÇÑ´Ù. ÀÌ·¯ÇÑ ¾ÆÀ̵ð¾î°¡ ½ÇÇöµÈ´Ù¸é Àü¼¼°è °¡¹³¿¡ ½Ã´Þ¸®´Â Áö¿ªÀ̳ª »ç¸· Áö¿ª¿¡ ¹°À» °ø±ÞÇÒ ¼ö ÀÖÀ» °ÍÀ¸·Î ±â´ëµÈ´Ù.

HengÀº µµ¿ä»õµéÀÌ À½½ÄÀ» ¼öÁýÇϱâ À§ÇØ »ç¿ëÇÏ´Â ¹°¸®Àû ¸ÞÄ¿´ÏÁòÀ» ¼³¸íÇÑ ³í¹®À» º¸¾ÒÀ¸¸ç, ¿©±â¿¡¼­ ¾ÆÀ̵ð¾î¸¦ ¾ò¾ú´Ù. ÀÌµé µµ¿ä»õ´Â ºÎ¸®¸¦ ¿­¾ú´Ù ´Ý¾Ò´ÙÇÏ´Â °úÁ¤À» ÅëÇØ À½½Ä¹°À» ¸ñ¿¡ Áý¾î³Ö´Â´Ù. Luo ±³¼ö¿Í ¿¬±¸ÁøÀº ÀÌ·¯ÇÑ Ãµ¿¬ÀÇ ºÎ¸®¸¦ º¹Á¦Çϱâ À§ÇØ ³ë·ÂÇÏ¿´´Ù. Luo ±³¼ö´Â "¿ì¸®´Â ÀÌ·¯ÇÑ ÀÏÀ» °¡´ÉÇÑÁö¸¦ ¸ÕÀú È®ÀÎÇغ¸°í ½Í¾ú´Ù. ¿¬±¸ÁøÀº ÀΰøºÎ¸®¸¦ Á¦ÀÛÇÏ¿´À¸¸ç, ¹°¹æ¿ïµéÀÌ ºÎ¸®¿Í À¯»çÇÑ °æø(Hinged)À¸·Î µÈ À¯¸®ÆÇ(Glass Plate)¿¡ ÀÇÇØ À̵¿ÇÏ´Â °ÍÀ» ¹ß°ßÇÏ¿´´Ù. ÀÌ·¯ÇÑ °á°ú¸¦ ÅëÇØ ¾È°³³ª À̽½·ÎºÎÅÍ ¹°À» ¼öÈ®ÇÒ ¼ö ÀÖ´Ù´Â °ÍÀ» È®½ÅÇÏ¿´´Ù"°í ¸»ÇÑ´Ù. ±× ÈÄ ¿¬±¸ÁøÀÌ ½Ç½ÃÇÑ ½ÇÇè°á°ú´Â ¼º°øÀûÀ̾ú´Ù. À̵éÀº 10 cm ³ÐÀÌ, 26 cmÀÇ ±æÀ̸¦ °¡Áø À¯¸® Ç÷¹ÀÌÆ®¸¦ ÀÌ¿ëÇÏ¿© ¸î ½Ã°£ µ¿¾È 4½ºÇ¬ Á¤µµÀÇ ¹°À» ¼öÈ®ÇÒ ¼ö ÀÖ¾ú´Ù.

µµ¿ä»õ´Â ¹Ù´å°¡¿¡ »ì°í ÀÖ´Â »õµéÀ» ÀǹÌÇÑ´Ù. À̵éÀº ÀϹÝÀûÀ¸·Î ±æ°í °æø ¸ð¾çÀÇ ºÎ¸®¸¦ °®°í ÀÖÀ¸¸ç, ÀÌ ºÎ¸®´Â ¸ð·¡³ª ¹°¼Ó¿¡ ÀÖ´Â ¸ÔÀ̸¦ ãµµ·Ï ¼³°èµÇ¾î ÀÖ´Ù. Luo ±³¼ö´Â ½ÇÇè½Ç¿¡¼­ Á¦ÀÛÇÑ ºñÆòÇà(Non-parallel)ÀÇ Àΰø ºÎ¸®°¡ µµ¿ä»õ¸¦ ¸ð¹æÇÏ¿´´Ù°í ¸»ÇÑ´Ù. ±×¸®°í µÎ °³ÀÇ À¯¸®ÆÇÀÌ ¸¸³ª´Â ÁöÁ¡¿¡¼­ ÀÀÃàÀÌ ÀÌ·çÁö°Ô ÇÏ¿´´Ù (±×¸² ÂüÁ¶). ÀÀÃàµÈ ¹°Àº ÀÏÁ¤ ä³ÎÀ» ¿î¹ÝµÇ°í, ´Ù½Ã ÀÌ·¯ÇÑ °øÁ¤ÀÌ ¹Ýº¹µÇ°Ô µÈ´Ù.

Luo ±³¼ö¿Í Heug´Â °ÇÁ¶Çϰųª ¹Ý°ÇÁ¶ÇÑ Áö¿ª¿¡¼­ ¹°À» ÃàÀûÇϱâ À§ÇØ º¸´Ù Áö¼Ó°¡´ÉÇÑ ¹æ¹ýÀÌ ÇÊ¿äÇÏ´Ù°í ¸»ÇÑ´Ù. Áö±¸»ó¿¡ ÀÖ´Â À°ÁöÀÇ ¾à Àý¹ÝÀº ÀÌ·¯ÇÑ °ÇÁ¶ ¹× ¹Ý°ÇÁ¶ Áö¿ªÀÌ´Ù. Luo ±³¼ö´Â "½ÇÁ¦ ÀÌ·¯ÇÑ ¹æ¹ýÀ¸·Î ´ë·®»ý»êÈ­°¡ ÀÌ·ç¾îÁú ¼ö ÀÖ´Ù¸é ¾È°³³ª À̽½ÀÌ Á¸ÀçÇÏ´Â ¾î´À Áö¿ª¿¡¼­³ª È°¿ëÇÒ ¼ö ÀÖ´Ù"°í ¸»ÇÑ´Ù. ÀÌ ´ëÇÐ °ø´ëÇÐÀåÀÎ Khosrow Behbehani´Â "ÀÌ·¯ÇÑ ±â¼úÀº Åػ罺 ¹× Ķ¸®Æ÷´Ï¾Æ ÁÖ¿Í °°Àº °¡¹³ÀÌ ½ÉÇÑ Áö¿ªÀÇ ¹®Á¦¸¦ ÇØ°áÇϴµ¥ µµ¿òÀ» ÁÙ °ÍÀÌ´Ù. À̹ø ¿¬±¸´Â °Ñº¸±â¿¡´Â ¿¬°ü¼ºÀÌ ¾ø¾î º¸À̳ª Çö»ó¿¡ ´ëÇÑ ÁÖÀÇ ±íÀº °üÂûÀ» ÅëÇØ Çõ½ÅÀûÀÎ ¾ÆÀ̵ð¾î¸¦ µµÃâÇÒ ¼ö ÀÖÀ½À» º¸¿©ÁÖ°í ÀÖ´Ù. ¾È°³³ª À̽½¿¡¼­ ¹°À» »ý»êÇÏ´Â ±â¼úÀº °¡Àå Áß¿äÇÑ ÀÚ¿øÀ» È®º¸Çϴµ¥ ÀÖ¾î ÀçÁ¤ÀûÀ¸·Î ¾î·Á¿òÀ» °Þ°í ÀÖ´Â Áö¿ª»çȸ¿¡ ¶Ç ÇϳªÀÇ ´ëü ¹æ¾ÈÀ» Á¦°øÇÑ´Ù"°í ¸»Çß´Ù.
 
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Artificial 'beaks' that collect water from fog: A drought solution?
From the most parched areas of Saudi Arabia to water-scarce areas of the western U.S., the idea of harvesting fog for water is catching on. Now, a novel approach to this process could help meet affected communities' needs for the life-essential resource. Scientists describe their new, highly efficient fog collector, inspired by a shorebird's beak, in the journal ACS Applied Materials & Interfaces.
A UT Arlington engineering professor and his doctoral student have designed a device based on a shorebird's beak that can accumulate water collected from fog and dew.
The device could provide water in drought-stricken areas of the world or deserts around the globe.
Cheng Luo, professor in the Mechanical & Aerospace Engineering Department, and Xin Heng, PhD candidate in the same College of Engineering department, published "Bioinspired Plate-Based Fog Collectors" in the Aug. 25 edition of ACS' (American Chemical Society) Applied Materials & Interfaces journal. ACS also included the research in its Public Affairs Weekly release this week.
The idea began when Heng saw an article that explained the physical mechanism shorebirds use to collect their food – driving food sources into their throats by opening and closing their beaks. Luo said that inspired the team to try to replicate the natural beak in the lab.
"We wanted to see if we could do that first," Luo said. "When we made the artificial beaks, we saw that multiple water drops were transported by narrow, beak-like glass plates. That made us think of whether we could harvest the water from fog and dew."
Their experiments were successful. They found out they could harvest about four tablespoons of water in a couple of hours from glass plates that were about 26 centimeters long by 10 centimeters wide.
Shorebirds refers to a general category of bird that lives on the world's shorelines. They typically have long, hinged beaks that are designed to ferret around for prey whether in the sand or the water.
Luo said the hinged, non-parallel artificial beaks the team made in the lab mimic the shorebirds' beaks, forcing the condensation to the point where the two glass plates meet. The water is pumped through a channel, and then the process is repeated.
Luo and Heng said more sustainable methods are needed for accumulating water in arid or semi-arid places, which make up about half of the world's land mass.
"And really, if this method could be mass-produced, it could be used anywhere in the world fog or dew exist," Luo said.
Khosrow Behbehani, dean of the College of Engineering, said the research could help drought-stricken areas like Texas and California.
"The research shows innovative ideas can be triggered by careful observation of seemingly unrelated phenomenon," Behbehani said. "Collecting water from existing fog or dew using this novel method offers another alternative for communities that are strapped for our most precious resource."
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