{"id":681,"date":"2014-04-03T14:46:58","date_gmt":"2014-04-03T22:46:58","guid":{"rendered":"http:\/\/www.kylemathewson.com\/?p=681"},"modified":"2014-04-03T14:46:58","modified_gmt":"2014-04-03T22:46:58","slug":"wirelessly-powered-and-transmitting-epidermal-eeg-patches","status":"publish","type":"post","link":"https:\/\/sites.psych.ualberta.ca\/kylemathewson\/wirelessly-powered-and-transmitting-epidermal-eeg-patches\/","title":{"rendered":"Wirelessly powered and transmitting epidermal EEG patches"},"content":{"rendered":"<div><strong>What an exciting project to be involved on, thanks to everyone who was part of this giant collaborative project. Here is a link to the paper in my reprint archive for anyone interested: <\/strong><\/div>\n<div>\n<a href=\"https:\/\/internal.psychology.illinois.edu\/reprints\/index.php?page=request_article&amp;site_id=58&amp;article_id=2823\" target=\"_blank\">Xu, S.*, Zhang, Y. *, Jia, L. *, Mathewson, K.E. *, Jang, K.I., Kim, J.H., Fu, H., Huang, X., Chava, P., Wang, R., Bhole, S., Wang, L., Na, Y.J., Guan, Y., Flavin, M., Han, Z., Huang, Y., &amp; Rogers, J.A. (2014). Soft microfluidic assemblies of sensors, circuits and radios for the skin. Science. 344(6179), 70-74. (*co-first author). <\/a><\/div>\n<p>&nbsp;<\/p>\n<div>Also some great videos showing the device as well as more information are available on the <a href=\"http:\/\/publish.illinois.edu\/shengxu\/multimedia\/\" target=\"_blank\">website of my colleague Dr. Sheng Xu <\/a><br \/>\n<span style=\"font-size: 13px;\">\u00a0<\/span><\/div>\n<p><iframe loading=\"lazy\" src=\"\/\/www.youtube.com\/embed\/dxhoLxRYsRU\" height=\"315\" width=\"560\" allowfullscreen=\"\" frameborder=\"0\"><\/iframe><\/p>\n<p>&nbsp;<\/p>\n<div>_________________________________________________________________________<\/div>\n<div><\/div>\n<div><\/div>\n<div>4\/3\/2014 | Liz Ahlberg, Physical Sciences Editor | 217-244-1073;\u00a0<a href=\"mailto:eahlberg@illinois.edu\">eahlberg@illinois.edu<\/a><\/div>\n<p>CHAMPAIGN, Ill. \u2014 Wearing a fitness tracker on your wrist or clipped to your belt is so 2013.<\/p>\n<p>&nbsp;<\/p>\n<p>Engineers at the University of Illinois at Urbana-Champaign and Northwestern University have demonstrated thin, soft stick-on patches that stretch and move with the skin and incorporate commercial, off-the-shelf chip-based electronics for sophisticated wireless health monitoring.<\/p>\n<div>\n<p>The patches incorporate a unique microfluidic construction with wires folded like origami to allow the patch to bend and flex without being constrained by the rigid electronics components. | Photo by Felice Frankel |<br \/>\n<a href=\"https:\/\/www.youtube.com\/watch?v=dxhoLxRYsRU&amp;feature=youtu.be\" target=\"_blank\">VIEW VIDEO<\/a>\u00a0demonstrating flexibility of the new device<\/p>\n<\/div>\n<p>The patches stick to the skin like a temporary tattoo and incorporate a unique microfluidic construction with wires folded like origami to allow the patch to bend and flex without being constrained by the rigid electronics components. The patches could be used for everyday health tracking \u2013 wirelessly sending updates to your cellphone or computer \u2013 and could<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-medium wp-image-683\" alt=\"demo3_CREDIT- John Rogers\" src=\"http:\/\/kylemathewson.korymathewson.name\/wp-content\/uploads\/2014\/04\/demo3_CREDIT-John-Rogers-300x200.jpg\" width=\"300\" height=\"200\" srcset=\"https:\/\/sites.psych.ualberta.ca\/kylemathewson\/wordpress\/wp-content\/uploads\/2014\/04\/demo3_CREDIT-John-Rogers-300x200.jpg 300w, https:\/\/sites.psych.ualberta.ca\/kylemathewson\/wordpress\/wp-content\/uploads\/2014\/04\/demo3_CREDIT-John-Rogers-768x512.jpg 768w, https:\/\/sites.psych.ualberta.ca\/kylemathewson\/wordpress\/wp-content\/uploads\/2014\/04\/demo3_CREDIT-John-Rogers-1024x683.jpg 1024w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>revolutionize clinical monitoring such as EKG and EEG testing \u2013 no bulky wires, pads or tape needed.<\/p>\n<p>\u201cWe designed this device to monitor human health 24\/7, but without interfering with a person\u2019s daily activity,\u201d said\u00a0<a href=\"http:\/\/www.mech.northwestern.edu\/people\/faculty\/profiles\/haung-yonggang.html\" target=\"_blank\">Yonggang Huang,<\/a>\u00a0the\u00a0<a href=\"http:\/\/www.northwestern.edu\/\" target=\"_blank\">Northwestern University<\/a>\u00a0professor who co-led the work with Illinois professor\u00a0<a href=\"http:\/\/www.matse.illinois.edu\/faculty\/Rogers.html\" target=\"_blank\">John A. Rogers.<\/a>\u00a0\u201cIt is as soft as human skin and can move with your body, but at the same time it has many different monitoring functions. What is very important about this device is it is wirelessly powered and can send high-quality data about the human body to a computer, in real time.\u201d<\/p>\n<p>The researchers did a side-by-side comparison with traditional EKG and EEG monitors and found the wireless patch performed equally to conventional sensors, while being significantly more comfortable for patients. Such a distinction is crucial for long-term monitoring, situations such as stress tests or sleep studies when the outcome depends on the patient\u2019s ability to move and behave naturally, or for patients with fragile skin such as premature newborns.<\/p>\n<p>The team will publish its design in the April 4 issue of Science. See\u00a0<a href=\"https:\/\/www.youtube.com\/watch?v=dxhoLxRYsRU&amp;feature=youtu.be\" target=\"_blank\">video.\u00a0<\/a><\/p>\n<p>Rogers\u2019 group at Illinois\u00a0<a href=\"http:\/\/news.illinois.edu\/news\/11\/0811skin_electronics_JohnRogers.html\" target=\"_blank\">previously demonstrated<\/a>\u00a0skin electronics made of<\/p>\n<p><span style=\"font-size: 13px;\">Skin-mounted devices could give those interested in fitness tracking a more complete and accurate picture of their activity level.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-682 alignleft\" alt=\"2_CREDIT Felice Frankel\" src=\"http:\/\/kylemathewson.korymathewson.name\/wp-content\/uploads\/2014\/04\/2_CREDIT-Felice-Frankel.jpg\" width=\"320\" height=\"280\" \/><\/p>\n<p>very tiny, ultrathin, specially designed and printed components. While those also offer high-performance monitoring, the ability to incorporate readily available chip-based components provides many important, complementary capabilities in engineering design, at very low cost.<br \/>\n\u201cOur original epidermal devices exploited specialized device geometries \u2013 super thin, structured in certain ways,\u201d Rogers said. \u201cBut chip-scale devices, batteries, capacitors and other components must be re-formulated for these platforms. There\u2019s a lot of value in complementing this specialized strategy with our new concepts in microfluidics and origami interconnects to enable compatibility with commercial off-the-shelf parts for accelerated development, reduced costs and expanded options in device types.\u201d<\/p>\n<p>The multi-university team turned to soft microfluidic designs to address the challenge of integrating relatively big, bulky chips with the soft, elastic base of the patch. The patch is constructed of a thin elastic envelope filled with fluid. The chip components are suspended on tiny raised support points, bonding them to the underlying patch but allowing the patch to stretch and move.<\/p>\n<p>One of the biggest engineering feats of the patch is the design of the tiny, squiggly wires connecting the electronics components \u2013 radios, power inductors, sensors and more. The serpentine-shaped wires are folded like origami, so that no matter which way the patch bends, twists or stretches, the wires can unfold in any direction to accommodate the motion. Since the wires stretch, the chips don\u2019t have to.<\/p>\n<p>A downloadable image and video gallery is\u00a0<a href=\"https:\/\/uofi.box.com\/skinmonitor\" target=\"_blank\">available<\/a>\u00a0(password: microfluidics).<br \/>\n\u201cWhen you measure motion on a wristwatch type device, your body is not very accurately or reliably coupled to the device,\u201d said Rogers, a Swanlund Professor of Materials Science and Engineering at the U. of I. \u201cRelative motion causes a lot of background noise. If you have these skin-mounted devices and an ability to locate them on multiple parts of the body, you can get a much deeper and richer set of information than would be possible with devices that are not well coupled with the skin. And that\u2019s just the beginning of the rich range of accurate measurements relevant to physiological health that are possible when you are softly and intimately integrated onto the skin.\u201d<br \/>\n<img decoding=\"async\" class=\"alignleft\" alt=\"closeup of device\" src=\"http:\/\/news.illinois.edu\/WebsandThumbs\/Rogers,John\/closeup_a.jpg\" \/><br \/>\nThe researchers hope that their sophisticated, integrated sensing systems could not only monitor health but also could help identify problems before the patient may be aware. For example, according to Rogers, data analysis could detect motions associated with Parkinson\u2019s disease at its onset.<\/p>\n<p>\u201cThe application of stretchable electronics to medicine has a lot of potential,\u201d Huang said. \u201cIf we can continuously monitor our health with a comfortable, small device that attaches to our skin, it could be possible to catch health conditions before experiencing pain, discomfort and illness.\u201d<\/p>\n<p>The National Security Science and Engineering Faculty Fellowship of Energy, the Korean Foundation for International Cooperation of Science and Technology, and the Department of Energy supported this work.<\/p>\n<p>Rogers directs the\u00a0<a href=\"http:\/\/mrl.illinois.edu\/\" target=\"_blank\">Frederick Seitz Materials Research Laboratory<\/a>\u00a0at Illinois and also is affiliated with the\u00a0<a href=\"http:\/\/beckman.illinois.edu\/\">Beckman Institute for Advanced Science and Technology<\/a>\u00a0and the departments of\u00a0<a href=\"http:\/\/www.scs.illinois.edu\/chem\/index.html\" target=\"_blank\">chemistry,<\/a>\u00a0of\u00a0<a href=\"http:\/\/www.mechse.illinois.edu\/\" target=\"_blank\">mechanical science and engineering,<\/a>\u00a0of\u00a0<a href=\"http:\/\/www.bioen.illinois.edu\/\" target=\"_blank\">bioengineering<\/a>\u00a0and of<a href=\"http:\/\/www.ece.illinois.edu\/\" target=\"_blank\">electrical and computer engineering.<\/a><\/p>\n<p>Huang is the Joseph Cummings Professor of Civil and Environmental Engineering and Mechanical Engineering at Northwestern\u2019s\u00a0<a href=\"http:\/\/www.mccormick.northwestern.edu\/\" target=\"_blank\">McCormick School of Engineering and Applied Science.<\/a><\/p>\n<div>\n<p>Editor&#8217;s note: To contact John Rogers, call 217-244-4979; email\u00a0<a href=\"mailto:jrogers@illinois.edu\">jrogers@illinois.edu.<\/a>\u00a0To reach Yonggang Huang, call 847-467-3165; email\u00a0<a href=\"mailto:y-huang@northwestern.edu\">y-huang@northwestern.edu<\/a>.The paper, \u201cSoft microfluidic assemblies of sensors, circuits and radios for the skin,\u201d is available from the\u00a0<a href=\"mailto:eahlberg@illinois.edu\">News Bureau.<\/a><\/p>\n<p>Media contacts:<br \/>\nLiz Ahlberg, Physical Sciences Editor, U. of I. News Bureau; 217-244-1073;\u00a0<a href=\"mailto:eahlberg@illinois.edu\">eahlberg@illinois.edu<\/a><\/p>\n<p>Erin White, Northwestern University News, 847-491-4888;\u00a0<a href=\"mailto:ewhite@northwestern.edu\">ewhite@northwestern.edu<\/a><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>What an exciting project to be involved on, thanks to everyone who was part of this giant collaborative project. Here is a link to the paper in my reprint archive for anyone interested: Xu, S.*, Zhang, Y. *, Jia, L. *, Mathewson, K.E. *, Jang, K.I., Kim, J.H., Fu, H., Huang, X., Chava, P., Wang, &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/sites.psych.ualberta.ca\/kylemathewson\/wirelessly-powered-and-transmitting-epidermal-eeg-patches\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Wirelessly powered and transmitting epidermal EEG patches&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-681","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/sites.psych.ualberta.ca\/kylemathewson\/wp-json\/wp\/v2\/posts\/681","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.psych.ualberta.ca\/kylemathewson\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sites.psych.ualberta.ca\/kylemathewson\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sites.psych.ualberta.ca\/kylemathewson\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.psych.ualberta.ca\/kylemathewson\/wp-json\/wp\/v2\/comments?post=681"}],"version-history":[{"count":0,"href":"https:\/\/sites.psych.ualberta.ca\/kylemathewson\/wp-json\/wp\/v2\/posts\/681\/revisions"}],"wp:attachment":[{"href":"https:\/\/sites.psych.ualberta.ca\/kylemathewson\/wp-json\/wp\/v2\/media?parent=681"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sites.psych.ualberta.ca\/kylemathewson\/wp-json\/wp\/v2\/categories?post=681"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sites.psych.ualberta.ca\/kylemathewson\/wp-json\/wp\/v2\/tags?post=681"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}