John Rogers, a researcher at the University of Illinois, demonstrated this "patch." His lab has developed a flexible skin "patch" that uses light pulses to monitor heart rate or sunlight intensity.
But this "plaster" does not require a battery. It provides power through a smartphone or tablet equipped with an NFC (Near Field Communication) chip, and Apple Pay or an application for sharing photos between mobile phones utilizes NFC chips. In other words, it is the radio signal emitted by the mobile phone that provides power for the "patch" so that it can transmit data. Rogers said this means that health monitoring equipment can be cheaper, smaller and lighter.
According to the MIT Technology Review, Rogers is an expert in “epidermal electronics.†He proposed the concept of multiple devices that integrate LED lights, a small number of electronic circuits, and sensors on elastic materials. Its newly developed product set incorporates several innovations. For example, a sensor uses a light-sensitive dye to detect the intensity of ultraviolet radiation, which also appears in the first product developed by Rogers startup MC10. MC10's My UV Patch is sold by cosmetics giant L'Oréal. It also uses light-sensitive pigments to detect UV-irradiation intensity.
Using four LED lights to shine different colors of light on the skin, the new device can also detect heart rate and blood oxygen. The photodetector detects changes in the color of the reflected light.
According to the MIT Technology Review, one of the downsides of this system is that in order to provide it with electrical energy, the distance between the wearer and the mobile phone or tablet cannot exceed a few centimeters, or the distance from the long-distance NFC receiver cannot exceed. 1 meter. However, most users will not be “away from†their devices.
A battery is required to increase the thickness of another MC10 BioStampRC by 1 or 2 mm. BioStampRC is for researchers who can monitor physiological indicators when people go out. Rogers said that the design without batteries will enable this product to be used in hospitals for new applications and to monitor sleep conditions.
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Animate({scrollLeft:parseInt(t,10)},500)},u=function(o){if(!(0>o||o>e-1)){var a=i.dom.$playlist_scol ;$item =t.filter(":eq("+o+")"),s(a.scrollLeft()+$item.position().left-a.width()/2+n/2),l=o }},d=function(i){var e="current";t.find("> a."+e).removeClass(e),t.filter(":eq("+i+")") .find("> a ").addClass(e)},c=function(t){var e,o=i.dom.$playlist_scol,l=o.scrollLeft(),r=Math.round(.7o .width());"forward"===t?e=l+r:"backward"===t&&(e=lr),n>e?e=0:e>an&&(e=a), s(e)},p=function(){t=i.dom.$playlist_list.find("> li"),e=t.length,n=t.filter(":eq(0)"). outerWidth(!0),o=i.dom.$playlist_scol.width()/n,i.dom.$playlist_list.css("width",en),a=i.dom.$playlist_list.outerWidth(!0 )-i.dom.$playlist_scol.width()};return{init:r,setCurrentToIdx:d,scrollToItemIdx:u,forward:function(){c("forward")},backward:function(){c( "backward")}, hide:function(){return i.dom.$playlist_node.slideUp(300)},update:p}}();t.playlist=o;var a=function(){var t, e=!1,n=function(){var t=i.libs.jQuery,e={};e.top=i.dom.$root.offset().top,e.btm=e.top+ I.dom.$root.height();var n={height:t(window).height(),scrollTop:t(window).scrollTop()},o=e.top>=n.scroll Top&&n.scrollTop+n.height>=e.top,a=e.btm>=n.scrollTop&&n.scrollTop+n.height>=e.btm,l=e.top=d;c?(s=0- r/2-i.dom.$player_wrap.width()-10,u="50%"):(s=0,u=0),i.dom.$player_wrap.css({"margin-left" :s,left:u})}}"1"!==i.fn.miniUnMuteSign.get()&&i.player.setFlashVolume(0)}i.player.resizePlayer(),i.dom.$player_wrap.css ("visibility","visible"),t=l}},100),l=function(){if(!i.utils.browser.isIe6orLower()){var t=i.libs.jQuery;t( Window).scroll(a),t(window).resize(a),i.dom.$player_mini_ctrl.on("click","a[data-action=close]",function(t){t.preventDefault (),e=!0,a(),i.player&&i.player.tvp_player_obj&&i.player.tvp_player_obj.pause&&i.player.tvp_player_obj.pause()}),i.dom.$player_mini_ctrl.on("click"," a[data-action=resize]",function(t){t.preventDefault(),i.dom.$player_wrap.toggleClass("rv-player-mini-big"),i.player.resizePlayer()}) ;var n=i.dom.$player_mini_ctrl.find("a[data-action=mute]"),o=function(){var t=i.player.getFlashVolume();"number"==typeof t? n.removeClass("mute-off mute-on").addClass(0===t?"mute-on ":"mute-off"):n.hide()};o(),n.click(function(){var t=0===i.player.getFlashVolume();i.player.setFlashVolume(t ?80:0,!0)}),i.player.bind("onvolumechange",function(){o(),i.sign.vol_change_by_prog||(i.player.getFlashVolume()>0?i.fn .miniUnMuteSign.on():i.fn.miniUnMuteSign.off())})}}; return {detectVisible:n,init:l}}();t.scrollPlay=a,t.init=function(){ Var t=i.libs.jQuery;i.dom.$root=t(".rv-js-root"),i.dom.$title=i.dom.$root.find(".rv-title a "),i.dom.$autoplay_sw=i.dom.$root.find(".rv-js-autoplay"),i.dom.$player_wrap=i.dom.$root.find(".rv-player -wrap"),i.dom.$player_mod=i.dom.$player_wrap.find(".rv-player-mod"),i.dom.$player_mini_ctrl=i.dom.$player_wrap.find(".rv -player-mini-ctrl"),i.dom.$playlist_node=i.dom.$root.find(".rv-playlist"),i.dom.$playlist_scol=i.dom.$playlist_node.find(" .rv-playlist-scroller"),i.dom.$playlist_list=i.dom.$playlist_node.find("ol.rv-playlist-list"),i.dom.$playlist_ctrl=i.dom.$playlist_node. Find(".rv-playlist-ctrl a"),i.dom.$playlist_prev=i.dom.$playlist_ctrl.filter(".pr Ev"),i.dom.$playlist_next=i.dom.$playlist_ctrl.filter(".next");var n=["nba"];window.ARTICLE_INFO&&~t.inArray(window.ARTICLE_INFO.sub_nav,n }&&(i.dom.$root.addClass("rv-adjust-wide-article"),t(window).resize(i.utils.throttle(function(){i.player&&i.player.resizePlayer&&i.player. resizePlayer()},50))),e=!0},i.ui=t}(window.dc_related_video),function(i){var t,e,n={},o={},a= {},l=function(){var i=function(i){return function(){for(var t=0;t=t&&t+518>i}function n(){e()&&!r&&(i .utils.loadTvp(l),r=!0)}var o=t;i.libs.$=i.libs.jQuery=t,i.utils.debug_log("jquery version is ",i.libs.$ ().jquery),i.userinfo={qq:i.utils.cookie.get("o_cookie")||null},i.config.autoplay_cookie={key:"aboutVideo_v",domain:".qq.com ",path:"/",expires:90},i.config.playing_cookie={key:"dc_vplaying",domain:".qq.com",path:"/",expires:function(){return new Date ((new Date).getTime()+72e5)}},i.config.mini_unmute={key:"rv_mini_unmute",domain:".qq.com",path:"/",expires:1},i. Sign.autoplay=function(){return window.preventAutoPlay===!0?!1:! 0===i.fn.playingGlobalSign.isAnyonePlaying()?!1:"0"===i.fn.autoPlaySign.get()?!1:!("1"===i.fn.playingSign. Get()&&!/\bQQBrowser/i.test(window.navigator.userAgent))}(),i.utils.debug_log("auto play sign: ",i.sign.autoplay),i.ui.init( );var a=function(t){if(t!==i.modName&&i.player.tvp_player_obj)if(i.sign.autoplay=!1,i.utils.debug_log("tring to pause by event... .),i.sign.playstatus&&"play"!==i.sign.playstatus)if("ad"===i.sign.playstatus){i.utils.debug_log("paused(stopvideo) by event" );try{i.player.tvp_player_obj.getPlayer().stopVideo()}catch(e){}}else{i.utils.debug_log("paused by event");try{i.player.tvp_player_obj.pause( }} catch(e){}}else"tostart"==t?i.player.tvp_player_obj.getPlayer().stopVideo():(i.utils.debug_log("will stop after __addlstart or playing"),i. sign.pauseWhenPlay=!0)},l=function(t){i.libs.tvp=t;var n="related_video_info";if(!window[n]||!window[n].vid)return void I.utils.debug_log("Error: related_video_info not found.");i.vinfo=window[n],i.sign.automute=function(){return!!win dow.isRelvideoMute}(),i.utils.debug_log("auto mute sign: ",i.sign.automute);var l="tvp-mod-player-"+i.vinfo.vid;i.ui.setPlayerModId (l), i.libs.$(window).on("video:pause",function(t,e){i.utils.debug_log("received custom event from ",e),a(e)}) ,i.config.tvp_player={modId:l,autoplay:i.sign.autoplay,loadingadAutoplay:window.preventAutoPlay===!0?!1:i.sign.autoplay,vodFlashSkin:"http://imgcache.qq .com/minivideo_v1/vd/res/skins/TencentPlayerMiniSkin.swf",pic:i.sign.autoplay?"":i.vinfo.pic,flashWmode:"transparent",vodFlashExtVars:{ptag:window.TEN_VIDEO_PTAG||" ",clientbar:0},plugins:{AppBanner:!1,AppRecommend:!1,AppFollow:!1}},i.player.playByVid(i.vinfo.vid),i.ui.setTitle(i.vinfo. Title,i.vinfo.url),i.sign.first_trace_reported=!1,i.player.bind(i.sign.autoplay?"onplay":"onplaying",function(){i.sign.first_trace_reported||i .fn.trace.boss2619(i.sign.autoplay?"first_auto":"first_click",i.vinfo.vid),i.sign.first_trace_reported=!0});var r=!1;i.player.bind ("onplaying",function(){r||i.ui.scrollPlay.init(), r=!0}),i.videos=[];var s=null,u=function(t){t||i.ui.playlist.hide(),s&&clearTimeout(s),i.videos.push( I.vinfo), o.each(t,function(t,e){e.vid!==i.vinfo.vid&&i.videos.push(e)}),i.utils.debug_log(i.videos); Var n="";o.each(i.videos,function(t,e){e.title.replace(/[^\x00-\xff]/gi,"").length>40?e.stitle =i.utils.cutstr2(e.title,40)+"...":e.stitle=e.title,n+="",n+=" ",n+="
",n+="
",n+=" "+e.stitle+"",n+="
",n+=" ",n+=""}),i.dom.$playlist_list.html(n),i.ui.playlist.init();var a=function(t){if(t){var e,n;return o.each(i.videos,function(i,o){return o.vid===t?(e=o,n=i,!1):void 0}),e&&(e .idx=n),e}},l=function(t){if(!(0>t||t>i.videos.length-1)){var e=i.videos[t];i. player.playByVid(e.vid),i.ui.playlist.setCurrentToIdx(t),i.ui.playlist.scrollToItemIdx(t),i.ui.setTitle(e.title,e.url)}};i. Dom.$playlist_list.on("click","a[data-vid]",function(t){t.preventDefault();var e=o(this).attr("data-vid"),n= a(e);l(n.idx),i.fn.trace.boss2619("user_click",e)}),i.player.bind("ongetnext",function(t){i.utils.debug_log( "event: ongetnext");var n=a(t),o=n.idx+1,r=e();o
Source: MIT Technology Review
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