WEBVTT

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ever since Humpty the egg first fell off his wall people have been dreaming up

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ways to put him together again this led to the invention of adhesiv such as

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tapes glues and a wide range of specialized polymers none of which did

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very much for our friend at the base of the wall then one of the King's Men

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spoke up and said why can't other things just heal themselves the same way that

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we do this is where the invention of self or autonomic healing materials

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comes in which mimic the properties of biological systems like our own when

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damage is inflicted to an autonomic healing compound there is first a near

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immediate trigger response that works to prevent the loss of further material

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somewhat similar to blood clotting that step is followed shortly by transport of

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the materials which are necessary for the third process to take place the

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actual healing this is done in a variety of different ways and across different

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time frames but there are a couple of basic design outlines which are most

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frequently used the the first method aptly named the hollow tube approach

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works by utilizing a network of tiny glass or Fiber capillaries that are

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often used already as a way of reinforcing the ttile strength of

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plastic polymers some of these microchannels are then filled with

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either a highly attractive bonding monomer or a slower working hardening

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substance both of which are dispersed if the healing material receives damage

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such as a cut or a break this will cause them to mix together first allowing the

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monomers to create a bond between the severed sections with the hardening

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agent causing it to solidify afterward since the two reacting agents needed to

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create the healing are continually replenished from external sources this

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type of application tends to Trend towards static structural possibilities

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the second and perhaps more commonly used design is known as the microcapsule

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healing method it is similar in theory to the previous model but instead of

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using tiny channels to deliver the bonding monomers they are encapsulated

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in a substance which is designed to rupture whenever damage is inflicted

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that activates the trigger response not unlike when a trigger response causes

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your significant other to release some hostility that they've been

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encapsulating anyways when these capsules do happen to become ruptured

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the monomers inside the mix with a catalyst that is freely distributed in

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the healing compound around them allowing for the polymerization bond to

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take place without the addition of extra heat or influence while these designs

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are more autonomous the lack of an externally fed delivery system means

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they are less efficient at repairing large damage and will deplete their

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embedded monomers much more quickly through use leading them to be looked at

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more for their protective qualities likely it is this type of material that

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would be used on any articles that you already own that employ self-healing

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technology such as the deflex series of phones from LG where the function is

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purely aesthetic and if you break the phone in half it's not just going to

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whip itself back together it's just to keep your your phone looking shiny but

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there is potential for even cooler stuff in the future and this design model has

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also been implemented using conductive materials and monomers as well so when

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Engineers design an electrical circuit that could like repair itself after

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being separate I mean think about the applications of this that this could

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have on the durability and lifespan of electronic components pretty cool stuff

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I mean it sounds great let's just start making everything out of this stuff so

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we can go ahead and get on with uh abusing our devices the way that many of

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us are habitually want to do as if any of these videos were ever that simple

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while many materials are labeled as self-healing often times they fall short

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of true autonomy as they require the use of excess resins during manufacturing

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and light or heat conditions that need to be applied manually or through the

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use of a complimenting device So currently these systems are very limited

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in terms of the amount and type of damage they can repair due to the eventual depletion of either the

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compound deliver dely channels or the embedded monomer capsules and Catalyst

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that I mentioned before so for the time being it might be best if you refrain

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from doing your best Jason vor's impression and acting like your phone is

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a counselor at Camp Crystal Lake unless of course you've got the means to

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replace it at a moment's notice when you're machete ends up slicing it to

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bits so while we may never be able to do anything for that pile of soup that was

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once Humpty at least in the meantime we can keep your cell phone from looking

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dumpy well we certainly acquired some knowledge today but if you're hungry for

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but also on your iPhone or Android phone so thanks for watching guys like this

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