You do not have permission to edit this page, for the following reasons:

This IP address has been blocked from editing Wikipedia.
This does not affect your ability to read Wikipedia pages.
Most people who see this message have done nothing wrong. Some kinds of blocks restrict editing from specific service providers or telecom companies in response to recent abuse or vandalism, and can sometimes affect other users who are unrelated to that abuse. Review the information below for assistance if you do not believe that you have done anything wrong.

The IP address or range 3.85.0.0/16 has been blocked (disabled) by ‪ST47‬ for the following reason(s):

The IP address that you are currently using has been blocked because it is believed to be a web host provider. To prevent abuse, web hosts may be blocked from editing Wikipedia.
You will not be able to edit Wikipedia using a web host provider because it hides your IP address, much like a proxy or VPN.
We recommend that you attempt to use another connection to edit. For example, if you use a proxy or VPN to connect to the internet, turn it off when editing Wikipedia. If you edit using a mobile connection, try using a Wi-Fi connection, and vice versa. If you are using a corporate internet connection, switch to a different Wi-Fi network. If you have a Wikipedia account, please log in.
If you do not have any other way to edit Wikipedia, you will need to request an IP block exemption.

How to appeal if you are confident that your connection does not use a web host's IP address:
If you are confident that you are not using a web host, you may appeal this block by adding the following text on your talk page: ((unblock|reason=Caught by a web host block but this host or IP is not a web host. My IP address is _______. Place any further information here. ~~~~)). You must fill in the blank with your IP address for this block to be investigated. Your IP address can be determined here. Alternatively, if you wish to keep your IP address private you can use the unblock ticket request system. There are several reasons you might be editing using the IP address of a web host (such as if you are using VPN software or a business network); please use this method of appeal only if you think your IP address is in fact not a web host.

Administrators: The IP block exemption user right should only be applied to allow users to edit using web host in exceptional circumstances, and they should usually be directed to the functionaries team via email. If you intend to give the IPBE user right, a CheckUser needs to take a look at the account. This can be requested most easily at SPI Quick Checkuser Requests. Unblocking an IP or IP range with this template is highly discouraged without at least contacting the blocking administrator.

This block will expire on 21:48, 22 February 2026.

Even when blocked, you will usually still be able to edit your user talk page, as well as email administrators and other editors.

For information on how to proceed, please read the FAQ for blocked users and the guideline on block appeals. The guide to appealing blocks may also be helpful.

Other useful links: Blocking policy · Help:I have been blocked
Your IP address is in a range that has been blocked on all Wikimedia Foundation wikis. The block was made by ‪Jon Kolbert‬. The reason given is Open proxy/Webhost: See the help page if you are affected .
- Start of block: 05:35, 21 February 2024
- Expiry of block: 05:35, 21 February 2029
Your current IP address is 3.85.235.113. The blocked range is 3.85.0.0/16. Please include all above details in any queries you make. If you believe you were blocked by mistake, you can find additional information and instructions in the No open proxies global policy. Otherwise, to discuss the block please post a request for review on Meta-Wiki. You could also send an email to the stewards VRT queue at stewards@wikimedia.org including all above details.

You can view and copy the source of this page:

((About|pads to prevent sliding|pads to remove contaminants from footwear and wheeled carts|Sticky mat))

((Refimprove|date=September 2017))

'''Sticky pads''' are friction devices used to prevent objects from sliding on a surface, by effectively increasing the friction between the object and the surface.

Sticky pads are used to fix items to otherwise smooth surface that are leaned or that moves, so that objects put on that surface could off due to insufficient friction when the surface inclines or moves.<ref name="StickypadBoatUse">((cite web |author=Carolyn Shearlock | url=https://theboatgalley.com/sticky-pads/ | title=Sticky Pads | publisher=The Boat Galley | date=Jan 2012 | archive-url=https://web.archive.org/web/20170902171302/https://theboatgalley.com/sticky-pads/ | archive-date=2017-09-02 | access-date=2017-09-02 ))</ref>
The pad has large friction coefficient both with the base surface and with the item laid on it, which prevent both the sticky pad from moving with respect to the surface, and objects laid on the pad from moving relative to the pad. Sticky pads are commonly used on car dashboards where forces caused by acceleration of the vehicle would cause objects put on dashboards slip off the otherwise smooth surface of the dashboard.

Contrary to [[fasteners]], sticky pads do not affix objects to the surface. They merely prevent objects from slipping on the surface until the threshold acceleration or inclination angle is exceeded. Sticky pads also usually don't make use of [[adhesives]]. Because of this they are easily detached form the surface, and they need gravity to serve their purpose. In particular, the force acting on the object must have a component perpendicular on the surface and directed towards it. This is different from [[Microsuction tape]] where adhesion of object is achieved by microscopic bubbles on the surface that function as small suction cups. Sticky pads are made of rubber-like materials. This help dissipate kinetic energy when the base surface vibrates, such that object on the pad keep maintaining large enough contact surface with the pad and tangential friction forces keep preventing objects from slipping relative to the pad.

==Principle of operation==
Although basic principles of sticky pads are simple, physics behind may be complex due to many specific and sometimes conflicting requirements arising from practical use. Mechanisms involved in high friction materials go beyond simple [[friction|Coulomb friction]].<ref name="FrictionRubber">((cite thesis |author=Elena Loredana Deladi | url=https://www.utwente.nl/en/et/ms3/research-chairs/stt/research/publications/phd-theses/thesis_Deladi.pdf | title=Static Friction in Rubber-metal Contacts with Application to Rubber Pad Forming Process | publisher=University of Twente | date=2006 | archive-url=https://web.archive.org/web/20170905101758/https://www.utwente.nl/en/et/ms3/research-chairs/stt/research/publications/phd-theses/thesis_Deladi.pdf |access-date=2017-09-05 |archive-date=2017-09-05 ))</ref><ref name="FrictionSurfaceDesign">((cite thesis |author=Ulrika Petterson | url=https://www.diva-portal.org/smash/get/diva2:166578/FULLTEXT01.pdf | title=Surface design for High and Low friction | publisher=University of Uppsala | date=2005 | archive-url=https://web.archive.org/web/20170905100405/https://www.diva-portal.org/smash/get/diva2:166578/FULLTEXT01.pdf |access-date=2017-09-05 |archive-date=2017-09-05 ))</ref>
These can be combined by other mechanisms such as energy dissipation in viscous materials or adhesion.

The above requirements impose many design challenges. To operate well on vibrating surfaces, pads are usually made of soft, rubber like materials with very high friction coefficients. Designs seek to achieve certain level of adhesion (e.g. for use on vertical or very steep surfaces) without compromising easy detachment and continuous use without residual left-over. Some applications (such as sticking smartphones or tablets to vertical surface) require high degree of reliability, which is difficult to achieve without strong sticking to the surfaces.

Various innovative approaches and engineered materials are used to keep in line with requirements. Some designs apply sticking based on vacuum in addition to high friction and softness (see e.g. [[Microsuction tape|micro-suction tapes]]).<ref name=MicrosuctionTapeForbes>((cite news|last1=Ozcanli|first1=Osman Can|title=Looking For The Next Post-It|url=https://www.forbes.com/2010/03/16/post-it-3m-technology-ecotech-microsuction.html|work=Forbes|date=March 16, 2010 |archive-url=https://web.archive.org/web/20170908190959/https://www.forbes.com/2010/03/16/post-it-3m-technology-ecotech-microsuction.html |archive-date=2017-09-08 |url-status=live|access-date=2017-09-02 ))</ref>
Other development includes designs that find inspiration in nature, especially in animals that are able to climb walls and ceilings such as geckos, 
<ref name="GeckoSelfCleaning">((cite journal |author=Quan Xu, Yiyang Wan, Travis Shihao Hu, Tony X. Liu, Dashuai Tao, Peter H. Niewiarowski, Yu Tian, Yue Liu, Liming Dai, Yanqing Yang & Zhenhai Xia | title=Robust self-cleaning and micromanipulation capabilities of gecko spatulae and their bio-mimics | journal=Nature Communications | date=20 November 2015 |volume=6 |page=8949 |doi=10.1038/ncomms9949 |pmid=26584513 |pmc=4673831 |bibcode=2015NatCo...6.8949X ))</ref>
<ref name="GeckoSubstrateModulus">((cite journal |author=Mena R. Klittich, Michael C. Wilson, Craig Bernard, Rochelle M. Rodrigo, Austin J. Keith, Peter H. Niewiarowski & Ali Dhinojwala | title=Influence of substrate modulus on gecko adhesion |journal=Scientific Reports | publisher=Nature | date=13 March 2017 |volume=7 |page=43647 |doi=10.1038/srep43647 |pmid=28287647 |pmc=5347379 |bibcode=2017NatSR...743647K ))</ref>
<ref name="GeckoTape">((cite web |url=https://web.stanford.edu/group/mota/education/Physics%2087N%20Final%20Projects/Group%20Gamma/gecko.htm | title=Gecko Tape | publisher=University of Stanford | archive-url=https://web.archive.org/web/20170905103945/https://web.stanford.edu/group/mota/education/Physics%2087N%20Final%20Projects/Group%20Gamma/gecko.htm |access-date=2017-09-05 |archive-date=2017-09-05 ))</ref>
<ref name="GeckoTapeBBC">((cite news |author=Richard Black  |url=http://news.bbc.co.uk/1/hi/sci/tech/2953852.stm | title=Gecko inspires sticky tape | publisher=BBC | date=June 1, 2003 | archive-url=https://web.archive.org/web/20170905104826/http://news.bbc.co.uk/1/hi/sci/tech/2953852.stm |access-date=2017-09-05 |archive-date=2017-09-05 ))</ref>
<ref name="GeckoMicroadhesive">((cite journal |author=A. K. GEIM, S. V. DUBONOS1, I. V. GRIGORIEVA, K. S. NOVOSELOV, A. A. ZHUKOV and S. YU. SHAPOVAL |url=http://www.condmat.physics.manchester.ac.uk/pdf/mesoscopic/publications/geckotape/Naturemat_2003.pdf | title=Microfabricated adhesive mimicking gecko foot-hair |journal=Nature Materials | date=1 June 2003 |volume=2 |issue=7 |pages=461–463 |doi=10.1038/nmat917 |pmid=12776092 |bibcode=2003NatMa...2..461G |s2cid=19995111 | archive-url=https://web.archive.org/web/20170905110455/http://www.condmat.physics.manchester.ac.uk/pdf/mesoscopic/publications/geckotape/Naturemat_2003.pdf |access-date=2017-09-05 |archive-date=2017-09-05 ))</ref>
various species of insects
<ref name="InsectStick">((cite news |url=https://phys.org/news/2014-02-insects-honed-friction.html | title=How stick insects honed friction to grip without sticking | work=Phys.org News | publisher=Phys.org | date=February 19, 2014 | archive-url=https://web.archive.org/web/20170905103415/https://phys.org/news/2014-02-insects-honed-friction.html |access-date=2017-09-05 |archive-date=2017-09-05 ))</ref>
, tree frogs
<ref name="FrogFeet">((cite news |url=https://phys.org/news/2011-07-frog-feet-sticky-problem.html  | title=Frog feet could solve a sticky problem | work=Phys.org News | publisher=Phys.org | date=July 3, 2011 |access-date=2017-09-05 ))</ref>
, or chameleons.<ref name="ChameleonFeet">((cite journal |author=Marlene Spinner, Guido Westhoff and Stanislav N. Gorb | title=Subdigital setae of chameleon feet: Friction-enhancing microstructures for a wide range of substrate roughness |journal=Scientific Reports |year=2014 |volume=4 |page=5481 | publisher=Nature |doi=10.1038/srep05481 |pmid=24970387 |pmc=4073164 |bibcode=2014NatSR...4E5481S ))</ref>

Mechanisms of insects that can scale walls and ceilings help understand how to produce surfaces with extremely high friction that don't exhibit too much sticking for practical applications.<ref name="InsectStick" /> Abilities of geckos have been intensively studied to find out how sticking of vertical walls or ceilings can be joined with ability of easy and quick detachment that enables geckos quick movement.<ref name="GeckoSelfCleaning" /> It has been discovered that [[Van der Waals force]] rather than friction or adhesion is the most important mechanism behind gecko's abilities.<ref name="GeckoSubstrateModulus" /> This implies that artificial designs mimicking geckos' feet should rely on maximizing surface contact between object and the pad, which is less practical in some situations, for example when pads are used on non-flat surfaces or when objects put on the pad don't have flat surfaces. On the other hand, mechanisms in geckos' feet help design materials with reliable sticking and easy detachment at the same time.<ref name="GeckoSelfCleaning" /> Mechanisms used in geckos, tree frogs and some insects were also studied for self-cleaning ability, which would enable artificial materials retain the ability to prevent sliding after continuous use in dirty environments.<ref name="InsectStick" /><ref name="FrogFeet" />

==See also==
*[[Microsuction tape]]
*[[Suction cup]]
*[[Adhesive tape]]
*[[Sticky mat]]
*[[Hook and loop fastener]]
*[[Friction]]
*[[Contact mechanics]]
*[[Frictional contact mechanics]]

==References==
((reflist))

[[Category:Friction]]
[[Category:Safety equipment]]

Pages transcluded onto the current version of this page (help):

Sticky pad (edit)
Template:About (view source) (template editor protected)
Template:Ambox (view source) (template editor protected)
Template:Cite journal (view source) (protected)
Template:Cite news (view source) (protected)
Template:Cite thesis (view source) (template editor protected)
Template:Cite web (view source) (protected)
Template:Find sources mainspace (view source) (template editor protected)
Template:Main other (view source) (protected)
Template:More citations needed (view source) (template editor protected)
Template:Refimprove (view source) (template editor protected)
Template:Reflist (view source) (protected)
Template:Reflist/styles.css (view source) (protected)
Module:About (view source) (template editor protected)
Module:Arguments (view source) (protected)
Module:Category handler (view source) (protected)
Module:Category handler/blacklist (view source) (protected)
Module:Category handler/config (view source) (protected)
Module:Category handler/data (view source) (protected)
Module:Category handler/shared (view source) (protected)
Module:Check for unknown parameters (view source) (protected)
Module:Citation/CS1 (view source) (protected)
Module:Citation/CS1/COinS (view source) (protected)
Module:Citation/CS1/Configuration (view source) (protected)
Module:Citation/CS1/Date validation (view source) (protected)
Module:Citation/CS1/Identifiers (view source) (protected)
Module:Citation/CS1/Utilities (view source) (protected)
Module:Citation/CS1/Whitelist (view source) (protected)
Module:Citation/CS1/styles.css (view source) (protected)
Module:Disambiguation/templates (view source) (protected)
Module:Find sources (view source) (template editor protected)
Module:Find sources/config (view source) (template editor protected)
Module:Find sources/links (view source) (template editor protected)
Module:Find sources/templates/Find sources mainspace (view source) (template editor protected)
Module:Format link (view source) (template editor protected)
Module:Hatnote (view source) (template editor protected)
Module:Hatnote/styles.css (view source) (template editor protected)
Module:Hatnote list (view source) (template editor protected)
Module:Message box (view source) (protected)
Module:Message box/ambox.css (view source) (protected)
Module:Message box/configuration (view source) (protected)
Module:Namespace detect/config (view source) (protected)
Module:Namespace detect/data (view source) (protected)
Module:Pagetype (view source) (protected)
Module:Pagetype/config (view source) (protected)
Module:Pagetype/disambiguation (view source) (protected)
Module:Pagetype/setindex (view source) (protected)
Module:Pagetype/softredirect (view source) (protected)
Module:Unsubst (view source) (protected)
Module:Wikitext Parsing (view source) (protected)
Module:Yesno (view source) (protected)

Return to Sticky pad.

Retrieved from "https://en.wikipedia.org/wiki/Sticky_pad"