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An electronic cigarette is a battery-powered vaporizer which provides a flavor and feel similar to tobacco smoking, but there are differences. A noticeable difference between the traditional cigarette and the e-cigarette is sense of touch. The user inhales an aerosol, commonly called vapor, rather than cigarette smoke. Once the user inhales, the airflow passes through a pressure sensor which activates the heating element that atomizes the liquid solution inside the cartridge into vapor. Other e-cigarettes have a push-button switch to turn on the device manually. E-cigarettes are generally cylindrical, with many variations. Some e-cigarettes look like traditional cigarettes, but others do not. There are three main categories of e-cigarettes: cigalikes, looking like cigarettes, either disposable or with rechargeable batteries and replaceable nicotine cartridges; tank systems, bigger than cigalikes with refillable liquid tanks; and mods, assembled from basic parts or by altering existing products. All types except disposable cigalikes use a rechargeable battery, which tends to be the largest component of an e-cigarette. E-cigarettes that resemble pens or USB memory sticks are also sold for those who may want to use the device unobtrusively.

First generation e-cigarettes tend to look like tobacco cigarettes and so are called "cigalikes". Second generation devices tend to be used by more experienced users. Third generation devices include mechanical mods and variable voltage devices. A fourth generation e-cigarette became available in the U.S. in 2014. As the e-cigarette industry is growing, new products are quickly developed and brought to market. The devices contain a rechargeable battery, which tends to be the largest component of an e-cigarette.

The main parts of an e-cigarette are a cartridge, an atomizer, a vaporization chamber, and a power source. An atomizer comprises a small heating element that vaporizes e-liquid and a wicking material that draws liquid onto the coil. A "cartomizer" (a portmanteau of cartridge and atomizer) or "carto" consists of an atomizer surrounded by a liquid-soaked poly-foam that acts as an e-liquid holder. Clearomizers or "clearos", not unlike cartotanks, use a clear tank in which an atomizer is inserted. A rebuildable atomizer or an RBA is an atomizer that allows the user to assemble or "build" the wick and coil themselves instead of replacing them with off-the-shelf atomizer "heads".

The main ingredients in the e-liquid usually are propylene glycol, glycerin, water, nicotine, and flavorings. The e-liquid is heated to a temperature of about 55 °C within the e-cigarette to create an aerosolized vapor. There is a vast array of e-liquids available. The liquid typically contains 95% propylene glycol and glycerin. E-liquids are also sold without propylene glycol, or without nicotine. Surveys demonstrate that 97% of e-cigarette users use products that contain nicotine. Some are sold without flavors. The flavorings may be natural or artificial. About 8,000 flavors exist as of 2014.

Construction

E-cigarettes are generally roughly cylindrical, with many variations: pen-styles, tank-styles etc. Some e-cigarettes look like traditional cigarettes, but others do not. There are three main categories of e-cigarettes: cigalikes, looking like cigarettes; tank systems, bigger than cigalikes with refillable liquid tanks; and mods, assembled from basic parts or by altering existing products. E-cigarettes that resemble pens or USB memory sticks are also sold for those who may want to use the device unobtrusively. First generation e-cigarettes usually simulated smoking implements, such as cigarettes or cigars, in their use and appearance. Later-generation e-cigarettes often called mods, PVs (personal vaporizer) or APVs (advanced personal vaporizer) have an increased nicotine-dispersal performance, house higher capacity batteries, and come in various shapes such as metal tubes and boxes. A growing subclass of vapers called cloud-chasers configure their atomizers to produce large amounts of vapor by using low-resistance heating coils. This practice is known as cloud-chasing. Many e-cigarettes are made of standardized replaceable parts that are interchangeable between brands. Common components include a liquid delivery and container system like tanks or cartomizers, an atomizer, and a power source. A wide array of component combinations exists. Many e-cigarettes are sold with a USB charger. The main parts for most e-cigarettes include an aerosol generator, flow sensor, battery, and a liquid storage chamber. They contain silver, steel, metals, ceramics, plastics, fibers, aluminum, rubber and spume, and lithium batteries. As the e-cigarette industry is growing, new products are quickly developed and brought to market.

E-cigarettes are sold in disposable or reusable variants. Disposable e-cigarettes are discarded once the liquid in the cartridge is used up, while rechargeable e-cigarettes may be used indefinitely. A disposable e-cigarette lasts to around 400 puffs. Reusable e-cigarettes are refilled by hand or exchanged for pre-filled cartridges, and general cleaning is required. A wide range of disposable and reusable e-cigarettes exist. Disposable e-cigarettes are offered for a few dollars, and higher-priced reusable e-cigarettes involve an up-front investment for a starter kit. Once the user inhales, the airflow activates the sensor, and then the heating element atomizes the liquid solution inside the cartridge into vapor. Other e-cigarettes have a manual push-button switch to turn on the device. Some e-cigarettes have a LED at the tip to resemble the glow of burning tobacco. The LED may also indicate the battery status.

E-cigarettes provide a flavor and feel similar to tobacco smoking, but there are differences. A noticeable difference between the traditional cigarette and the e-cigarette is sense of touch. A traditional cigarette is smooth and light, while an e-cigarette can be rigid and comparably bulky. Since e-cigarettes are more complex than traditional cigarettes, a learning curve is needed to use them correctly. E-cigarettes simulate some of the traditions associated with smoking activities such as the hand-to-mouth motion of smoking. Compared to traditional cigarettes, the general e-cigarette puff time is much longer, and to use e-cigarettes a more forceful suction is required. The volume of vapor created by e-cigarettes declines with vaping. Thus, to create the same volume of vapor increasing puff force is needed. Many e-cigarette versions include a voltage potentiometer that lets the user adjust the volume of vapor created.

Device generations

First generation

First generation e-cigarettes tend to look like tobacco cigarettes and so are called "cigalikes". They may be a single unit comprising a battery, coil and filling saturated with e-juice in a single tube to be used and discarded after the battery or e-liquid is depleted. They may also be a reusable device with a battery and cartridge called a cartomizer. The cartomizer cartridge can be separated from the battery so the battery can be charged and the empty cartomizer replaced when the e-juice runs out. The battery may contain an electronic airflow sensor triggered by drawing breath through the device. Other models use a power button that must be held during operation. An LED in the power button or on the end of the device may also show when the device is firing. Charging is commonly accomplished with a USB charger that attaches to the battery. Some manufacturers also have a cigarette pack-shaped portable charging case (PCC), which contains a larger battery capable of recharging the individual e-cigarette batteries. Reusable devices can come in a kit that contains a battery, a charger, and at least one cartridge. Varying nicotine concentrations are available and nicotine delivery to the user also varies based on different cartomizers, e-juice mixtures, and power supplied by the battery. These manufacturing differences, creates differences in the way e-cigarettes convert the liquid solution to an aerosol, and thus the levels of ingredients, that are delivered to the user and the surrounding air for any given liquid.

Second generation

Second generation devices tend to be used by more experienced users. These devices are larger overall and look less like tobacco cigarettes. They have larger non removable batteries with higher capacity. They are charged with a USB charger that attaches to the battery with a threaded connection. Some batteries have a "passthrough" feature so they can be used even while they are charging. Second generation devices are usually two part devices with a tank and a separate battery. Second generation e-cigarettes commonly use a tank or a "clearomizer". The clearomizer tanks are meant to be refilled with e-juice. Because the tank can be refilled and the battery recharged, the cost of operation is lower. They can also be used with cartomizers which are pre-filled. Some cheaper batteries use a microphone that detects the vibration of the air passing through to activate the device when the user inhales. Other batteries like the eGo style can use a integrated circuit with a button for manual activation and battery status indicated on the included LED. The power button can also used to turn the battery off and on so it is not activated accidentally. These batteries may also have adjustable power or voltage.

Third generation

The third generation includes mechanical mods and variable voltage devices. The battery sections are commonly called "mods," referencing their past when user modification was coommon. They are commonly cylindrical or box-shaped, and the common matrials used are wood, aluminium, stainless steel, or brass. A larger "box mod" can hold bigger and sometimes multiple batteries. Mechanical mods and variable devices use larger batteries than those found in previous generations. Common battery sizes used are 18350, 18490, 18500 and 18650. The battery is often removable. This allows the user to change to a new battery when one is depleted. Mechanical mods do not contain integrated circuits. The battery must be removed and charged with an external charger. Variable devices often have a USB connector for recharging and some can be used while charging which is referred to as a "passthrough" feature. The power section may include additional options such as screen readout, support for a wide range of internal batteries, and compatibility with different types of atomizers. Third generation devices can use rebuildable atomizers that can utilize different wicking materials. These rebuildable devices use handmade coils that can be installed in the atomizer to increase vapor production. Hardware in this generation is sometimes modified to increase power or flavor. The larger battery sections used also allow larger tanks to be attached that can hold more e-liquid.

Fourth generation

A fourth generation e-cigarette became available in the U.S. in 2014. Fourth generation e-cigarettes can be made from stainless steel and pyrex glass, and contain very little plastics. Included in the fourth generation are Sub ohm tanks and temperature control devices.

Atomizer

An atomizer comprises a small heating element that vaporizes e-liquid and a wicking material that draws liquid onto the coil. Along with a battery and e-liquid the atomizer is the main component of every personal vaporizer. A small length of resistance wire is coiled around the wicking material and connected to the integrated circuit, or in the case of mechanical devices, the atomizer is connected directly to the battery through either a 510, 808, or ego threaded connector. 510 being the most common. When activated, the resistance wire coil heats up and vaporizes the liquid, which is then inhaled by the user.

The electrical resistance of the coil, the voltage output of the device, the airflow of the atomizer and the efficiency of the wick all affect the vapor coming from the atomizer. They also affect the vapor quantity or volume yielded.

Atomizer coils made of kanthal usually have resistances that vary from 0.4Ω (ohms) to 2.8Ω. Coils of lower ohms have increased vapor production but could risk fire and dangerous battery failures if the user is not knowledgeable enough about electrical principles and how they relate to battery safety.

Wicking materials vary from one atomizer to another. "Rebuildable" or "do it yourself" atomizers can use silica, cotton, rayon, porous ceramic, hemp, bamboo yarn, oxidized stainless steel mesh and even wire rope cables as wicking materials.

Cartomizers

A "cartomizer" (a portmanteau of cartridge and atomizer) or "carto" consists of an atomizer surrounded by a liquid-soaked poly-foam that acts as an e-liquid holder. They can have up to 3 coils and each coil will increase vapor production. The cartomizer is usually discarded when the e-liquid starts to taste burnt, which usually happens when the e-cigarette is activated with a dry coil or when the cartomizer gets consistently flooded (gurgling) because of sedimentation of the wick. Most cartomizers are refillable even if not advertised as such.

Cartomizers can be used on their own or in conjunction with a tank that allows more e-liquid capacity. The portmanteau word "cartotank" has been coined for this. When used in a tank, the cartomizer is inserted in a plastic, glass or metal tube and holes or slots have to be punched on the sides of the cartomizer so liquid can reach the coil.

Clearomizers

Clearomizers or "clearos", not unlike cartotanks, use a clear tank in which an atomizer is inserted. There are different wicking systems used inside clearomizers. Some rely on gravity to bring the e-liquid to the wick and coil assembly (bottom coil clearomizers for example) and others rely on capillary action or to some degree the user agitating the e-liquid while handling the clearomizer (top coil clearomizers). The coil and wicks are typically inside a prefabricated assembly or "head" that is replaceable by the user.

Present day clearomizers often have adjustable air flow control. Tanks can be plastic or glass. Some flavors of e-juice have been known to damage plastic clearomizer tanks.

Rebuildable atomizers

A rebuildable atomizer or an RBA is an atomizer that allows the user to assemble or "build" the wick and coil themselves instead of replacing them with off-the-shelf atomizer "heads". They are generally considered advanced devices. They also allow the user to build atomizers at any desired electrical resistance.

These atomizers are divided into two main categories; rebuildable tank atomizers (RTAs) and rebuildable dripping atomizers (RDAs),

Rebuildable tank atomizers (RTAs) They have a tank to hold liquid that is absorbed by the wick. They can hold up to 4ml of e-liquid. The tank can be either plastic, glass, or metal. One form of tank atomizers was the Genesis style atomizers. They can use ceramic wicks, stainless steel mesh or rope for wicking material. The steel wick must be oxidized to prevent arcing of the coil. Another type is the Sub ohm tank. These tanks have rebuildabe or RBA kits. They can also use coilheads of 0.2ohm 0.4hom and 0.5ohm.

Rebuildable dripping atomizers (RDAs) are atomizers where the e-juice is dripped directly onto the coil and wick. The common nicotine strength of e-liquids used in RDA's is 3 mg and 6 mg. Liquids used in RDA's tend to have more vegetable glycerin. They typically consist only of an atomizer "building deck", commonly with three posts with holes drilled in them, which can accept one or more coils. The user needs to manually keep the atomizer wet by dripping liquid on the bare wick and coil assembly, hence their name. RDA's can also use nickel wire or titanium wire for temperature control.

Power

Variable power and voltage devices

The devices contain a rechargeable battery, which tends to be the largest component of an e-cigarette. Many devices feature variable power and/or variable voltage and contain a built-in electronic chip allowing the user to adjust the power applied to the heating element. They are often rectangular but can also be cylindrical. They usually have a screen to show information such as voltage, power, and resistance of the coil.

Variable devices are variable wattage, variable voltage or both. Variable wattage devices allow the user to adjust the power applied to the coil and change the amount of vapor. The devices monitor the coil's resistance and automatically adjust the voltage to apply the user-specified level of power to the coil. To adjust the settings, the user presses buttons or rotates a dial to turn the power up or down. The amount of power applied to the coil affects the heat produced, thus changing the vapor output. Greater heat from the coil increases vapor production. Some of these devices include additional settings through their menu system such as: atomizer resistance meter, remaining battery voltage, puff counter, and power-off or lock.

Temperature control devices

Temperature control devices allow the user to set the temperature. The temperature can be adjusted in Celsius or Fahrenheit. Temperature control is used with coils of non resistance wire. Nickel or titanium are the common non resistance metals used for wire in temperature control. The DNA40 and SX350J are common control boards used in temperature control devices. Temperature control can stop dry wicks from burning, or e-liquid overheating.

Mechanical devices

Mechanical PVs or mechanical "mods", often called "mechs", are devices without integrated circuits, electronic battery protection, or voltage regulation. They are activated by a switch. They rely on the natural voltage output of the battery and the metal that the mod is made of often is used as part of the circuit itself.

The term "mod" was originally used instead of "modification". Users would modify existing hardware to get better performance, and as an alternative to the e-cigarettes that looked like traditional cigarettes. Users would also modify other unrelated items like flashlights as battery compartments to power atomizers. The word mod is often used to describe most personal vaporizers.

Mechanical PVs have no power regulation and are unprotected. Because of this ensuring that the battery does not over-discharge and that the resistance of the atomizer requires amperage within the safety limits of the battery is the responsibility of the user.

E-liquid

E-liquid, e-fluid, or e-juice is the liquid that vaporizes when heated to a temperature of about 55 °C. There is a vast array of e-liquids available. The main ingredients are propylene glycol, glycerin, water, nicotine, and flavorings; and optionally, tobacco-derived nicotine. The liquid typically contains 95% propylene glycol and glycerin. The most regularly used base carrier chemical is propylene glycol with or without glycerin. E-liquid containing glycerin and water made without propylene glycol is also sold. The nicotine in e-liquid may be prepared using a United States Pharmacopeia-grade nicotine, a tobacco plant extract, tobacco dust or a synthetic nicotine. Most e-cigarette liquids contain nicotine, but the level of nicotine varies depending on user-preference and manufacturers. E-liquid without nicotine is also available. Although some e-juice is nicotine-free, surveys demonstrate that 97% of e-cigarette users use products that contain nicotine. A 2015 review suggests that 1% of users use liquid without nicotine.

The solution is often sold in bottles or pre-filled disposable cartridges, or as a kit for consumers to make their own e-juices. Components are also available to modify or boost their flavor or nicotine strength. Pre-made e-liquids are made with various tobacco, fruit, and other flavors, as well as variable nicotine concentrations (including nicotine-free versions). The standard notation "mg/ml" is often used on labels to denote nicotine concentration, and is sometimes shortened to "mg". In surveys of regular e-cigarette users, the most popular e-liquids have a nicotine content of 18 mg/ml, and the preferred flavors were largely tobacco, mint and fruit. A cartridge may contain 0 to 20 mg of nicotine. A refill bottle can contain up to 1 g of nicotine. Some liquids without flavoring is also sold. The flavorings may be natural or artificial. About 8,000 flavors exist as of 2014. A user does not normally consume a whole cartridge in a single session. Most e-liquids are produced by a few manufacturers in China, the US and Europe.

References

1. ^ Caponnetto, Pasquale; Campagna, Davide; Papale, Gabriella; Russo, Cristina; Polosa, Riccardo (2012). "The emerging phenomenon of electronic cigarettes". Expert Review of Respiratory Medicine. 6 (1): 63–74. doi:10.1586/ers.11.92. ISSN 1747-6348. PMID 22283580.
2. Cheng, T. (2014). "Chemical evaluation of electronic cigarettes". Tobacco Control. 23 (Supplement 2): ii11–ii17. doi:10.1136/tobaccocontrol-2013-051482. ISSN 0964-4563. PMC 3995255. PMID 24732157.
3. ^ "Electronic cigarettes: patterns of use, health effects, use in smoking cessation and regulatory issues". Tob Induc Dis. 12 (1): 21. 2014. doi:10.1186/1617-9625-12-21. PMC 4350653. PMID 25745382. {{cite journal}}: Unknown parameter |authors= ignored (help)CS1 maint: unflagged free DOI (link)
4. ^ McQueen, Amy; Tower, Stephanie; Sumner, Walton (2011). "Interviews with "vapers": implications for future research with electronic cigarettes". Nicotine & Tobacco Research. 13 (9): 860–7. doi:10.1093/ntr/ntr088. PMID 21571692.
5. ^ Grana, R; Benowitz, N; Glantz, SA (13 May 2014). "E-cigarettes: a scientific review". Circulation. 129 (19): 1972–86. doi:10.1161/circulationaha.114.007667. PMC 4018182. PMID 24821826.
6. ^ Pepper, J. K.; Brewer, N. T. (2013). "Electronic nicotine delivery system (electronic cigarette) awareness, use, reactions and beliefs: a systematic review". Tobacco Control. 23 (5): 375–384. doi:10.1136/tobaccocontrol-2013-051122. ISSN 0964-4563. PMID 24259045.
7. ^ McNeill, A, SC (2015). "E - cigarettes: an evidence update A report commissioned by Public Health England" (PDF). www.gov.uk. UK: Public Health England. p. 15. Retrieved 20 August 2015.{{cite web}}: CS1 maint: multiple names: authors list (link)
8. Bhatnagar, A.; Whitsel, L. P.; Ribisl, K. M.; Bullen, C.; Chaloupka, F.; Piano, M. R.; Robertson, R. M.; McAuley, T.; Goff, D.; Benowitz, N. (24 August 2014). "Electronic Cigarettes: A Policy Statement From the American Heart Association". Circulation. 130 (16): 1418–1436. doi:10.1161/CIR.0000000000000107. PMID 25156991.
9. ^ Rom, Oren; Pecorelli, Alessandra; Valacchi, Giuseppe; Reznick, Abraham Z. (2014). "Are E-cigarettes a safe and good alternative to cigarette smoking?". Annals of the New York Academy of Sciences: n/a–n/a. doi:10.1111/nyas.12609. ISSN 0077-8923. PMID 25557889.
10. ^ Schraufnagel, Dean E.; Blasi, Francesco; Drummond, M. Bradley; Lam, David C. L.; Latif, Ehsan; Rosen, Mark J.; Sansores, Raul; Van Zyl-Smit, Richard (2014). "Electronic Cigarettes. A Position Statement of the Forum of International Respiratory Societies". American Journal of Respiratory and Critical Care Medicine. 190 (6): 611–618. doi:10.1164/rccm.201407-1198PP. ISSN 1073-449X. PMID 25006874.
11. ^ Farsalinos KE, Spyrou A, Tsimopoulou K, Stefopoulos C, Romagna G, Voudris V (2014). "Nicotine absorption from electronic cigarette use: Comparison between first and new-generation devices". Scientific Reports. 4: 4133. doi:10.1038/srep04133. PMC 3935206. PMID 24569565.{{cite journal}}: CS1 maint: multiple names: authors list (link)
12. ^ Hayden McRobbie (2014). Electronic cigarettes "Electronic cigarettes". National Centre for Smoking Cessation and Training. {{cite web}}: Check |url= value (help)
13. ^ Brandon, T. H.; Goniewicz, M. L.; Hanna, N. H.; Hatsukami, D. K.; Herbst, R. S.; Hobin, J. A.; Ostroff, J. S.; Shields, P. G.; Toll, B. A.; Tyne, C. A.; Viswanath, K.; Warren, G. W. (2015). "Electronic Nicotine Delivery Systems: A Policy Statement from the American Association for Cancer Research and the American Society of Clinical Oncology". Clinical Cancer Research. 21: 514–525. doi:10.1158/1078-0432.CCR-14-2544. ISSN 1078-0432. PMID 25557889.
14. ^ Glasser, A. M.; Cobb, C. O.; Teplitskaya, L.; Ganz, O.; Katz, L.; Rose, S. W.; Feirman, S.; Villanti, A. C. (2015). "Electronic nicotine delivery devices, and their impact on health and patterns of tobacco use: a systematic review protocol". BMJ Open. 5 (4): e007688–e007688. doi:10.1136/bmjopen-2015-007688. ISSN 2044-6055. PMID 25926149.
15. ^ Cassidy, Susan (26 October 2011). "HowStuffWorks "How Electronic Cigarettes Work"". Science.howstuffworks.com. Retrieved 27 August 2013.
16. ^ "Vaper Talk – The Vaper's Glossary". Spinfuel Magizine. 5 July 2013. Retrieved 18 November 2014.
17. ^ Greg Olson (29 January 2014). "Smoking going electronic". Thetelegraph.com. Retrieved 6 February 2014.
18. ^ Caponnetto P; Russo C; Bruno CM; Alamo A; Amaradio MD; Polosa R. (Mar 2013). "Electronic cigarette: a possible substitute for cigarette dependence". Monaldi archives for chest disease. 79 (1): 12–19. PMID 23741941.
19. ^ Oh, Anne Y.; Kacker, Ashutosh (December 2014). "Do electronic cigarettes impart a lower potential disease burden than conventional tobacco cigarettes?: Review on e-cigarette vapor versus tobacco smoke". The Laryngoscope. 124 (12): 2702–2706. doi:10.1002/lary.24750. PMID 25302452.
20. ^ Bekki, Kanae; Uchiyama, Shigehisa; Ohta, Kazushi; Inaba, Yohei; Nakagome, Hideki; Kunugita, Naoki (2014). "Carbonyl Compounds Generated from Electronic Cigarettes". International Journal of Environmental Research and Public Health. 11 (11): 11192–11200. doi:10.3390/ijerph111111192. ISSN 1660-4601. PMID 25353061.{{cite journal}}: CS1 maint: unflagged free DOI (link)
21. ^ Jimenez Ruiz, CA; Solano Reina, S; de Granda Orive, JI; Signes-Costa Minaya, J; de Higes Martinez, E; Riesco Miranda, JA; Altet Gómez, N; Lorza Blasco, JJ; Barrueco Ferrero, M; de Lucas Ramos, P (August 2014). "The electronic cigarette. Official statement of the Spanish Society of Pneumology and Thoracic Surgery (SEPAR) on the efficacy, safety and regulation of electronic cigarettes". Archivos de bronconeumologia. 50 (8): 362–7. doi:10.1016/j.arbr.2014.06.007. PMID 24684764.
22. ^ McRobbie, Hayden; Bullen, Chris; Hartmann-Boyce, Jamie; Hajek, Peter; McRobbie, Hayden (2014). "Electronic cigarettes for smoking cessation and reduction". The Cochrane Library. 12: CD010216. doi:10.1002/14651858.CD010216.pub2. PMID 25515689.
23. ^ Bertholon, J.F.; Becquemin, M.H.; Annesi-Maesano, I.; Dautzenberg, B. (2013). "Electronic Cigarettes: A Short Review". Respiration. 86: 433–8. doi:10.1159/000353253. ISSN 1423-0356. PMID 24080743.
24. ^ "Backgrounder on WHO report on regulation of e-cigarettes and similar products". 26 August 2014. Retrieved 2 June 2015.
25. Mary Plass (29 January 2014). "The Cloud Chasers". Vape News Magazine.
26. Dominique Mosbergen (5 August 2014). "This Man Is An Athlete In The Sport Of 'Cloud Chasing'". The Huffington Post. {{cite news}}: Italic or bold markup not allowed in: |publisher= (help)
27. Jérôme Cartegini (27 May 2014). "A la découverte de la cigarette électronique". Clubic.
28. ^ Couts, Andrew (13 May 2013). "Inside the world of vapers, the subculture that might save smokers' lives". Digital Trends. Retrieved 20 November 2013.
29. Alex Hern (21 November 2014). "Now e-cigarettes can give you malware". The Guardian. {{cite news}}: Italic or bold markup not allowed in: |publisher= (help)
30. ^ SA, Meo; SA, Al Asiri (2014). "Effects of electronic cigarette smoking on human health" (PDF). Eur Rev Med Pharmacol Sci. 18 (21): 3315–9. PMID 25487945.
31. ^ Ebbert, Jon O.; Agunwamba, Amenah A.; Rutten, Lila J. (2015). "Counseling Patients on the Use of Electronic Cigarettes". Mayo Clinic Proceedings. 90 (1): 128–134. doi:10.1016/j.mayocp.2014.11.004. ISSN 0025-6196. PMID 25572196.
32. Franck, C.; Budlovsky, T.; Windle, S. B.; Filion, K. B.; Eisenberg, M. J. (2014). "Electronic Cigarettes in North America: History, Use, and Implications for Smoking Cessation". Circulation. 129 (19): 1945–1952. doi:10.1161/CIRCULATIONAHA.113.006416. ISSN 0009-7322. PMID 24821825.
33. Oscar Raymundo (27 January 2015). "How to Get Started with E-Cigarettes". The Huntington Post. {{cite news}}: Italic or bold markup not allowed in: |publisher= (help)
34. ^ Orellana-Barrios, Menfil A.; Payne, Drew; Mulkey, Zachary; Nugent, Kenneth (2015). "Electronic cigarettes-a narrative review for clinicians". The American Journal of Medicine. doi:10.1016/j.amjmed.2015.01.033. ISSN 0002-9343. PMID 25731134.
35. Brown, C. J.; Cheng, J. M. (2014). "Electronic cigarettes: product characterisation and design considerations". Tobacco Control. 23 (Supplement 2): ii4–ii10. doi:10.1136/tobaccocontrol-2013-051476. ISSN 0964-4563. PMC 3995271. PMID 24732162.
36. Evans, S. E.; Hoffman, A. C. (2014). "Electronic cigarettes: abuse liability, topography and subjective effects". Tobacco Control. 23 (Supplement 2): ii23–ii29. doi:10.1136/tobaccocontrol-2013-051489. ISSN 0964-4563. PMC 3995256. PMID 24732159.
37. "The skyrocketing popularity of e-cigarettes: A guide". The Week. 20 August 2012. Retrieved 21 November 2014.
38. Tim Stevens. "Thanko's USB-powered Health E-Cigarettes sound healthy". Engagdet. Retrieved 18 November 2014.
39. ^ Terrence O'Brien. "E-Lites electronic cigarette review". Engagdet. Retrieved 18 November 2014.
40. ^ "Vaper Talk – The Vaper's Glossary page 2". Spinfuel Magizine. 5 July 2013. Retrieved 18 November 2014.
41. Farsalinos, K. E.; Polosa, R. (2014). "Safety evaluation and risk assessment of electronic cigarettes as tobacco cigarette substitutes: a systematic review". Therapeutic Advances in Drug Safety. 5 (2): 67–86. doi:10.1177/2042098614524430. ISSN 2042-0986. PMC 4110871. PMID 25083263.
42. ^ "How does the battery work?". How To Vape. Retrieved 3 October 2014.
43. "Joyetech eCom". PC. Ziff Davis. Retrieved 24 November 2014.
44. Daniel Culpan (21 May 2015). "E-cigarettes may only be harmful under 'extreme conditions'". Condé Nast. Retrieved 21 September 2015.
45. ^ Mark Benson (9 January 2015). "Are Third Generation Vaping Devices A Step Too Far?". spinfuel.com. Retrieved 21 September 2015.
46. ^ Michael Grothaus (1 October 2014). "Trading addictions: the inside story of the e-cig modding scene". Engadget.
47. ^ Sean Cooper (23 May 2014). "What you need to know about vaporizers". Engadget.
48. "Understanding MilliAmp Hours". Spinfuel Magazine. 2 January 2014. Retrieved 20 November 2014.
49. "The Vapologist will see you now: Inside New York's first e-cigarette bar". The Week. 11 October 2013. Retrieved 21 November 2014.
50. ^ Eric Larson (25 January 2014). "Pimp My Vape: The Rise of E-Cigarette Hackers". Mashable. Retrieved 22 November 2014.
51. ^ Konstantinos Farsalinos. "Electronic cigarette evolution from the first to fourth generation and beyond" (PDF). gfn.net.co. Global Forum on Nicotine. Retrieved 23 September 2015.
52. ^ John Castle (27 January 2014). "E Cigarettes And Clearomizers". Spinfuel Magazine. Retrieved 21 September 2015.
53. EP application 2614731, Yonghai Li, Zhongli Xu, "An atomizer for electronic cigarette", published 17 July 2013 
54. ^ Joseph C. Martin, III (2 September 2015). "The World of the [RDA] Coil". spinfuel.com. Retrieved 21 September 2015.
55. "Harding Battery Handbook For" (PDF). Harding Energy, Inc.
56. ^ Ngonngo, Nancy. "As e-cigarette stores pop up in Twin Cities, so do the questions". Pioneer Press. Retrieved 20 November 2013.
57. "E-Cig Basics: What Is a Cartomizer?". VapeRanks. Retrieved 19 November 2013.
58. "WHAT'S THE CHOICE BETWEEN A CLEAROMIZER VS ATOMIZER?". Retrieved 6 February 2014.
59. Arvid Sollom. "Sub ohm tanks and the end of non hobbyist building". Vape Magizine. Retrieved 21 September 2015.
60. ^ Lindsay Fox (24 March 2014). "E-Liquid and Tank Safety". ecigarettereviewed.com. Retrieved 6 November 2014.
61. "The Rebuildable Atomizer – An Introduction And Overview". Spinfuel Magazine. 7 January 2013. Retrieved 23 September 2015.
62. "3 steps to rebuilding atomizers". Vapenews Magazine. Vapenews Magazine. Retrieved 21 November 2014.
63. ^ Erick Potter (16 January 2014). "How to prepare a stainless steel wick and wrap a coil for a Genesis style rebuildable atomizer". Vape Magazine. Retrieved 21 September 2015.
64. ^ Julia Hartley-Barnes (17 September 2015). "Vaping with Julia "Sub Ohm Tanks"". Spinfuel Magazine. Retrieved 22 September 2015.
65. ^ Jason Little (13 July 2015). "Guide To Dripping e Liquid". Retrieved 21 September 2015.
66. "Vapor Corp. Launches New Store-in-Store VaporX(R) Retail Concept at Tobacco Plus Convenience Expo in Las Vegas". The Wall Street Journal. 29 January 2014. Retrieved 6 February 2014.
67. "Taking The Mystery Out Of Variable Wattage". Spinfuel Magizine. 28 February 2013. Retrieved 18 November 2014.
68. "JoyeTech eVic Review". Real Electric Cigarettes Reviews.
69. Spinfuel Staff (3 August 2015). "HCigar VT40 Evolv DNA40 Mod". Retrieved 24 September 2015.
70. ^ Tim Hanlon (15 February 2015). "Temperature-controlled e-cigs: The next giant leap in harm reduction of nicotine use?". Gizmag. Retrieved 22 September 2015.
71. ^ Dale Amann (10 February 2014). "Battery Safety and Ohm's Law". onvaping.com. Retrieved 1 October 2014.
72. Weaver, Michael; Breland, Alison; Spindle, Tory; Eissenberg, Thomas (2014). "Electronic Cigarettes". Journal of Addiction Medicine. 8 (4): 234–240. doi:10.1097/ADM.0000000000000043. ISSN 1932-0620. PMID 25089953.
73. Chang, H. (2014). "Research gaps related to the environmental impacts of electronic cigarettes". Tobacco Control. 23 (Supplement 2): ii54–ii58. doi:10.1136/tobaccocontrol-2013-051480. ISSN 0964-4563. PMC 3995274. PMID 24732165.
74. ^ Burstyn, I (9 January 2014). "Peering through the mist: systematic review of what the chemistry of contaminants in electronic cigarettes tells us about health risks". BMC Public Health. 14: 18. doi:10.1186/1471-2458-14-18. PMC 3937158. PMID 24406205.{{cite journal}}: CS1 maint: unflagged free DOI (link)
75. Born, H.; Persky, M.; Kraus, D. H.; Peng, R.; Amin, M. R.; Branski, R. C. (2015). "Electronic Cigarettes: A Primer for Clinicians". Otolaryngology -- Head and Neck Surgery. doi:10.1177/0194599815585752. ISSN 0194-5998. PMID 26002957.
76. "E-liquid Mixing Guide – a Guide to DIY Mixing". ecigarettemag.com. Retrieved 10 November 2014.
77. Murray Laugesen (17 October 2007). "The Ruyan e-cigarette; Technical Information Sheet". Health New Zealand. Retrieved 31 March 2008.
78. ^ Hajek, P; Etter, JF; Benowitz, N; Eissenberg, T; McRobbie, H (31 July 2014). "Electronic cigarettes: review of use, content, safety, effects on smokers and potential for harm and benefit" (PDF). Addiction (Abingdon, England). 109 (11): 1801–10. doi:10.1111/add.12659. PMID 25078252.
79. ^ Cervellin, Gianfranco; Borghi, Loris; Mattiuzzi, Camilla; Meschi, Tiziana; Favaloro, Emmanuel; Lippi, Giuseppe (2013). "E-Cigarettes and Cardiovascular Risk: Beyond Science and Mysticism". Seminars in Thrombosis and Hemostasis. 40 (01): 060–065. doi:10.1055/s-0033-1363468. ISSN 0094-6176. PMID 24343348.

External links

• Media related to Electronic cigarettes at Wikimedia Commons

• Cigarette types
• Chinese inventions
• Smoking cessation
• 2003 introductions
• Electronic cigarettes