PMC

(A) The filament in the BluCig atomizer was chromium (B) and nickel (C). (D) The filament in the BluCig Plus atomizer was of chromium (E), nickel (F), copper (G), and iron (H). (I) The filament in the V2 Cigs 2012 atomizer was chromium (J), nickel (K), and iron (L). (M) The filament in the Tsunami 2.4 atomizer was chromium (N), nickel (O), and iron (P). (Q) The filament in the Clone atomizer was chromium (R), iron (S), and aluminum (T). (U) The thick wire in the Mark Ten atomizer was copper (V) and silver (W). (X) The thick wire in a V2 Cigs 2017 atomizer was nickel (Y). (Z) The thick wire in the Mark Ten XL atomizer was chromium (AA), nickel (BB), and iron (CC). (DD) The filament-to-thick wire joint in the BluCig atomizer was copper (EE). (FF) The filament-to-thick wire joint in the BluCig Plus atomizer was copper (GG) and zinc (HH). (II) The filament-to-thick wire joint in the Kanger T3S atomizer was chromium (JJ) and nickel (KK). Orange arrow = thick wire, blue arrow = filament to thick wire joint.

(A) Scanning electron micrograph (SEM) of brand B solder joint. (B-C) Thin filament (0.15 mm) from brand B containing nickel and chromium. (D-E) Thick wire (0.33 mm) from brand B containing copper coated with silver. (F) SEM of brand C (2011) showing brazed joint between thin and thick wires. (G-H) Thin wire (0.14 mm) from brand C (2011) containing nickel and chromium. (I-J) Thick wire (0.25 mm) from brand C (2011) containing copper coated with tin. (K) SEM of brand C (2013) wires joined by clamp. (L-M) Thin wire (0.14 mm) from brand C (2013) containing nickel and chromium. (N-O) Thick wire (0.35 mm) from brand C (2013) containing copper coated with silver. (P) SEM of brand D showing brass clamp surrounding the thin and thick wires. (Q-R) Thin wire (0.13 mm) coiled around the wick from brand D showing nickel and chromium. (S-T) Thick wire (0.27 mm) from brand D containing copper coated with silver. White arrow = thin wire; Orange arrow = thick wire.

(A) Anatomy of a dissected cartomizer A1. (B) High magnification of the fibers from A1. (C) Anatomy of a dissected cartomizer A2. (D) High magnification of fibers from A2. (E) Micrograph of clamp joining wires in brand A1. (F) Scanning micrograph of clamp between thick wire and thin filament of A1 (2 mm). (G) Micrograph of clamp joining wires in cartomizer A2. (H) Scanning micrograph of clamp between thick wire and thin filament of A2 (2 mm).The thin wire (0.11 mm) from A1 was comprised of nickel (I) and chromium (J). The thick wire (0.25 mm) from A1 was comprised of copper (K) coated with silver (L). The thin wire (0.13 mm) from A2 was comprised of nickel (M) and chromium (N). Thick wire (0.25 mm) from A2 was comprised of copper (O) coated with silver (P). The clamp between the wires of A1 was comprised of mainly copper (Q) and zinc (R) (2 mm). The clamp between wires of A2 was nickel (S), copper (T), and zinc (U) (2 mm). White arrow = thin wire; Orange arrow = thick wire; Red arrow = the joints between the thick and thin wires; Green arrow = joint between wires.

For filaments, JUUL™ (A) was made of nickel (B), iron (C), and chromium (D). SMOK NORD (mesh) (E) was made of iron (F), chromium (G), and titanium (H). SMOK Mico (I) was made of nickel (J), silicon (K), aluminum (L), and iron (M). SMOK Infinix (N) was made of nickel (O), chromium (P), aluminum (Q), and silicon (R). Suorin Drop, Air, and Edge (S) were made of iron (T), chromium (U), nickel (V), molybdenum (W), and silicon (X). Kilo 1K (Y) was made of nickel (Z), chromium (AA), and iron (BB). KWIT Stick (CC) was made of nickel (DD), chromium (EE), and titanium (FF). For filament-wire joints, KWIT Stick (CC) was made of nickel (DD) and chromium (EE). PHIX (GG) was made of nickel (HH), iron (II), and chromium (JJ). SMOK NORD (coil) (KK) was made of nickel (LL), chromium (MM), and iron (NN). Suorin Air (OO) was made of iron (PP), chromium (RR), molybdenum (SS), aluminum (TT), and silicon (UU). Suorin Edge and Drop (VV) were made of chromium (XX) and iron (YY). For connector-wire joints, Suorin Air (OO) was made of a droplet of iron (PP), nickel (QQ), chromium (RR), molybdenum (SS), aluminum (TT), and silicon (UU). Suorin Edge and Drop (VV) were made of nickel (WW), chromium (XX), and iron (YY). Orange arrows in CC–NN show thick wires, while blue arrows show joints between the thick wire and filament.