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84 3 Optical Tweezers
B1 B1
B1
1
1

2 2
O

B2 B2 B2
a b

Fig. 3.3. Transfer of optically trapped particle from beam to beam

10 mm

Fig. 3.4. Microsphere spatial pattern formation by scanning a focused laser beam
[3.6]. Courtesy of H. Masuhara, Osaka University, Japan

10 mm
10 mm

Fig. 3.5. Micrometer-size particle formation due to light intensity formed by inter-
ference fringe pattern [3.6]. Courtesy of H. Masuhara, Osaka University, Japan