Portable Optical Tweezers Kit
Chapter 5: Setup and Adjustment
Rev B, February 15, 2022
Page 25
Chapter 5 Setup and Adjustment
5.1. Assembly
The tweezers will be set up on an MB1224 (MB3060/M) breadboard. Set everything up on
a stable desk or table without any sources of vibration nearby. Further damping, such as
using an isolated optical table, is not necessary. First, unpack the balldriver BD-3/16L (BD-
5ML), the SM1 spanner wrench SPW606, and the hex keys CCHK(/M).
Figure 10 shows the breadboard, and the positions of components to be mounted are
indicated with cap screws and red outlines. Attach the BBH1 breadboard handles to the
edges of the breadboard using four 1/4"-20, 5/8" long (M6 x 16 mm) cap screws with
washers so the assembled tweezers can be moved. Attach the RDF1 rubber breadboard
feet to the underside of the breadboard at the positions indicated by the red stars in the
diagram below using four 1/4"-20, 1/2" long (M6 x 12 mm) cap screws without washers.
Use the threaded hole in the breadboard and not the counterbored holes.
Positions of Components on the Breadboard
Teaching Note:
In the previous version of this kit, EDU-OT1(/M), the laser segment had to be assembled
first and the microscope section built step by step by attaching components to the laser
segment. We received feedback that some customers prefer to build the microscope
section first to demonstrate the fact that optical tweezers can be built by coupling a laser
into an existing microscope.
For this kit, we changed some parts so the microscope and the laser assembly can be built
separate from each other. The laser assembly now features variable tube elements that
allow for a retroactive height match between the two assemblies. Therefore, you may
choose your preferred way of teaching & assembling this kit. Either build the microscope
first and attach the cage segment/laser source to it or the other way around. In this manual,
we present the instructions on how to assemble the laser source and cage segment first.
Damping Post
Sample
Positioning
Stage
Clamping Forks
Breadboard
Handle
LED
Controller
Sample Stage Controllers
Laser Driver
Summary of Contents for EDU-OT3
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