--3D Printing and beyond Desktop manufacture and its application in scientific research

Transcription

1 --3D Printing and beyond Desktop manufacture and its application in scientific research Find me on Linked-in And join the: Song Xu, Ph.D. Sr. Application scientist

2 Desktop Manufacturing Makes It Possible ADesktop manufacture Everybody can build!!

3 Focus of this Presentation Exactly how useful is the 3D printing? What else beyond 3d printing?

4 Recall the greatest inventions of ancient China 2 of 4 are about spread of knowledge Paper printing gun powder compass

5 The trend of civilization is toward the spread of knowledge and technology Recommended reading (The World Is Flat)

6 The trend of civilization is toward the spread of knowledge and technology, which empower individual toward equality Road, highway, aircraft, high speed railway (transportation) Language, literature, printing, phone, computer, internet (information) Workshop, factory,?? (manufacture)

7 The last information revolutions: the industrialization of printing

8 The the next information revolutions: desktop publishing

9 Manufacture is undergoing similar path Initial manufacture are done by the master hands

10 For the past 100 years, mass production industry had little change: standardization, scale and efficiency

11 Then comes the computer numerical controlled machines(cnc) Emerging of computer controlled machines allows small scale production However, the computer controlled machining was very expensive

12 The basics of computer numerical controlled machines Accurate precise step motors replaced capable hands, computer replaced machining procedures

13 There is ongoing revolution in manufacturing: desktop machine that has PC GUI based operation CNC water jet, CNC mill and CNC router

14 Several different kinds of ordinary CNC machines CNC lathe CNC laser

15 CNC 3D printer

16 And the low cost CNC machines $3000 CNC Mill $1000 CNC laser $700 CNC Mill

17 Desk top manufacture is the an ongoing revolution Want to send me a Christmas gift : to me

18 3D printing : precision adding of material

19 3D printing : precision adding of material melting add glue to powder Photo sensitive polymer laser melting

20 The limitation of 3D printing: lack of control of material property

21 Problems of 3D printing

22 Other affordable desktop production tools

23 CNC laser cutting

24 CNC laser cutting and its advantage

25 CNC laser cutting and its advantage: pure 2D design easy to learn

26 CNC laser cutting and its advantage: pure 2D design easy to learn

27 The ultimate 3D machining: 5 axis CNC mill Suggested reading: go to search for 5 Axis CNC art, watch this video

28 The basics to learn desktop manufacturing: start with CAD Group/Presentation Title Agilent Restricted 28

29 The basic of CAD: turn an idea to a precised defined 3D drawing

30 The basic of CAD: turn an idea to a precised defined 3D drawing

31 What is CAM? (computer aided manufacture) CAM turn a designed shape into a machine tool path code (G code)

32 Easy to learn and sometimes free trial amateur CAM

33 CAM turns a designed shape into reality

34 CAM turns a designed shape into reality Step 1:design of 2D vector

35 CAM turns a designed shape into reality Step 2: define the depth of each cutting

36 CAM turns a designed shape into reality Step 3: machine code tool paths generation by computer

37 CAM turns a designed shape into reality Step 3: simulation of machine tool path

38 CAM turns a designed shape into reality Step 3: simulation of machine tool path

39 CAM turns a designed shape into reality Step 4: actual cutting of a 2.5D part

40 CAM design of a part with complicated curved shape

41 CAM design and machining of a thin metal sheet

42 CAM design and machining of a thin metal sheet leads us to the invention of sample holder for soft biological tissue samples

43 CAM design and machining of part made of soft materials

44 CAM design and machining of part made of soft materials

45 See what a desktop CNC mill can do in 30 min

46 My basement factory (total cost $7000)

47 Examples of idea turned into prototype fast! It s great! Or is it?

48 Fixing foil for biological tissue type of sample: Suited to fix very soft sample that are thick inside a dish, or fluid cell

49 Rock type sample fixing foil: Fix a thick sample inside a dish for fluid imaging

50 Hydrophobic flat liquid cell: liquid cell does not have raised edge. Easy to view tip-sample distance. Liquid contained by hydrophobic surface tension

51 Disposable PTFE liquid cell used with microscopic glass slide. PTFE naturally adhere to glass to form a liquid cell

52 Sample holder for contact lens

53 Single piece liquid cell: non-leaking design with bottoms. Can be machined to contain samples such as mica or HOPG. Tight fit cutout hold HOPG in place

54 Square sample liquid cell (for 22mm microscope cover slip)

55 Sample holder for single fiber/hair

56 Liquid cell for fiber/hair type sample: hair sample wrap around the copper frame. A square tension ring push sample against the bottom. Domed cell bottom for fiber sample support. Illumination help tip to locate sample

57 Sample holder for precious metal bead single crystal

58 Side mount sample holder for AFM

59 Stading mount sample holder for AFM

60 LED modulated illumination sample holder: LED power provided by controller, illumination switchable between bottom illumination and side illumination

61 Optical fiber Amplitude modulated illumination sample holder: liquid crystal shutter modulation signal provided by AC controller

62 Sample stage with controlled illumination This sample stage with controlled illumination module consist the following parts: 1. A liquid crystal shutter the controls the light from the light source. The shutter can be programmed to release a set time by sending a square wave, or it can be set to modulated with a sine wave. A regular liquid crystal shutter has a response frequency of 1000 Hz, high speed shutter can perform 10000Hz. 2. Liquid filled optical fiber to guide the light into the sample stage. 3. Two different sample stage design, back illumination for transparent sample and side illumination for nontransparent samples to be used on AFM

63 Laser illuminator with beam splitter and photodetector

64 An electrical chemical cell for 5500 AFM: designed to be used inside a glove box. There is no handling of small parts. Sample stage built using PTFE. All parts are low cost and can be replaced

65 Sample ultrasonic modulation stage 1. Thin film piezo stack oscillating the sample between 200Hz to 6MHz. AFM tip detects the oscillation amplitude and phase of local area, and shows contrast due to difference of sample softness and viscosity. 2. A special small liquid cell can be mounted

66 Sample ultrasonic modulation stage for liquid cell and petridish 1. Thin film piezo stack oscillating the sample between 200Hz to 6MHz. AFM tip detects the oscillation amplitude and phase of local area, and shows contrast due to difference of sample softness and viscosity. 2. Can be used with 35mm dish, and specially designed liquid cell

67 Polymeric gel containing fiber structures imaged with Sample Image size 8 µm 2 modulation topography amplitude phase kh z unpublished work by Lu Lu (Garno Group), LSU, Baton Rouge

68 Fluid heat exchange cooling stage Using heat exchange fluid such as water or ethanol, cooled or heated fluid passively manipulated the temperature of sample cell.

69 Sample holder for parallel magnetization

70 Sample holder for parallel magnetization A gauss magnetic field inside the gap

71 Side view optical microscope for 5500 AFM

72 A few words about Keysight Techology AFM

73 Vacuum popping sample holder Vacuum operated sample holder allow the sealed sample to be transferred from glove box to SEM and the cover is opened by vacuum.

74 Slipper locker 22mm cover slip can be washed and processed in the locker. No glue or screws are used. All parts assembled with friction

75 Slipper rack Sample of various sizes can be loaded and washed, designed to be fit inside a beaker No glue or screws used to assemble Rack made of Acetyl/teflon blend

76 Nano crystal sensor research kit: inter-digited electrode and small volum gas testing chamber

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