Micromachines as Tools for Nanotechnology

217 Pages·2003·6.705 MB·English

by  Hiroyuki Fujita (auth.), Professor Hiroyuki Fujita (eds.)

microtechnology and mems
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MicromachinesasToolsforNanotechnology
Editor:H.Fujita
H. Fujita (Ed.)
Micromachines as Tools
for Nanotechnology
With183Figures
1 3
Professor I [ioryuki Pujita
Th(' Univ('rsityofTokyo
[nstitut(' of [ndustrial Sci('nc('
4-6-1 Komaba, Meguro-ku
Tokyo 153-8505, lapan
E-mail: [email protected]
Scrics Edilors:
Professor Dr, I r. l3altcs
ETH Ziirich, Phy~ical Electronics Laboralory
ETI 1 [lo('Jlgg('rb('rg, 1[ 1'T-l [6, 1:\093 llirich, Switz('rland
Profcssor Dr. Dorian Licpmann
Univ('rsity of California, D('partment of Bioengineering
466 Evan~ Hali, #1762, Berkeley, CA 94720-1762, USA
ISSN 1615-8}26
ISBN 978-3-642-62465-0
l.ibrary ofCongn'S~ Calaloging_in_Publicationllata
Fujila, Hiroyuki. 1952-
Mircromachin<?s as lools for nanolechno[og)' III. !'ujita.
p. Cm. __ (Mircol~..:bnology and MEMS)
Inc!udcs bibliographical referen"'. arul index.
ISBN 978-3-642-62465-0 ISBN 978-3-642-55503-9 (eBook)
DOI 10.1007/978-3-642-55503-9
1. NanOI~..:hnology. 2. Mircoek..:tromedanical systcms. 1. Title. II. Seri~'S.
TL74.7.1'852003
620'.5-·dClL 200J045497
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Preface
Nanotechnology is the key technology of the 21st century that promises to
bring dramatic new developments in electronics, communication networks,
biotechnology, medical science and environmental research. The technology
is expected to play an essential part in the life of society in the future. Gov-
ernments around the world fund and promote major projects for research in
nanotechnology while intensive efforts are also made in the private sector.
Nanotechnologydealswithmaterials,structures,anddeviceshavingsizes
of the order of one to hundreds of nanometers. The basic idea lies in as-
sembling atoms and molecules into complex arrangements that have novel
functionality. Whilemothernaturecanbuildallthecomplexorgansofliving
creaturesfromproteinandotherbiomolecules,weareunabletobuildawhole
system from the bottom up. Also a precise understanding of the nanoscopic
world is essential before we can make full use of nano phenomena. I believe
that miniaturized devices and machines play a key role in bridging the gap
between the nanoscopic world and our macroscopic world.
This book describes some of the latest developments in micromachining
technology based on semiconductor processes for integrated circuits and ap-
plied to nanotechnology. The minimum size of transistors has been reduced
to almost 100 nanometers thus it becomes possible to fabricate miniatur-
ized tools having sizes ranging from 10 to 100 nanometers. These tools are
suitable for measuring, observing, handling and controlling nanoscopic ob-
jects, namely DNA molecules, proteins, and semiconductors quantum dots.
Of course, this is just the beginning of such applications. I even envision hy-
brid systems, combining both nanomaterials and micromachined devices, to
be developed within the next five to ten years. I hope you share the excite-
ment of observing a new field of research in creation.
I would like to thank Dr. Claus E. Ascheron for his continuous encour-
agement and Mr. Ryuji Yokokawa for his help in editing chapters.
Tokyo, Japan Hiroyuki Fujita
22 April, 2003
Contents
1 Micromachining Tools for Nanosystems
Hiroyuki Fujita ................................................. 1
1.1 Introduction ............................................... 1
1.2 Bottom–Up and Top–Down Approaches ....................... 2
1.3 Combining the Two Approaches to Nanosystems ............... 4
1.4 Micro- and Nanomachining .................................. 7
1.5 Examples of Micromachined Nanodevices...................... 9
1.5.1 Microprobe Arrays for Ultrahigh Density Data Storage .... 9
1.5.2 Multiple Nanoprobes .................................. 12
1.5.3 Microfluidic Devices Incorporating Biomaterial ........... 14
1.6 Organization of the Book.................................... 17
References ..................................................... 18
2 Microsystems
for Single-Molecule Handling and Modification
Masao Washizu................................................. 21
2.1 Stretch-and-Positioning of DNA.............................. 23
2.2 Molecular Surgery of DNA .................................. 26
2.2.1 Laser Surgery ........................................ 26
2.2.2 Mechanical Surgery with an AFM Tip................... 27
2.2.3 Molecular Surgery with an Enzyme-Labeled Probe ........ 30
2.2.4 Use of Local Temperature Rise ......................... 38
2.3 A Microfabricated Probe for Molecular Surgery ................ 40
2.4 Conclusion ................................................ 42
References ..................................................... 43
3 Manipulation of Single DNA Molecules
Akira Mizuno .................................................. 45
3.1 Manipulation of Giant DNA Molecules ........................ 47
3.1.1 Characteristics of Globular DNA ....................... 48
3.1.2 Suppression of Fragmentation by Globular Transition ..... 49
3.1.3 Laser Trapping of Single DNA.......................... 53
3.2 Stretching a Giant DNA Molecule ............................ 57
3.2.1 Observation and Fixation of Single DNA ................ 57
VIII Contents
3.2.2 Stretching and Fixing DNA
Via the Globule–Coil Transformation.................... 57
3.3 Mapping Stretched Single DNA Molecules ..................... 60
3.3.1 Hybridization with a Probe ............................ 60
3.3.2 Restriction Map ...................................... 63
3.4 Cutting Stretched DNA ..................................... 63
3.4.1 Localizing Enzyme Activity
by Local Temperature Control.......................... 64
3.4.2 Cutting DNA by Controlling Ionic Concentration ......... 68
3.5 Recovery of DNA Fragments................................. 70
3.6 Microreactors for DNA Manipulation ......................... 72
3.6.1 Production of Microreactors in Oil ...................... 73
3.6.2 Manipulation and Fusion of Microreactors ............... 73
3.6.3 Indirect Manipulation of Globular DNA Molecules ........ 74
3.6.4 Chemical Reaction in the W/O Microreactor System ...... 75
3.6.5 PCR Amplification of DNA Fragments .................. 76
3.7 Conclusion ................................................ 78
References ..................................................... 78
4 Near-Field Optics in Biology
Patrick Degenaar, Eiichi Tamiya .................................. 83
4.1 Breaking the Diffraction Barrier.............................. 85
4.2 SNOAM Probe Design ...................................... 87
4.3 SNOAM Configurations ..................................... 90
4.4 Feedback Mechanisms for SNOAM ........................... 92
4.5 SNOAM in Aqueous Environments ........................... 94
4.6 SNOAM System Design ..................................... 95
4.7 Calibration ................................................ 98
4.8 Fluorescence Imaging with SNOAM .......................... 99
4.9 SNOAM Imaging of Fluorescent Beads ........................ 101
4.10 Fluorescence Profiling....................................... 102
4.11 SNOAM Imaging of Chromosomes............................ 103
4.12 SNOAM Imaging of Recombinant Bacterial Cells
Containing a Green Fluorescent Protein Gene.................. 105
4.13 Imaging of Neurons......................................... 108
4.14 Future Development of SNOAM.............................. 111
4.14.1Apertureless SNOAM ................................. 112
4.14.2Vibrational Spectroscopy .............................. 112
4.14.3Competition for SNOAM .............................. 113
4.15 Conclusion ................................................ 113
References ..................................................... 113
Contents IX
5 Atomic Force Microscopy for Imaging Living Organisms:
From DNA to Cell Motion
Tatsuo Ushiki .................................................. 121
5.1 Principles of Atomic Force Microscopy ........................ 121
5.2 Applications in Biology ..................................... 123
5.2.1 Deoxyribonucleic Acid (DNA) and Chromosomes ......... 123
5.2.2 Collagen Molecules and Collagen Fibrils ................. 124
5.2.3 Tissue Sections ....................................... 126
5.2.4 Living Cells and Their Movement....................... 126
5.3 Other SPM Applications in Biology........................... 128
5.4 Conclusion ................................................ 128
References ..................................................... 129
6 Expanding the Field of Application
of Scanning Probe Microscopy
Hideki Kawakatsu............................................... 131
6.1 Nanotribology ............................................. 132
6.1.1 An AFM with Two Optical Levers
for Detecting the Trajectory of the Tip Apex............. 132
6.1.2 Mapping Lateral Tip Vibrations
in Scanning Force Microscopy .......................... 133
6.1.3 Linear Scale Using a Crystal as Scale Reference........... 135
6.2 Control ................................................... 137
6.3 Fabrication ................................................ 139
6.3.1 Fabrication of Nanometric Oscillators
for Scanning Force Microscopy ......................... 139
6.3.2 Fabrication of Nanometric Parallel Leaf Springs
for Precise Linear Motion.............................. 142
6.3.3 Fabrication of Millions of Cantilevers
on a Centimeter Square Chip........................... 142
6.3.4 Strength Measurement of the Nano-Oscillator ............ 144
6.4 Characterization ........................................... 147
6.5 Conclusion ................................................ 148
References ..................................................... 149
7 Micromachined Scanning Tunneling Microscopes
and Nanoprobes
Hiroyuki Fujita, Yasuo Wada, Dai Kobayashi, Gen Hashiguchi........ 153
7.1 Operating Principles and Basic Structure...................... 154
7.2 Micro-STM Design Considerations............................ 155
7.2.1 Basic Design of Electrostatic Actuators.................. 155
7.2.2 Vibration Frequency of the Micro-STM.................. 157
7.3 Surface Micromachining and Bulk Micromachining.............. 158
7.4 Micro-STM Fabrication Technology........................... 159
X Contents
7.4.1 Surface Micromachined STM Chip Fabrication Process .... 159
7.4.2 Stick-Free Release of the Micromachined Structure
from the Substrate.................................... 161
7.4.3 Dry Bulk Micromachined STM Chip Fabrication Process .. 162
7.4.4 Fabrication Process
for Single-Crystal Silicon Nanowire and Nanoprobes....... 168
7.4.5 Nanoprobes with Bulk Micromachined Actuators ......... 172
7.5 Characterization of the Fabricated Micro-STM ................. 175
7.5.1 Operation in Air...................................... 175
7.5.2 Operation in Vacuum ................................. 176
7.6 Possible Applications of Micromachine STM Technology......... 179
7.6.1 Micromachine STM for Sub-100 nm Lithography System .. 179
7.6.2 Application to High-Density Data Storage ............... 182
7.6.3 Experimental Tool for Understanding Basic Physics ....... 185
7.7 Conclusion ................................................ 188
References ..................................................... 189
8 Nanoscale Characterization
of Nanostructures and Nanodevices
by Scanning Probe Microscopy
Takuji Takahashi ............................................... 191
8.1 Micromachining Technologies in SPM ......................... 191
8.2 Scanning Tunneling Microscopy and Spectroscopy
for Semiconductors ......................................... 193
8.2.1 Topographic Characterization .......................... 194
8.2.2 Scanning Tunneling Spectroscopy (STS) ................. 194
8.2.3 STM Luminescence from Nanostructures ................ 198
8.2.4 Combination of STM/STS and Laser Illumination ........ 198
8.3 Atomic Force Microscopy (AFM)
on Semiconductor Nanostructures ............................ 200
8.3.1 AFM with a Conductive Tip as a Current Probe.......... 201
8.3.2 Scanning Capacitance Microscopy (SCM) ................ 202
8.3.3 Electrostatic Force Detection........................... 203
8.3.4 Kelvin Probe Force Microscopy (KFM) .................. 204
8.4 Scanning Near-field Optical Microscopy (SNOM) ............... 205
8.5 Nanofabrication Processes Using STM/AFM................... 206
8.6 Concluding Remarks........................................ 209
References ..................................................... 209
List of Contributors
Hiroyuki Fujita Tatsuo Ushiki
Institute of Industrial Science, Department of Anatomy
University of Tokyo and Histology,
4-6-1 Komaba, Meguro-ku, Faculty of Medicine,
Tokyo 153-8505, Japan Niigata University
[email protected] Ashahimachi-dori,
Niigata 951-8510, Japan
Masao Washizu
[email protected]
Department
of Mechanical Engineering,
Hideki Kawakatsu
The University of Tokyo,
Institute of Industrial Science,
7-3-1 Hongo, Bunkyo-ku,
University of Tokyo
Tokyo 113-8656, Japan
4-6-1 Komaba, Meguro-ku,
School of Engineering,
Tokyo 153-8505, Japan
The University of Tokyo
[email protected]
[email protected]
Akira Mizuno Yasuo Wada
Department Waseda University,
of Ecological Engineering, Wasedatsurumaki-cho, Shinjuku-ku,
Toyohashi University of Technology Tokyo 162-0041, Japan
Tempaku-cho, [email protected]
Toyohashi 441-8580, Japan
[email protected] Dai Kobayashi
Institute of Industrial Science,
Patrick Degenaar
University of Tokyo
Imperial College London
4-6-1 Komaba, Meguro-ku,
Exhibition Road,
Tokyo 153-8505, Japan
London SW7 2AZ
[email protected]
[email protected]
Eiichi Tamiya Gen Hashiguchi
Japan Advanced Institute Kagawa University,
of Science and Technology Takamatsu,
1-1 Asahidai, Tatsunokuchi, Kagawa 760-8526,
Ishikawa 923-1292, Japan Japan
[email protected] [email protected]