latest news

Sep. 11, 2013

"Molecular Resonant Tunneling Diode between Tribenzosubporphines" in JACS o

Sep. 26, 2013

Guillaume HACKENBERGER and Daniel Eduardo HURTADO SALINAS complete Master course, International Guraduate Course (IGP(A)). Congraturations!

Nov. 1, 2012

"Ideal Discrete Energy Levels in Synthesized Au Nanoparticles for Chemically Assembled Single-Electron Transistors" in ACS Nano

Oct. 20, 2012

"Robust nanogap electrodes by self-terminating electroless gold plating" in Nanoscale

Aug. 2, 2012

"Characterization of thiol-functionalized oligo(phenylene-ethynylene)-protected Au nanoparticles by scanning tunneling microscopy and spectroscopy" in Appl. Phys. Lett.

May. 1, 2012

"Secondary Resonance Magnetic Force Microscopy" in J. Appl. Phys.

Apr. 20, 2012

"Coulomb blockade behaviors in individual Au nanoparticles as observed through noncontact atomic force spectroscopy at room temperature" in Nanotechnology

Apr. 11, 2012

"Single-electron transistors: Logic with chemistry", Resarch Highlights, Nature Nanotechnology

Mar. 1, 2012

"Logic Operations of Chemically Assembled Single-Electron Transistor" in ACS nano

Jan. 31, 2012

"Room-temperature single molecular memory" in APL

APL Cover image

Jan. 27, 2012

ACS appreciate for contribution in the peer review of manuscripts

Jan. 17, 2012

Uniforem charging energy of SET is published in APL

Dec. 9, 2011

Shinya Kano, Candidate of Dr. visited Cavendish Laboratory, Univ. of Cambridge for 3 months to make his PhD research at Prof. Charles G. Smith Lab.

Oct. 3, 2011

Guillaume HACKENBERGER and Daniel Eduardo HURTADO SALINAS were enrolled to Master course, International Guraduate Course (IGP(A)).

Oct. 3, 2011

Victor won GCOE PICE Excellent Student Award. Congraturations.

June 10, 2011

Kyunghwan Jung (Sunchon National Univ., Korea) joined Majima lab. as foreigh visiting student.

May 11, 2011

Victor Serdio (D1) won UENOHARA folleign Student Award. Cograturations.

Dec. 29, 2010

Shinya Kano (D1) was selected as Research Fellowship for Young Scientists (DC1), Japan Society for the Promotion of Science (JSPS). Conbraturations.

Nov. 11, 2010

Assistant Prof. Norio Okabayashi won the Young Scientist Award of the Physical Society of Japan. Congraturations.

Oct. 8, 2010

Our paper has been selected for Cover Art of Nanotechnology.

Oct. 1, 2010

Coulomb blockade observation on 2nm Au nanoparticles is published in APEX

Aug. 24, 2010

Our paper has been selected for Cover Art of J. Phys. Chem. C.

Aug. 24, 2010

Shinya Kano (M2) won Excellent Student Poster Award in "KJF2010" international conference.

Address

Majima Lab
Materials and Structures Laboratory
Dept. of Materials Science and Engineering
Tokyo Institute of Technology
4259 R3-5 Nagatsuta-cho, Midori-ku, Yokohama, 226-8503, Japan.

Majima Lab. Logo

Towards Molecular Devices

bottom-up electronics

Bottom-up electronics enables us to fabricate the single electron devices and molecular devices at high precision of sub-nm order by only dipping a sample into a beaker. In Majima Laboratory, we use scanning probe microscopy to understanding molecular structures and functions, such as molecular resolution scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS). Utilizing these fruits of knowledge, we step forward to establishment of the bottom-up processes toward a solid state single electron devices and molecular devices with self-assembled process and Eletroless Gold Plated (EGP) nanogap electrodes. (CREST-JST project)
Main research topics are; process technology for construction of nanogap electrodes, endohedral metallofullerene single molecular orientation switch and single electron Coulomb blockade electron shuttle device using scanning probe microscopy.

Recent Research Features

APEX 3, 105003 (2010)

Room-Temperature Coulomb Blockade from Chemically Synthesized Au Nanoparticles Stabilized by Acid–Base Interaction

JPCC 114 14704 (2010)

Molecular Orientation of Individual Lu@C82 Molecules Demonstrated by Scanning Tunneling Microscopy(J. Phys. Chem. C Cover Art)

Jpn. J. Appl. Phys. 49, 090206 (2010)

Single-Electron Transistor Fabricated by Two Bottom-Up Processes of Electroless Au Plating and Chemisorption of Au Nanoparticle

JJAP 48 04C180 (2009)

Nanoparticles have gained their great attentions owning to the potential applications for Coulomb islands in double barrier tunneling junctions (DBTJs) towards "beyond CMOS" era.
We have evaluated the tunneling resistance of alkandithiol molecule between alkanthiol-protected Au nanoparticle and Au (111) substrates by means of scanning tunneling spectroscopy (STS). The Au nanoparticles were chemically immobilized (chemisorbed) on Au (111) substrates by alkanedithiol and alkanethiol mixed self-assembled monolayers (SAMs). We found that the density of Au nanoparticles can be controlled by changing the ratio of alkandithiol and alkanthiol in the mixed SAMs and the chemisorbed Au nanoparticles are stable for STS measurements.

X. Li, Y. Yasutake, K. Kono, M. Kanehara, T. Teranishi, Y. Majima.
"Au Nanoparticles Chemisorbed by Dithiol Molecules Inserted in Alkanethiol Self-Assembled Monolayers Characterized by Scanning Tunneling Microscopy"
Jpn. J. Appl. Phys., Vol. 48. pp. 04C180-1-4. 2009 ,Apr.

Research Projects

"CREST-JST" Development of Single Electron Devices by Highly Precise Bottom-up Processes (2008 ~ ongoing)

Prof. Y. Majima is Research Director on Research Project of "Development of Single Electron Devices by Highly Precise Bottom-up Processes", in the research area of "Establishment of Innovative Manufacturing Technology Based on Nanoscience (Research Supervisor; Dr. Y. Horiike)", Core Research of Evolutional Science & Technology (CREST) - Japan Science and Technology Agency (JST).

Emergence of Highly Elaborated π-Space and Its Function(2008 ~ 2013)

Prof. Y. Majima is Research Director in "Emergence of Highly Elaborated π-Space and Its Function" (Research Supervisor: T. Akasaka, Tsukuba Univ.), Grant-in-Aid for Scientific Research on Innovative Areas, MEXT, Japan

Postscaling Technology (2008)

Prof. Y. Majima was Research Director in the research area of "Postscaling Technology (Research Superviso: Prof. S. Zaima, Nagoya Univ.)", Grant-in-Aid for Scientific Research on Priority Areas, MEXT, Japan.

Electron Transport through linked Molecule (2006 ~ 2008)

Prof. Y. Majima was Research Director in the research area of "Electron Transport through linked Molecule" (Research Supervisor: Prof. M. Kawai, Tokyo Univ.)", Grant-in-Aid for Scientific Research on Priority Areas, MEXT, Japan.

Grants-in-Aid for Scientific Research (A) (2006 ~ 2009)

Prof. Y. Majima was Research Director on "Study of Scanning Lorentz Force Microscopy", Grants-in-Aid for Scientific Research (A), MEXT, Japan.

Solution Oriented Research for Science and Technology (SORST) JST (2003 ~ 2007)

Prof. Y. Majima was Research Representative on "Development of nanomechanical single-electron devices" in Solution Oriented Research for Science and Technology (SORST), Japan Science and Technology Agency (JST).

Precursory Research for Embryonic Science and Technology (PRESTO) JST (2000 ~ 20003)

Prof. Y. Majima was Research Director on "Dicplacement current staircase due to Coulomb blockade and its application" in Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST).

Research Collaborators