Stroboscopic Scanning Probe Microscopy and Time-Resolved Molecular-Scale Imaging of Photoexcited Carriers
| Project/Area Number |
16310074
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Nanostructural science
|
|---|
| Research Institution | Osaka University |
|---|
Principal Investigator |
MATSUMOTO Takuya Osaka University, The Institute of Scientific and Industrial Research, Associate Professor, 産業科学研究所, 助教授 (50229556)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
TANIGUCHI Masateru Osaka University, The Institute of Scientific and Industrial Research, Research Associates, 産業科学研究所, 助手 (40362628)
|
|---|
| Project Period (FY) |
2004 – 2006
|
| Project Status |
Completed (Fiscal Year 2006)
|
| Budget Amount *help |
¥15,200,000 (Direct Cost: ¥15,200,000)
Fiscal Year 2006: ¥3,800,000 (Direct Cost: ¥3,800,000)
Fiscal Year 2005: ¥5,300,000 (Direct Cost: ¥5,300,000)
Fiscal Year 2004: ¥6,100,000 (Direct Cost: ¥6,100,000)
|
|---|
| Keywords | Stroboscopic probe / Photo-excited charge transfer / Time-resolved measurement / Electrostatic field calculation / Kelvin force microscopy / Electrostatic force microscopy / ストロボスコピック・プローブ顕微鏡 |
|---|
| Research Abstract |
In this year, we demonstrated time-resolved force detection by using scanning force microscopy. In the dynamic-mode operation, the tip interacts with the surface only at the moment when the tip closes to the sample surface. The interactive duration can be estimated or less. Taking advantage of this short duration, submicrosecond-class time-resolved force detection has been achieved by the coincidence between photo-irradiation and cantilever motion.
Since the frequency of cantilever oscillation is modulated by the tip-sample force change during the scan, it is necessary that the timing of each laser pulse should be synchronized by each stroke of cantilever motion. We examined that the relationship between oscillation amplitude and the laser-pulse delay with various sample bias voltage. The sample was a Si(111) flushed in UHV condition. In usual, oscillation amplitude does not changed by bias voltage in non-contact region. Actually, in case of no laser irradiation, there is no bias effect. However, under the pulsed laser irradiation, the oscillation amplitude is dramatically changed as a function of both delay time and bias voltage. Furthermore, we found dead zone in delay time. These results indicate that the transient charge generated by pulsed laser irradiation can be detected with μs-class resolution.
|
Report
(4 results)
Research Products
(23 results)
-
-
-
-
-
-
-
[Journal Article] A directly fused tetrameric porphyrin sheet and its unique electronic properties that arise from the planar yclooctatetraenecore.2006
Author(s)
Y.Nnakamura, N.Aratani, H.Shinokubo, A.Takagi, T.Kawai, T.Matsumoto, Zin Seok Yoon, Deok Yun Kim, Tae Kyu Ahn, Dongho Kim, A.Muranaka, N.Kobayashi, A.Osuka
-
Journal Title
J. Am. Chem. Soc. 128
Pages: 4119-4127
Description
「研究成果報告書概要(和文)」より
Related Report
-
-
-
-
[Journal Article] A directly fused tetrameric porphyrin sheet and its unique electronic properties that arise from the planar yclooctatetraene core.2006
Author(s)
Yasuyuki Nnakamura, Naoki Aratani, Hiroshi Shinokubo, Akihiko Takagi, Tomoji Kawai, Takuya Matsumoto, Zin Seok Yoon, Deok Yun Kim, Tae Kyu Ahn, Dongho Kim, Atuya Muranaka, Nagao Kobayashi, Atsuhiro Osuka
-
Journal Title
J.Am.Chem.Soc. 128
Pages: 4119-4127
Description
「研究成果報告書概要(欧文)」より
Related Report
-
-
-
-
[Journal Article] A directly fused tetrameric porphyrin sheet and its unique electronic properties that arise from the planar yclooctatetraene core.2006
Author(s)
Yasuyuki Nnakamura, Naoki Aratani, Hiroshi Shinokubo, Akihiko Takagi Tomoji Kawai, Takuya Matsumoto, Zin Seok Yoon, Deok Yun Kim, Tae Kyu Ahn, Dongho Kim, Atuya Muranaka, Nagao Kobayashi, Atsuhiro Osuka
-
Journal Title
J. Am. Chem. Soc. 128
Pages: 4119-4127
Related Report
-
[Journal Article] Directly meso-meso linked porphyrin rings : synthesis, characterization, and efficient excitation energy hopping.2005
Author(s)
Y.Nakamura, in-Wook Hwang, N.Aratani, Tae Kyu Ahn, Dah Mee Ko, A.Takagi, T.Kawai, T.Matsumoto, Dongho Kim, A.Osuka
-
Journal Title
J. Am. Chem. Soc. 127
Pages: 236-246
Description
「研究成果報告書概要(和文)」より
Related Report
-
-
[Journal Article] Directly meso-meso linked porphyrin rings : synthesis, characterization, and efficient excitation energy hopping.2005
Author(s)
Y Nakamura, in-Wook Hwang, N.Aratani, Tae Kyu Ahn, Dah Mee Ko, A.Takagi, T.Kawai, T.Matsumoto, Dongho Kim, A.Osuka
-
Journal Title
J.Am.Chem.Soc. 127
Pages: 236-246
Description
「研究成果報告書概要(欧文)」より
Related Report
-
-
[Journal Article] Directly meso-meso linked porphyrin rings : synthesis, characterization, and efficient excitation energy hopping.2005
Author(s)
Y.Nakamura, in-Wook Hwang, N.Aratani, Tae Kyu Ahn, Dah Mee Ko, A.Takagi, T.Kawai, T.Matsumoto, Dongho Kim, A.Osuka
-
Journal Title
J.Am.Chem.Soc. 127
Pages: 236-246
Related Report
-
-
-
