最新版はこちら。 突っ込みは各日付の BBS エントリのほか、 メール (nakano@st.seikei.ac.jp) や フォーム からどうぞ。 なおスパム除けのため、BBS 機能には 緩い認証を入れて います。 検索エンジンから来た方は、エンジンの方のキャッシュを見るか、 下の簡易検索を試してみてください。
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Namazu for hns による簡易全文検索 詳しくは 詳細指定/ヘルプを参照して下さい |
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The effect of interfacial interactions on the initial growth of Cu on clean SiO2 and 3-mercaptopropyltrimethoxysilane (MPTMS)-modified SiO2 substrates by sputter deposition was studied using transmission electron microscopy, energy dispersive x-ray spectroscopy, and x-ray photoelectron spectroscopy. Plasma damage during sputter deposition makes surfaces of MPTMS-modified SiO2 substrates consist of small MPTMS islands several tens of nanometers in diameter and bare SiO2 areas. These MPTMS islands are composed of disordered multilayer MPTMS aggregates. The initial growth behavior of Cu on MPTMS-modified SiO2 substrates differs from that on clean SiO2 substrates, although Cu grows in three-dimensional-island mode on both of them. After a 2.5-monolayer Cu deposition on clean SiO2 substrates, spherical Cu particles were formed at a low number density of 1.3×10^16 /m^2 and at a long interparticle distance of 5 nm. In contrast, after the same amount of deposition on MPTMS-modified SiO2 substrates, Cu particles preferentially grow on MPTMS islands at a high number density of 3.9×10^16 /m^2 and at a short interparticle distance of 3 nm, but do not grow on bare SiO2 areas. The increased number density and the decreased interparticle distance indicate that Cu has a lower mobility on MPTMS islands on MPTMS-modified SiO2 substrates than on clean SiO2 substrates. This difference in Cu mobility is attributed to the enhanced interfacial interactions between Cu and S on MPTMS islands on MPTMS-modified SiO2 substrates via the formation of CuS bonds, compared with the relatively weak interfacial interactions between Cu and Si or O on clean SiO2 substrates.
The surrounding sheath focuses the charged particles to distinct parts of the probe surface resulting in nonuniform physical and/or chemical properties. Then, after a time interval dependent of the degree of plasma contamination, this process results in well-defined regions with different work functions that shape the probe characteristic leading to erroneous measurement of plasma temperature and ion density. For Ar/O2 and Ar/SF6 plasmas produced within a multipolar magnetically confined device we investigated bombardment by positive or negative charges and indirect heating to modify the surface of a planar probe.
locate / | wc -lの方がシステムに優しいかも。 あるいは df -i とか。 正確な全数が必要なときはだめだけど。
--- sarg-1.3-PRE1.orig/index.c
+++ sarg-1.3-PRE1/index.c
@@ -23,6 +23,7 @@
char ftime[128];
char day[4], mon[4], year[6], hour[10];
char h[3], m[3], s[3];
+ struct stat statbuf;
if(LastLog[0] != '\0')
mklastlog(dirname,debug);
@@ -59,18 +60,9 @@
obtuser(dirname,direntp->d_name,tuser);
obttotal(dirname,direntp->d_name,tbytes,tuser,media);
- strcpy(html,data);
- getword(mon,html,' ');
- getword(mon,html,' ');
- getword(day,html,' ');
- getword(hour,html,' ');
- getword(year,html,' ');
- getword(year,html,' ');
- strcpy(html,hour);
- getword(h,html,':');
- getword(m,html,':');
- strcpy(s,html);
- buildymd(day,mon,year,ftime);
+ sprintf(html, "%s/%s", dirname, direntp->d_name);
+ stat(html, &statbuf);
+ sprintf(ftime, "%d", statbuf.st_mtime);
sprintf(html,"%s%s%s%s;%s;%s;%s;%s;%s\n",ftime, h, m, s, direntp->d_name,
data, tuser, tbytes, media);
fputs(html, fp_tmp);
しかしこの辺のコード目眩がするな。
What do plastic garbage bags, human flesh, and the skins of apples all have in common? Wrinkles. Classical theory can predict where wrinkles will occur, but their amplitude and wavelength--and the best chance to eliminate them--has proven more difficult. Now, in the 21 February print issue of PRL, a team discovers a general law that quantitatively predicts the size, shape, and structure of wrinkles that appear on any thin film. As simple examples, they correctly estimate the wavelengths for wrinkles on a dried-up apple and on the squeezed skin of a hand. The theory could potentially be used in the manufacture of defect-free thin sheets of paper, glass, metal, and silicon chips. It may even help to control the "crow's feet" wrinkles that appear around people's eyes as they age.皮と肉のエネルギー競合で決まるというお話。おもろそう。
Vg Is Ig N.B. -1 10 0 28 10 300 54 -16というかんじ (電流の単位は 10nA)。 これだと γ〜1 に近くなっちゃうな。 Vg=40〜240V くらいでは、 電流が 20〜50 位の幅で大きく揺れる。 やはり絶縁性が高いのか？厚すぎ？ しかし 野田さんのとき は 60min つけてたんだよなあ。
出力ファイルを切り詰めません。 これによって出力ファイルのブロックの内で明らかに dd によって書き込まれる部分以外は保存されます。 notrunc はテープではサポートされません。ということらしい。なるほど。
Variation of the local electronic structure at rutile TiO2(110) surfaces was studied by scanning tunneling spectroscopy (STS). Structural surface features such as step edges, (1×2) reconstructed strands, and their terminations were correlated to changes in tunneling spectra. In particular, band-gap states, associated with a reduced surface, showed characteristic variations. In addition, electronic variations due to extrinsic defects are discussed. Nanometer wide protrusions in constant current scanning tunneling microscopy images were identified in STS as local electronic alterations. These features are interpreted to be due to local band bending induced by individual, charged impurity atoms.
Detailed kinetic Monte Carlo-molecular dynamics (KMC-MD) simulations of hyperthermal energy (10-100 eV) copper homoepitaxy reveal a reentrant layer-by-layer growth mode at low temperatures (50 K) and reasonable fluxes (1 ML/s. where ML stands for monolayer). This growth mode is the result of atoms with hyperthermal kinetic energies becoming inserted into islands when the impact site is near a step edge. The yield for atomic insertion as calculated with molecular dynamics near (111) step edges reaches a maximum near 18 eV. KMC-MD simulations of growing films find a minimum in the rms roughness as a function of energy near 25 eV. We find that the rms roughness saturates just beyond 0.5 ML of coverage in films grown with energies greater than 25 eV due to the onset of adatom-vacancy formation near 20 eV. Adatom-vacancy pairs increase the island nuclei density and the step-edge density, which increase the number of sites available to insert atoms. Smoothest growth in this regime is achieved by maximizing island and step-edge densities, which consequently reverses the traditional roles of temperature and flux: low temperatures and high fluxes produce the smoothest surfaces in these films. Dramatic increases in island densities are found to persist at room temperature, where island densities increase an order of magnitude from 20 to 150 eV.むにに？
The magnetoconductive properties of ultrathin Pb films deposited on Si(111) are measured and compared with density-functional electronic band-structure calculations on two-dimensional, free-standing, 1 to 8 monolayers thick Pb(111) slabs. A description with free-standing slabs is possible because it turned out that the Hall coefficient is independent of the substrate and of the crystalline order in the film. We show that the oscillations in sign of the Hall coefficient observed as a function of film thickness can be explained directly from the thickness dependent variations of the electronic band-structure at the Fermi energy.これはなかなか説得力のあるデータになっている。
Angle-resolved photoemission data from Al(001) taken with photon energies up to several hundred electron volts show an unexpected surface sensitivity at high energies. The surface state at the center of the surface Brillouin zone can be clearly observed up to photon energies higher than 700 eV. The surface to bulk intensity ratio appears to increase with photon energy, despite the longer inelastic mean-free path of the electrons and the increased vibrational amplitude at the surface. We explain this surprising behavior by considering the effect of phonon excitation in the photoemission event.見事な k-E 図。 本命は surface origin なピークの方だけど。
「あ、先生方は発表はしないで結構ですから。補助員に回ってください」という一言により、準備が無駄になったことが 30 秒で判明 (笑)
私、このたび米国の イオンド大学 より名誉博士号（海洋文学）を授与されることが決まりました。