This work was partly supported by Nippon Sheet Glass Foundation for Materials Science and Engineering and JSPS KAKENHI (Grant-in-Aid for Challenging Exploratory Research, #50362281).

注意:化学品和解决方案时一定要小心。按照相应的安全实践和戴手套，眼镜和白大褂在任何时候。要知道，相比于他们的对手散装纳米材料可能有额外的危害。 1.摄政的制备<ol><li>制备通过溶解0.0012克1,1&#39;-二甲基-4,4&#39;-双吡啶鎓二氯化物的甲基紫精的水溶液;在20毫升水中，得到0.2mM的MV 2+（甲基紫精的MV 2+）。 </li><li>通过在10毫升的水0.1050克金（Ⅲ）四氯化三水合物（氯金酸4•3H 2 O） 的溶解，得到25mM的氯金酸4准备金（Ⅲ）氯化物水溶液。 </li><li>制备通过溶解0.03844克四氢硼酸钠在10毫升水的硼氢化钠水溶液（加入NaBH 4），得到100毫加入NaBH 4。 </li><li>准备由dissolv 2- ammoniumethanethiol水溶液ING0.2985克在25ml水中2- ammoniumethanethiol氯化物盐（2-AET +），得到100毫摩尔2- AET +。 </li></ol> 2. TNS胶体悬浮液的合成注:二氧化钛纳米片（TNS的Ti 0.91 O 2），分别按照既定的程序制备先前22,23,30报道。 <ol><li>通过煅烧铯2 CO 3（0.4040克）和TiO 2的化学计量混合物制备层状钛酸铯Cs的0.7的Ti 1.825 O 4的原料（ST-01;0.5000克）在800℃20小时22。重复此两次。 </li><li>制备质子化层状钛酸盐（H 0.7的Ti 1.825 O 4·H 2 O）通过用盐酸（100毫，81.42毫升）通过使用振动筛（300赫兹）12小时水溶液反复处理0.8142克钛酸铯。 </li><li>准备剥离的层状钛酸盐（TNS）胶体悬浮由在黑暗条件下环境温度的水溶液约2周-搅拌质子钛粉（0.0998克）大力（500转），用25毫升17毫米四丁基铵（TBA + OH）的。将所得乳白色悬浮液包含落二氧化钛纳米片（TNS 1.4克/升，pH值= 11〜12）。 </li></ol> 3. TNS 21薄膜的合成<ol><li> TNS的制备延薄膜（C-TNS） <ol><li>预清洁的玻璃基板（约20×20mm的2）通过使用在1M氢氧化钠水溶液（氢氧化钠）的超声波清洗器（27千赫）30分钟的超声波处理。 </li><li>冲洗用5-10毫升的超纯水（&lt;0.056μS-1）的基板。 </li><li> 3分钟浸在0.1M盐酸水溶液（HCl）的玻璃基板，用5-10毫升的超纯水漂洗。 </li><li>清洁通过在纯水中超声处理（27千赫）的衬底1小时，并然后用纯净水冲洗。干后用2-3分钟的吹风机（直到干）。 </li><li>铸于300微升等分试样在玻璃基板上的TNS的胶体悬浮液。 </li><li>干燥在60℃下2小时使用干烤箱，得到的c-TNS膜。 </li></ol></li><li> TNS烧结膜的制备（S-TNS） <ol><li>在500℃下实现的玻璃基片（S-TNS膜），烧结在空气中获得的c-TNS薄膜上的TNS部件的热固定3小时（加热从25至500℃，以6.8℃的速度/分钟），使用烘箱。 </li><li>重复该烧结过程两次。 </li></ol></li><li> 薄膜的制备 <ol><li>当S-TNS膜浸渍在溶液中，放置敷S-TNS膜以使其朝向对于所有实验程序的顶部。 </li><li>覆盖铝箔设置，以避免TNS的光反应开展黑暗条件下的所有实验。 </li></ol></li><li> 预甲基紫精（MV 2+）插TNS薄膜（TNS / MV 2+）的paration <ol><li>在培养皿中在黑暗条件下在室温（RT）下的MV 2+氯化盐的水溶液（0.2毫3毫升）7小时浸入一个s-TNS膜。 </li><li>在黑暗中使用烘箱〜1小时漂洗用超纯水（5-10毫升）并在空气中干燥得到的样品在60℃。 </li></ol></li><li> 金的制备（Ⅲ）插TNS薄膜（TNS /金（III）） <ol><li>在氯金酸4在培养皿中在RT黑暗条件下的水溶液中（25毫米，3毫升）3小时浸泡一个TNS / MV 2+膜。 </li><li>在黑暗中使用烘箱〜1小时漂洗用超纯水（5-10毫升）并在空气中干燥得到的样品在60℃。 </li></ol></li><li> TNS膜的夹层空间内的金纳米粒子的合成（TNS /金纳米粒子） <ol><li>在加入NaBH 4的水溶液浸入一个TNS /金（Ⅲ）膜</sub&gt;（0.1M，5ml）的培养皿在室温黑暗条件下0.5小时。 </li><li>在黑暗中使用烘箱〜1小时干燥空气中得到的薄膜在60℃。 </li></ol></li><li> 2 AET +插TNS薄膜的制备（TNS / 2-AET +） <ol><li>在培养皿中，在室温24小时（0.1M，3ml）中-在2-AET +氯的水溶液浸泡的s TNS膜。 </li><li>漂洗在黑暗中约1小时使用烘箱获得具有超纯水（5-10毫升）并在空气中干燥的薄膜在60℃下。 </li></ol></li><li> 金（Ⅲ）和2- AET +共插TNS薄膜（TNS / 2-AET + /金（III））。 <ol><li>在氯金酸4在室温3小时的水溶液（25毫，3毫升）浸入一个TNS / 2-AET +膜。 </li><li>在黑暗中使用烘箱〜1小时漂洗用超纯水（5-10毫升）并在空气中干燥得到的薄膜在60℃。 </li></ol></li><li> 金纳米粒子withi的合成ÑTNS / 2-AET +膜的层间空间（TNS / 2-AET + /金纳米粒子）。 <ol><li>在加入NaBH 4（0.1M，5ml）中的在培养皿中在RT黑暗条件下的水溶液中0.5小时浸泡一个TNS / 2-AET + /金（Ⅲ）膜。 </li><li>在黑暗中使用烘箱〜1小时漂洗用超纯水（5-10毫升）并在空气中干燥得到的薄膜在60℃。 </li></ol></li><li> 刻画 <ol><li>进行X射线衍射（XRD）使用具有单色的Cu-Kα辐射（λ= 0.15405 nm）的桌面X射线衍射分析21，在30千伏和15毫安操作。 </li><li>以能量色散X射线光谱仪（EDS）光谱21。 </li><li>采用多通道光检测器或稳态紫外可见（UV-VIS）吸收分光光度计记录紫外-可见吸收光谱使用透射模式21所制备的样品。 </li></ol></li></ol>

We have nothing to disclose.

这个手稿提供了原位合成TNS膜的层间空间内金粒子（AuNPs）的详细协议。这是在原位合成TNS的层间空间内金纳米粒子的第一份报告。此外，我们发现，2-AET +作品作为TNS的夹层内的AuNPs有效的保护试剂。这些方法杂交金纳米粒子和TNS透明薄膜。 TNS膜具有良好的光学透明性21是通过烧结工艺（S-TNS膜）合成，如在协议部分呈现。烧结过程重复所需的完全除去有机杂质。当?...

各种贵金属纳米颗粒（的MNP）表现出特征的颜色或色调由于它们的局域型表面等离子体共振（LSPR）特性;因此，的MNP可以各种光学和/或光化学应用1-4中使用。最近，金属氧化物半导体（MOS）的光催化剂，如二氧化钛（TiO 2）和的MNP，组合已被彻底研究作为新型光催化剂5-14。然而，在许多情况下，存在该MOS表面上非常少量的MNP的，因为大多数的MOS颗粒具有相对低的表面积。另一方面，层状金属氧化物半导体（LMOSs）显示出光催化性能，还具有大的表面积，典型地几百平方米每一个LMOS 15-17的单位为g。此外，各种LMOSs具有插层性质（ 即，各种化学物质可被容纳他们的膨胀和大中间层的空间内）15-20。因此，具有的MNP和LMOSs的组合，预期相对大量的MNP都与半导体光催化剂杂交。 我们已经报道了铜纳米粒子（CuNPs）21改性活生物体的夹层空间内的原位合成第一，通过非常简单的步骤透明薄膜（二氧化钛纳米片TNS 16-30）。然而，尚未报道的合成方法的细节和其他贵金属的MNP和TNS杂种的表征。此外，TNS层内的CuNPs很容易被氧化和环境条件下，21脱色。因此，我们集中于金粒子（AuNPs），因为金纳米粒子被广泛用于各种光学，光化学，和催化的应用，并且预期他们将抗氧化3-5,7,8,10-14相对稳定，28,31,32。在这里，我们报告TNS和表演塔的夹层空间内金纳米粒子的合成ŧ2 ammoniumethanethiol（2-AET +; 图1插图）有效地工作，作为TNS的夹层内的金纳米粒子的保护剂。

<table border="0" cellpadding="0" cellspacing="0" width="979">
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		<col />
		<col />
		<col />
	</colgroup>
	<tbody>
		<tr height="22">
			<td height="22" style="height:22px;width:295px;">Methyl viologen dichloride</td>
			<td style="width:173px;">Aldrich Chemical&#160; Co., Inc.</td>
			<td style="width:124px;">1910-42-5</td>
			<td style="width:388px;"></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;">Tetrabutylammonium hydroxide</td>
			<td>TCI</td>
			<td>T1685</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;">cesium carbonate</td>
			<td>Kanto Chemical Co., Inc.</td>
			<td>07184-33</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;">anatase titanium dixoide</td>
			<td>Ishihara Sangyo Ltd.</td>
			<td>ST-01</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;">hydrochloric acid</td>
			<td>Junsei Chemical Co., Ltd.</td>
			<td>20010-0350</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;">sodium hydroxide</td>
			<td>Junsei Chemical Co., Ltd.</td>
			<td>195-13775</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;">Tetrachloroauric(III) acid trihydrate</td>
			<td>Kanto Chemical Co., Inc.</td>
			<td>17044-60</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;">sodium tetrahydroborate</td>
			<td>Junsei Chemical Co., Ltd.</td>
			<td>39245-1210</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;">2-ammoniumethanethiol hydrochloride</td>
			<td>TCI</td>
			<td>A0296</td>
			<td></td>
		</tr>
		<tr height="24">
			<td height="24" style="height:24px;">Ultrapure water (0.056 &#181;S/cm)</td>
			<td></td>
			<td></td>
			<td>Milli-Q water purification system (Direct-Q&#174; 3UV, Millipore)</td>
		</tr>
		<tr height="22">
			<td>Microscope slide (Thickness : 1.0&#8764;1.2 mm)</td>
			<td>Matsunami glass Co., Ltd.</td>
			<td></td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;"></td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
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</table>

in situ synthesis of gold nanoparticles without aggregation in the interlayer space of layered titanate transparent films

Combinations of metal oxide semiconductors and gold nanoparticles (AuNPs) have been investigated as new types of materials. The in situ synthesis of AuNPs within the interlayer space of semiconducting layered titania nanosheet (TNS) films was investigated here. Two types of intermediate films (i.e., TNS films containing methyl viologen (TNS/MV2+) and 2-ammoniumethanethiol (TNS/2-AET+)) were prepared. The two intermediate films were soaked in an aqueous tetrachloroauric(III) acid (HAuCl4) solution, whereby considerable amounts of Au(III) species were accommodated within the interlayer spaces of the TNS films. The two types of obtained films were then soaked in an aqueous sodium tetrahydroborate (NaBH4) solution, whereupon the color of the films immediately changed from colorless to purple, suggesting the formation of AuNPs within the TNS interlayer. When only TNS/MV2+ was used as the intermediate film, the color of the film gradually changed from metallic purple to dusty purple within 30 min, suggesting that aggregation of AuNPs had occurred. In contrast, this color change was suppressed by using the TNS/2-AET+ intermediate film, and the AuNPs were stabilized for over 4 months, as evidenced by the characteristic extinction (absorption and scattering) band from the AuNPs.

两种类型的前体薄膜在该研究中使用（ 即，具有和不具有所述保护试剂（2-AET +）TNS的夹层内）。在没有2-AET +，1,1&#39;-二甲基-4,4&#39;-双吡啶鎓二氯化物（甲基紫精; MV 2+）作为中间层的空间的膨胀，因为MV 2+含LMOSs已经常用作在来宾交换方法的中间体用于制备LMOSs 16,17,21,33-36。 金纳?...

Watch this Scientific Journal Video about In Situ Synthesis of Gold Nanoparticles without Aggregation in the Interlayer Space of Layered Titanate Transparent Films at JoVE.com

In Situ Synthesis of Gold Nanoparticles without Aggregation in the Interlayer Space of Layered Titanate Transparent Films

在这里，我们提出了一个协议为原位合成层状钛酸盐薄膜的夹层空间内的黄金纳米粒子（纳米金）的无金纳米颗粒的聚集。即使4个月后没有观察到的光谱变化。合成的材料已预期在催化，光催化，并具有成本效益的电浆设备的开发应用程序。

在没有聚集的层状钛酸盐薄膜透明的层间金纳米粒子的原位合成

Combinations of metal oxide semiconductors and gold nanoparticles (AuNPs) have been investigated as new types of materials. The in situ synthesis of AuNPs ...

in-situ-synthesis-gold-nanoparticles-without-aggregation-interlayer

Research

JoVE Journal

Engineering

In Situ Synthesis of Gold Nanoparticles without Aggregation in the Interlayer Space of Layered Titanate Transparent Films

8.0K 次观看.  Niigata University. 在这里，我们提出了一个协议为原位合成层状钛酸盐薄膜的夹层空间内的黄金纳米粒子（纳米金）的无金纳米颗粒的聚集。即使4个月后没有观察到的光谱变化。合成的材料已预期在催化，光催化，并具有成本效益的电浆设备的开发应用程序。 

视频: In Situ Synthesis of Gold Nanoparticles without Aggregation in the Interlayer Space of Layered Titanate Transparent Films

Synthesis and Functionalization of Nitrogen-doped Carbon Nanotube Cups with Gold Nanoparticles as Cork Stoppers

Nitrogen-doped carbon nanotubes consist of many cup-shaped graphitic compartments termed as nitrogen-doped carbon nanotube cups (NCNCs). These as-synthesized graphitic nanocups from chemical vapor deposition (CVD) method were stacked in a head-to-tail fashion held only through noncovalent interactions. Individual NCNCs can be isolated out of their stacking structure through a series of chemical and physical separation processes. First, as-synthesized NCNCs were oxidized in a mixture of strong acids to introduce oxygen-containing defects on the graphitic walls. The oxidized NCNCs were then processed using high-intensity probe-tip sonication which effectively separated the stacked NCNCs into individual graphitic nanocups. Owing to their abundant oxygen and nitrogen surface functionalities, the resulted individual NCNCs are highly hydrophilic and can be effectively functionalized with gold nanoparticles (GNPs), which preferentially fit in the opening of the cups as cork stoppers. These graphitic nanocups corked with GNPs may find promising applications as nanoscale containers and drug carriers.

We discussed the synthesis of individual graphitic nanocups using a series of techniques including chemical vapor deposition, acid oxidation and probe-tip sonication. By citrate reduction of HAuCl4, the graphitic nanocups were effectively corked with gold nanoparticles due to the chemically reactive edges of the cups.

黄金纳米粒子作为软木塞氮掺杂碳纳米管杯的合成与功能构造

Nitrogen-doped carbon  nanotubes consist of many cup-shaped graphitic compartments termed as  nitrogen-doped carbon nanotube cups (NCNCs).  These ...

科研

工程学

Detection and Recovery of Palladium, Gold and Cobalt Metals from the Urban Mine Using Novel Sensors/Adsorbents Designated with Nanoscale Wagon-wheel-shaped Pores

Developing low-cost, efficient processes for recovering and recycling palladium, gold and cobalt metals from urban mine remains a significant challenge in industrialized countries. Here, the development of optical mesosensors/adsorbents (MSAs) for efficient recognition and selective recovery of Pd(II), Au(III), and Co(II) from urban mine was achieved. A simple, general method for preparing MSAs based on using high-order mesoporous monolithic scaffolds was described. Hierarchical cubic Ia3d wagon-wheel-shaped MSAs were fabricated by anchoring chelating agents (colorants) into three-dimensional pores and micrometric particle surfaces of the mesoporous monolithic scaffolds. Findings show, for the first time, evidence of controlled optical recognition of Pd(II), Au(III), and Co(II) ions and a highly selective system for recovery of Pd(II) ions (up to ~95%) in ores and industrial wastes. Furthermore, the controlled assessment processes described herein involve evaluation of intrinsic properties (e.g., visual signal change, long-term stability, adsorption efficiency, extraordinary sensitivity, selectivity, and reusability); thus, expensive, sophisticated instruments are not required. Results show evidence that MSAs will attract worldwide attention as a promising technological means of recovering and recycling palladium, gold and cobalt metals.

Because of the importance and extensive use of palladium, gold and cobalt metals in high-technology equipment, their recovery and recycling constitute an important industrial challenge. The metal recovery system described herein is a simple, low-cost means for the effective detection, removal, and recovery of these metals from the urban mine.

检测和钯的回收，从城市矿山黄金和钴金属使用标有纳米货车车轮形的孔隙新型传感器/吸附剂

Developing low-cost, efficient processes for recovering and recycling palladium, gold and cobalt metals from urban mine remains a significant challenge in ...

Fabrication and Characterization of Superconducting Resonators

Superconducting microwave resonators are of interest for a wide range of applications, including for their use as microwave kinetic inductance detectors (MKIDs) for the detection of faint astrophysical signatures, as well as for quantum computing applications and materials characterization. In this paper, procedures are presented for the fabrication and characterization of thin-film superconducting microwave resonators. The fabrication methodology allows for the realization of superconducting transmission-line resonators with features on both sides of an atomically smooth single-crystal silicon dielectric. This work describes the procedure for the installation of resonator devices into a cryogenic microwave testbed and for cool-down below the superconducting transition temperature. The set-up of the cryogenic microwave testbed allows one to do careful measurements of the complex microwave transmission of these resonator devices, enabling the extraction of the properties of the superconducting lines and dielectric substrate (e.g., internal quality factors, loss and kinetic inductance fractions), which are important for device design and performance.

Superconducting microwave resonators are of interest for detection of light, quantum computing applications and materials characterization. This work presents a detailed procedure for fabrication and characterization of superconducting microwave resonator scattering parameters.

制备与表征超导谐振器的

Superconducting microwave resonators are of interest for a wide range of applications, including for their use as microwave kinetic inductance detectors ...

Electrospray Deposition of Uniform Thickness Ge23Sb7S70 and As40S60 Chalcogenide Glass Films

Solution-based electrospray film deposition, which is compatible with continuous, roll-to-roll processing, is applied to chalcogenide glasses. Two chalcogenide compositions are demonstrated: Ge23Sb7S70 and As40S60, which have both been studied extensively for planar mid-infrared (mid-IR) microphotonic devices. In this approach, uniform thickness films are fabricated through the use of computer numerical controlled (CNC) motion. Chalcogenide glass (ChG) is written over the substrate by a single nozzle along a serpentine path. Films were subjected to a series of heat treatments between 100 &#176;C and 200 &#176;C under vacuum to drive off residual solvent and densify the films. Based on transmission Fourier transform infrared (FTIR) spectroscopy and surface roughness measurements, both compositions were found to be suitable for the fabrication of planar devices operating in the mid-IR region. Residual solvent removal was found to be much quicker for the As40S60 film as compared to Ge23Sb7S70. Based on the advantages of electrospray, direct printing of a gradient refractive index (GRIN) mid-IR transparent coating is envisioned, given the difference in refractive index of the two compositions in this study.

Electrospray Deposition of Uniform Thickness Ge23Sb7S70 and As40S60 Chalcogenide Glass Films

A method of uniform thickness solution-derived chalcogenide glass film deposition is demonstrated using computer numerical controlled motion of a single-nozzle electrospray.

厚度均匀葛电沉积<sub&gt; 23</sub&gt;锑<sub&gt; 7</sub&gt;取值<sub&gt; 70</sub&gt;和As<sub&gt; 40</sub&gt;取值<sub&gt; 60</sub&gt;硫系玻璃薄膜

Solution-based electrospray film deposition, which is compatible with continuous, roll-to-roll processing, is applied to chalcogenide glasses. Two ...

Spark Plasma Sintering Apparatus Used for the Formation of Strontium Titanate Bicrystals

A spark plasma sintering apparatus was used as a novel method for diffusion bonding of two single crystals of strontium titanate to form bicrystals with one twist grain boundary. This apparatus utilizes high uniaxial pressure and a pulsed direct current for rapid consolidation of material. Diffusion bonding of strontium titanate bicrystals without fracture, in a spark plasma sintering apparatus, is possible at high pressures due to the unusual temperature dependent plasticity behavior of strontium titanate. We demonstrate a method for the successful formation of bicrystals at accelerated time scales and lower temperatures in a spark plasma sintering apparatus compared to bicrystals formed by conventional diffusion bonding parameters. Bond quality was verified by scanning electron microscopy. A clean and atomically abrupt interface containing no secondary phases was observed using transmission electron microscopy techniques. Local changes in bonding across the boundary was characterized by simultaneous scanning transmission electron microscopy and spatially resolved electron energy-loss spectroscopy.

A viable technique for the formation of strontium titanate bicrystals at high pressure and fast heating rate via the spark plasma sintering apparatus is developed.

放电等离子烧结设备中使用的钛酸锶双晶体的形成

A spark plasma sintering apparatus was used as a novel method for diffusion bonding of two single crystals of strontium titanate to form bicrystals with ...

Fabrication of Ultra-thin Color Films with Highly Absorbing Media Using Oblique Angle Deposition

Ultra-thin film structures have been studied extensively for use as optical coatings, but performance and fabrication challenges remain.&#160; We present an advanced method for fabricating ultra-thin color films with improved characteristics. The proposed process addresses several fabrication issues, including large area processing. Specifically, the protocol describes a process for fabricating ultra-thin color films using an electron beam evaporator for oblique angle deposition of germanium (Ge) and gold (Au) on silicon (Si) substrates.&#160; Film porosity produced by the oblique angle deposition induces color changes in the ultra-thin film. The degree of color change depends on factors such as deposition angle and film thickness. Fabricated samples of the ultra-thin color films showed improved color tunability and color purity. In addition, the measured reflectance of the fabricated samples was converted into chromatic values and analyzed in terms of color. Our ultra-thin film fabricating method is expected to be used for various ultra-thin film applications such as flexible color electrodes, thin film solar cells, and optical filters. Also, the process developed here for analyzing the color of the fabricated samples is broadly useful for studying various color structures.

We present a detailed method for fabricating ultra-thin color films with improved characteristics for optical coatings. The oblique angle deposition technique using an electron beam evaporator allows improved color tunability and purity. Fabricated films of Ge and Au on Si substrates were analyzed by reflectance measurements and color information conversion.

用斜角沉积法制备高吸收介质的超薄彩色薄膜

Ultra-thin film structures have been studied extensively for use as optical coatings, but performance and fabrication challenges remain.&#160; We present ...

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

We demonstrate the use of two nuclear-based analytical methods that can follow the modifications of microstructural arrangement of iron-based metallic glasses (MGs). Despite their amorphous nature, the identification of hyperfine interactions unveils faint structural modifications. For this purpose, we have employed two techniques that utilize nuclear resonance among nuclear levels of a stable 57Fe isotope, namely M&#246;ssbauer spectrometry and nuclear forward scattering (NFS) of synchrotron radiation. The effects of heat treatment upon (Fe2.85Co1)77Mo8Cu1B14 MG are discussed using the results of ex situ and in situ experiments, respectively. As both methods are sensitive to hyperfine interactions, information on structural arrangement as well as on magnetic microstructure is readily available. M&#246;ssbauer spectrometry performed ex situ describes how the structural arrangement and magnetic microstructure appears at room temperature after the annealing under certain conditions (temperature, time), and thus this technique inspects steady states. On the other hand, NFS data are recorded in situ during dynamically changing temperature and NFS examines transient states. The use of both techniques provides complementary information. In general, they can be applied to any suitable system in which it is important to know its steady state but also transient states.

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Here, we present a protocol to describe ex situ and in situ investigations of structural transformations in metallic glasses. We employed nuclear-based analytical methods which inspect hyperfine interactions. We demonstrate the applicability of M&#246;ssbauer spectrometry and nuclear forward scattering of synchrotron radiation during temperature-driven experiments.

结构转换的原位和原位研究方法: 金属玻璃结晶的实例

We demonstrate the use of two nuclear-based analytical methods that can follow the modifications of microstructural arrangement of iron-based metallic ...

Controllable Nucleation of Cavitation from Plasmonic Gold Nanoparticles for Enhancing High Intensity Focused Ultrasound Applications

In this study, plasmonic gold nanoparticles were simultaneously exposed to pulsed near-infrared laser light and high intensity focused ultrasound (HIFU) for the controllable nucleation of cavitation in tissue-mimicking gel phantoms. This in vitro protocol was developed to demonstrate the feasibility of this approach, for both enhancement of imaging and therapeutic applications for cancer. The same apparatus can be used for both imaging and therapeutic applications by varying the exposure duration of the HIFU system. For short duration exposures (10 &#181;s), broadband acoustic emissions were generated through the controlled nucleation of inertial cavitation around the gold nanoparticles. These emissions provide direct localization of nanoparticles. For future applications, these particles may be functionalized with molecular-targeting antibodies (e.g. anti-HER2 for breast cancer) and can provide precise localization of cancerous regions, complementing routine diagnostic ultrasound imaging. For continuous wave (CW) exposures, the cavitation activity was used to increase the localized heating from the HIFU exposures resulting in larger thermal damage in the gel phantoms. The acoustic emissions generated from inertial cavitation activity during these CW exposures was monitored using a passive cavitation detection (PCD) system to provide feedback of cavitation activity. Increased localized heating was only achieved through the unique combination of nanoparticles, laser light and HIFU. Further validation of this technique in pre-clinical models of cancer is necessary.

This protocol demonstrates the controllable nucleation of cavitation in gel phantoms, through simultaneous exposure to both near-infrared pulsed laser light and high intensity focused ultrasound (HIFU). The cavitation activity can then be used for enhancing imaging and/or therapeutic uses of HIFU.

等离子金纳米粒子空化的可控核增强高强度聚焦超声应用

In this study, plasmonic gold nanoparticles were simultaneously exposed to pulsed near-infrared laser light and high intensity focused ultrasound (HIFU) ...

Radio Frequency Magnetron Sputtering of GdBa2Cu3O7&#8722;&#948;/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 (STO) Single-crystal Substrates

Here, we demonstrate a method of coating ferromagnetic La0.67Sr0.33MnO3 (LSMO) nanoparticles on (001) SrTiO3 (STO) single-crystal substrates by radio frequency (RF) magnetron sputtering. LSMO nanoparticles were deposited with diameters from 10 to 20 nm and heights between 20 and 50 nm. At the same time, (Gd) Ba2Cu3O7&#8722;&#948; ((Gd) BCO) films were fabricated on both undecorated and LSMO nanoparticle decorated STO substrates using RF magnetron sputtering. This report also describes the properties of GdBa2Cu3O7&#8722;&#948;/ La0.67Sr0.33MnO3 quasi-bilayer films structures (e.g., crystalline phase, morphology, chemical composition); magnetization, magneto-transport, and superconducting transport properties were also evaluated.

Radio Frequency Magnetron Sputtering of GdBa2Cu3O7ÃƒÆ’Ã‚Â¢Ãƒâ€¹Ã¢â‚¬Â 'ÃƒÆ’Ã…Â½ Â´/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 STO Single-crystal Substrates

Here, we present a protocol to grow LSMO nanoparticles and (Gd) BCO films on (001) SrTiO3 (STO) single-crystal substrates by radio frequency (RF)-sputtering.

Gdba2cu 3 o7 的射频磁控管散射-/la0.67sr 0.67 mno 3 准双层薄膜上的 srtio 3 (sto) 单晶基板上

Here, we demonstrate a method of coating ferromagnetic La0.67Sr0.33MnO3 (LSMO) nanoparticles on (001) SrTiO3 (STO) single-crystal substrates by radio ...

An Efficient Method for Selective Desalination of Radioactive Iodine Anions by Using Gold Nanoparticles-Embedded Membrane Filter

Here, we demonstrate a detail protocol for the preparation of nanomaterials-embedded composite membranes and its application to the efficient and ion-selective removal of radioactive iodines. By using citrate-stabilized gold nanoparticles (mean diameter: 13 nm) and cellulose acetate membranes, gold nanoparticle-embedded cellulose acetate membranes (Au-CAM) have easily been fabricated. The nano-adsorbents on Au-CAM were highly stable in the presence of high concentration of inorganic salts and organic molecules. The iodide ions in aqueous solutions could rapidly be captured by this engineered membrane. Through a filtration process using an Au-CAM containing filter unit, excellent removal efficiency (&gt;99%) as well as ion-selective desalination result was achieved in a short time. Moreover, Au-CAM provided good reusability without significant decrease of its performances. These results suggested that the present technology using the engineered hybrid membrane will be a promising process for the large-scale decontamination of radioactive iodine from liquid wastes.

An efficient method for the rapid and ion-selective desalination of radioactive iodine in several aqueous solutions is described by using gold nanoparticles-immobilized cellulose acetate membrane filters.