Name: near-infrared temperature measurement technique for water surrounding an induction-heated small magnetic sphere
Uploaded: 2018-04-30T14:00:00
Description: Watch this Scientific Journal Video about Near-Infrared Temperature Measurement Technique for Water Surrounding an Induction-heated Small Magnetic Sphere at JoVE.com

作者感谢健太山田先生、Ryota 藤冈先生和水木许田先生对实验和数据分析的支持。这项工作得到了 jsp KAKENHI 赠款25630069号, 铃木基金会和日本精密测量技术促进基金会的支持。

1. 实验设置和程序
准备一个光学轨道, 以安装一个样品和光学为近红外成像如下。
<ol><li>
样品准备。 注: 当使用水或液体时, 做步骤1.1.1。当使用高粘度的水凝胶时, 做步骤1.1.2。<ol>
<li>钢球在水中设置。<ol>
<li>用少量胶水固定一个2.0 毫米直径的钢球到一个薄薄的塑料弦的末端。</li>
			<li>将钢球挂在矩形玻璃单元格的中心, 其光学路径长度为10.0 毫米, 宽度为10?...

<ol>
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本文所提出的技术是利用近红外吸收水的温度依赖性, 在建立必要的设备和实施方面没有很大困难的一种新方法。使用卤素灯和 NBPF 可以很容易地产生入射光。然而, 激光不能使用, 因为相干干扰模式将出现在图像上。可用于可见光使用的普通光学透镜和玻璃细胞, 因为它们在λ上传输足够的光 (1150 毫微米和 1412 nm)。此外, InGaAs 相机现在可以以相对低廉的价格购买。
NBPFs ...

在许多科研领域和应用中, 需要一种测量介质中小热源附近温度的技术。例如, 在磁性热疗的研究中, 这是一种利用磁粒子电磁感应或小磁片进行癌症治疗的方法, 对于准确预测磁性产生的温度分布至关重要。粒子1,2。但是,虽然微波3,4, 超声波 5,6,7,8, 光声 9, 拉曼 10, 和磁共振 11,对12基于的温度测量技术进行了研究和开发, 目前无法准确测量出这种内部温度分布。到目前为止, 在一些位置的单位置温度或温度是通过温度传感器测量的, 在感应加热的情况下, 是非磁性光纤温度传感器13,14。或者, 通过红外辐射温度计远程测量介质的表面温度, 以估计内部温度14。然而, 当含有小热源的介质是水层或非浑浊的水介质时, 我们已经证明, 近红外吸收技术对于测量温度15、16是有用的, 17,18,19。本文介绍了该技术的详细协议和代表性结果。
近红外吸收技术是基于近红外区域水吸收带温度依赖性的原理。如图 1a所示, ν1 + ν2 + ν3的水的吸收带在 1100 nm 到 1250 nm 波长 (λ) 范围内, 并随着温度的变化而变短波长。增加19。这里, ν1 + ν2 + ν3表示此波段对应于三基本的 O H 振动模式的组合: 对称拉伸 (ν1), 弯曲 (ν 2)和求解反对称拉伸(ν 3)20, 21。频谱的这种变化表明, 波段中最温度敏感的波长是λ ≈ 1150 nm。其他吸收的水带也表现出类似的行为, 有关温度15,16,17,18,20,21。ν1 + ν3在范围λ = 1350−1500 nm 中观察到的水带, 其温度依赖性在图 1b中显示。在ν1 + ν3带水中, 1412 nm 是温度敏感度最高的波长。因此, 有可能获得二维 (2D) 温度图像, 使用近红外相机捕捉2D 吸光度图像在λ = 1150 或 1412 nm。由于水的吸收系数在λ = 1150 毫微米小于在λ = 1412 毫微米, 前波长为大约10毫米厚实的水介质是适当的, 而后者适合大约1毫米厚实部分。最近, 使用λ = 1150 nm, 我们得到的温度分布在一个10毫米厚的水层包含感应加热1毫米直径钢球19。此外, 使用λ = 1412 nm15,17, 测量了0.5 毫米厚水层中的温度分布。
基于近红外测温技术的一个优点是, 它简单的设置和实现, 因为它是一种透射吸收测量技术, 不需要荧光, 荧光粉, 或其他热探针。此外, 其温度分辨率小于 0.2 K15,17,19。这种良好的温度分辨率不能通过基于干涉测量的其他传输技术来实现, 这种方法经常用于热和传质研究22,23,24。然而, 我们注意到, 近红外温度成像技术在局部温度变化较大的情况下并不适用, 因为由大温度梯度引起的光偏转成为占主导地位的19。本文从实际使用的角度介绍了这一问题。
本文介绍了基于近红外测温技术的小磁球感应加热的实验设置和步骤;此外, 它还提供了两个代表性的2D 吸光度图像的结果。一个图像是一个2.0 毫米直径的钢球在10.0 毫米厚的水层, 捕获在λ = 1150 nm。第二个图像是一个0.5 毫米直径的钢球在2.0 毫米厚的麦芽糖糖浆层, 捕获在λ = 1412 nm。本文还提出了将逆阿贝尔变换 (IAT) 应用于2D 吸光度图像的三维 (3D) 径向分布的计算方法和结果。当3D 温度分布假定为球状对称时, IAT 是有效的, 如加热球体 (图 2)19中的情况。对于 IAT 计算, 在这里采用了一种多高斯函数拟合方法, 这是因为可以通过分析25、26、27、28、29 (IATs) 来获得高斯函数的可解析性.并适合于单调地减少数据;这包括使用来自单一热源的热传导的实验。

<table border="0" cellpadding="0" cellspacing="0" style="width:727px;" width="727">
	<colgroup>
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		<col />
		<col />
		<col />
	</colgroup>
	<tbody>
		<tr height="21">
			<td height="21" style="height:21px;width:233px;">Induction heating system</td>
			<td style="width:208px;">CEIA, Italy</td>
			<td style="width:119px;">SPW900/56</td>
			<td style="width:167px;">780 kHz, 5.6 kW (max).</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:233px;">Coil</td>
			<td style="width:208px;">SA-Japan</td>
			<td style="width:119px;">custom</td>
			<td>Water-cooled copper tube; two-turn; outer dia. 28 mm.</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:233px;">Water chiller</td>
			<td style="width:208px;">Matsumoto Kikai, Japan</td>
			<td style="width:119px;">MP-401CT</td>
			<td></td>
		</tr>
		<tr height="41">
			<td height="41" style="height:41px;width:233px;">Halogen lamp</td>
			<td style="width:208px;">Hayashi Watch-Works, Japan</td>
			<td style="width:119px;">LA-150UE-A</td>
			<td></td>
		</tr>
		<tr height="41">
			<td height="41" style="height:41px;width:233px;">Narrow bandpass filter for &#955; = 1150 nm</td>
			<td style="width:208px;">Andover</td>
			<td style="width:119px;">115FS10-25</td>
			<td>Full width at half-maximum (FWHM): 10 nm.</td>
		</tr>
		<tr height="41">
			<td height="41" style="height:41px;width:233px;">Narrow bandpass filter for &#955; = 1412 nm</td>
			<td style="width:208px;">Andover</td>
			<td style="width:119px;">semi-custom</td>
			<td>Full width at half-maximum (FWHM): 10 nm.</td>
		</tr>
		<tr height="41">
			<td height="41" style="height:41px;width:233px;">Bandpass filter for &#955; = 850&#8722;1300 nm</td>
			<td style="width:208px;">Spectrogon</td>
			<td style="width:119px;">SP-1300</td>
			<td></td>
		</tr>
		<tr height="41">
			<td height="41" style="height:41px;width:233px;">Bandpass filter for &#955; = 1100&#8722;2000 nm</td>
			<td style="width:208px;">Spectrogon</td>
			<td style="width:119px;">SP-2000</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:233px;">NIR camera</td>
			<td style="width:208px;">FLIR Systems</td>
			<td style="width:119px;">Alpha NIR</td>
			<td>InGaAs</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:233px;">Image acquisition software</td>
			<td style="width:208px;">FLIR Systems</td>
			<td style="width:119px;">IRvista</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:233px;">Image processing software</td>
			<td style="width:208px;">NIH</td>
			<td style="width:119px;">ImageJ</td>
			<td>ver. 1.51r</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:233px;">Image processing software</td>
			<td style="width:208px;">MathWorks</td>
			<td style="width:119px;">Matlab</td>
			<td>ver. 2016a</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:233px;">Telecentric lens</td>
			<td style="width:208px;">Edmond Optics</td>
			<td style="width:119px;">55350-L</td>
			<td>X1</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:233px;">Steel sphere (0.5 mm dia.)</td>
			<td style="width:208px;">Kobe Steel, Japan</td>
			<td style="width:119px;"></td>
			<td>Fe-1.5Cr-1.0C-0.4Mn (wt %)</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:233px;">Steel sphere (2.0 mm dia.)</td>
			<td style="width:208px;">Kobe Steel, Japan</td>
			<td style="width:119px;"></td>
			<td>Fe-1.5Cr-1.0C-0.4Mn (wt %)</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:233px;">Maltose syrup as aqueous gel</td>
			<td style="width:208px;">Sonton, Japan</td>
			<td style="width:119px;">Mizuame</td>
			<td>Food product</td>
		</tr>
	</tbody>
</table>

near-infrared temperature measurement technique for water surrounding an induction-heated small magnetic sphere

介绍了一种测量感应加热小磁球周围水和非混浊水介质温度的方法。这个技术利用1150年和1412毫微米的波长, 水的吸收系数取决于温度。水或非混浊水凝胶含有2.0 毫米或0.5 毫米直径的磁性球体被辐照1150毫微米或 1412 nm 入射光, 选择使用一个狭窄的带通滤波器;此外, 二维吸光度图像, 这是横向预测的吸收系数, 是通过近红外相机获取。当温度的三维分布可以假设为球状对称时, 将逆阿贝尔变换应用于吸光度剖面估计。根据时间和感应加热功率, 观察到温度的变化。

ΔAi的图像 (x, z) 在λ = 1150 毫微米为一个2.0 毫米直径钢球形在水和在λ = 1412 毫微米为一个0.5 毫米直径钢球形在麦芽糖糖浆在图 5A和显示图 6分别为。在这两种情况下, 球体位于线圈底部的12毫米, 沿其中心轴线。图 5b和<strong cla...

Watch this Scientific Journal Video about Near-Infrared Temperature Measurement Technique for Water Surrounding an Induction-heated Small Magnetic Sphere at JoVE.com

Near-Infrared Temperature Measurement Technique for Water Surrounding an Induction-heated Small Magnetic Sphere

提出了一种利用1150年和 1412 nm 波长测量感应加热小磁球周围水温度的技术。

感应加热小磁球周围水近红外测温技术

A technique to measure the temperature of water and non-turbid aqueous media surrounding an induction-heated small magnetic sphere is presented. This ...

Education

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JoVE Core

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Physics

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Unit 1

Units, Dimensions, and Measurements

Physics Basics

Electronic Structure of Atoms

SCIENTISTS IN ACTION

The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids

Horizontal and vertical liquid bridges are simple and powerful tools for exploring the interaction of high intensity electric fields (8-20 kV/cm) and ...

科研

工程学

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials

对于新材料的低温磁输运测量先进的实验方法

Novel electronic materials are often produced for the first time by synthesis processes that yield bulk crystals (in contrast to single crystal thin film ...

Optical Trap Loading of Dielectric Microparticles In Air

介电微粒的光阱装载在空气中

We demonstrate a method to trap a selected dielectric microparticle in air using radiation pressure from a single-beam gradient optical trap. Randomly ...

An Available Technique for Preparation of New Cast MnCuNiFeZnAl Alloy with Superior Damping Capacity and High Service Temperature

新型高性能 MnCuNiFeZnAl 合金的制备及高温性能研究

Manganese (Mn)-copper (Cu)-based alloys have been found to have&#160;damping capacity and can be used to reduce harmful vibrations and noise effectively. ...

Design and Fabrication of an Optical Fiber Made of Water

一种水上光纤的设计与制造

In this report, an optical fiber of which the core is made solely of water, while the cladding is air, is designed and manufactured. In contrast with ...

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

通过组合磁量表和两个光纤布拉格光栅进行随机位移测量

Long-distance displacement measurements using optical fibers have always been a challenge in both basic research and industrial production. We developed ...

Measurement of Dynamic Force Acted on Water Strider Leg Jumping Upward by the PVDF Film Sensor

PVDF 薄膜传感器对水黾腿跳起动力的测量

This study aimed to make an explanation for the phenomenon in nature that water strider usually jumps or glides on the water surface easily but quickly, ...

O-cresol Concentration Online Measurement Based On Near Infrared Spectroscopy Via Partial Least Square Regression

O-cresol 浓度在线测量基于近红外光谱通过部分最小平方回归

Unlike macroscopic process variables, near-infrared spectroscopy provides process information at the molecular level and can significantly improve the ...

Method Development for Contactless Resonant Cavity Dielectric Spectroscopic Studies of Cellulosic Paper

纤维素纸非接触式共振腔电谱研究的方法研究

The current analytical techniques for characterizing printing and graphic arts substrates are largely ex situ and destructive. This limits the amount of ...

In Situ Surface Temperature Measurement in a Conveyor Belt Furnace via Inline Infrared Thermography

通过内联红外热成像在输送带炉中的原点表面温度测量

Measuring the surface temperature of objects that are processed in conveyor belt furnaces is an important tool in process control and quality assurance. ...