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課程名稱 |
物化儀器設計：實務、示範與實做
Design of Physical Chemistry Instruments: practical issues |
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開課學期 |
108-2 |
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授課對象 |
理學院 化學系 |
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授課教師 |
林志民 |
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課號 |
Chem5116 |
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課程識別碼 |
223 U2100 |
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班次 |
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學分 |
2.0 |
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全/半年 |
半年 |
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必/選修 |
選修 |
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上課時間 |
星期五8,9(15:30~17:20) |
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上課地點 |
化217 |
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備註 |
限學士班三年級以上 且 限本系所學生(含輔系、雙修生)
總人數上限：60人 |
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Ceiba 課程網頁 |
http://ceiba.ntu.edu.tw/1082Chem5116_ |
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課程簡介影片 |
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核心能力關聯 |
核心能力與課程規劃關聯圖 |
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課程大綱
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課程概述 |
本課程將討論物理化學研究中科學儀器的設計、選擇和操作中的實際問題。
除講課外，將進行相關的演示和動手實驗（實驗為 optional，學生自選）；學生可以使用3D printer 來構建實驗器材。
(1) Signal, background, and noise. Simulate a signal trace at the shot-noise limit.
(2) How to choose the best signal range, for example, in determining the concentration by light absorption measurements.
(3) Demonstrate how a photodiode detector (and its circuit) works; analyze its properties like sensitivity, dynamic range, response time, etc. ***[已備有16個 photodiode 元件 (Hamamatsu S1223-1)]***
(4) Concept of brightness and imaging. |
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課程目標 |
Issues to discuss will include the following:
(0) How sensitive, how precise, how accurate are enough? How well can we do?
(i) Response time and sensitivity in detection
(ii) Dynamic range, linearity, saturation …
(iii) Background Vs. noise
(iv) If time allows, we may further discuss efficient local pumping (in a vacuum chamber) and background gases
From a more fundamental level, a student may learn that various instruments and thus different scientific measurements have a few things in common, such that, it will become much easier to understand different experiments that involve quantitative measurements. |
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課程要求 |
There are 6 experiments to do:
(a) Build a photodiode detector
(b) Measure the time response of a photodiode detector using an LED light source.
(c) Measure the voltage-time profiles of a capacitor discharging through a resistor; check the effect of various resistance & capacitance.
(d) Measure the light reflectance of a soap film at near-normal incidence, including the time evolution. Deduce the thickness of the soap film from the reflectance data.
(e) Measure the light reflectance of a flat surface (like a piece of glass), including the dependences of the incidence angle and polarization.
(f) Build an absorption photometer (with LED & photodiode) to determine the concentration of a dye solution.
For each experiment, a one-page report is required for every student (both upload a pptx file and hand in a hard copy).
Mid-term: pre representation, per group, U-tube format.
Final: representation, per group, U-tube format. |
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預期每週課後學習時數 |
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Office Hours |
備註： Friday 3:00-3:30 & 5:30-6:30 pm |
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指定閱讀 |
Google, ... |
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參考書目 |
Hamamatsu S1223-1 photodiode data sheet;
Hamamatsu silicon photodiode handbook. [第四周講義]
Note: an LED is a useful incoherent light source, which can be continuous or pulsed;
a laser pointer is a useful coherent photon source;
a polarizer film is also very useful.
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評量方式
(僅供參考) |
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No. |
項目 |
百分比 |
說明 |
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1. |
reports |
40% |
one-page per experiment |
2. |
presentation |
60% |
50% grading by the teacher and TAs;
50% grading by the audience. |
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週次 |
日期 |
單元主題 |
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第2週 |
2/28 |
放假 |
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第3週 |
3/06 |
Introduction: Teacher's expertise ...
How we expect to run this class ...
Demonstration: Oscilloscope and rotating polarizer
Signal, background, and noise. Simulate a signal trace at the shot-noise limit.
RC circuit; Oscilloscope |
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第4週 |
3/13 |
Signal, background, and noise. Simulate a signal trace at the shot-noise limit.
Solve a RC circuit. |
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第5週 |
3/20 |
How a photodiode detector (and its circuit) works; analyze its properties like sensitivity, dynamic range, response time, etc.
16 pieces of Hamamatsu S1223-1 photodiode detectors have been prepared. |
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第6週 |
3/27 |
LED + photodiode detector: Signal, background, and S/N ratio.
LED + photodiode detector: Time response
Soap film interference measurement. |
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第7週 |
4/03 |
放假 |
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第8週 |
4/10 |
soap film interference measurement.
Measure the reflectivity of light of a flat surface as a function of angle and polarization.
shot-noise limit. |
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第9週 |
4/17 |
Reflectivity of a flat surface |
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第11週 |
5/01 |
Simple absorption spectrometer |
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第12週 |
5/08 |
How to choose the best signal range, for example, in determining the concentration by light absorption measurements. |
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第13週 |
5/15 |
Simple absorption spectrometer
Concept of brightness |
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第14週 |
5/22 |
Concept of angular distribution |
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第15週 |
5/29 |
Concept of Signal Reflection in a coaxial cable |
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第16週 |
6/05 |
Final Presentation I |
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第17週 |
6/12 |
Final Presentation II |
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第18週 |
6/19 |
All Homeworks |
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