মধুর Birthday

I wanted to surprize her by going home early. She did by coming home late at 8:30. We had good dinner with Akash and Dinesh in Wanley on CMH Road. I also had Boubhater gift for her.

ফিরে দেখা

Sooo? Today is already Wednesday. But I atleast went to IISc on Saturday. Read mostly from the book Sensors : Comprehensive update vol - 2 part - II. I also got a good review paper by Janata(Courtsey - Panto). I think, in the report about gas sensors, I should write about different detection principles of sensors with case studies i.e. citing different papers in that field. But then categorization becomes difficult. According to the book Physics, Chemistry and Technology of Solid State Gas Sensor Devices there are 6 categories :

1. Solid state semiconductor sensors
2. Photonic and photoaccoustic sensors
3. Fiber optic sensors
4. Piezoelectric quartz crystal micobalance sensor
5. Surface accoustic wave sensors
6. Pyroelectric and thermal sensors

According to Janatas review paper, chemical (not gas) sensors are categorized like this:

1. Thermal sensors
2. Mass sensors
3. Electrochemical sensors
4. Potentiometric sensors
5. Amperometric sensors
6. Conductometric sensors
7. Optical sensors
   

According to Sensors update "The different types of chemical sensors may be classified according to the different sensor properties used for particle detection." They are (as listed in the book)

1. Liquid state electrolyte sensors
2. Solid-state electrolyte sensors
3. Electronic conductance and capacitance sensors
4. Field effect sensors
5. Calorimetric sensors
6. Optochemical and photometric sensors
7. Mass-sensitive sensors
   

If we are already confused, lets relate things. I think Surface Accoustic Wave(SAW) sensor is a mass-sensitive sensor. (There is also something called BAW, B for bulk). Moseleys book talks about Pellistor(?) or catalytic combustible sensor which should be a thermal/calorimetric/ Pyroelectric sensor. Galvanic sensor will probably be a Liquid/solid-state electrolyte sensor. SnO2 sensor is definitely going to be in Electronic conductance sensors. But I have a strong feeling that SAW has something to do with Piezoelectric quartz crystal micobalance sensors. Now I should read about all these different sensing principles.
One of the achievements in last three days is I learnt how to use bibtex.
Right now reading an article about "why-mass" in Scientific American. It talks about Higgs field(Dont Ask Me) and Dark energy/matter etc. The last column anti-gravity is also a good reading.
I also read one paper about frequency dependent bifurcation in height-of-rise of a conducting liquid between two electrodes coated with dielectric(Done in Rochester university) in JMM June 2004 issue. I also located a review on Micropumps in the same issue.
I will now try to answer the questions raised in the previous blog. Lets start with

• What is X-ray crystallography?

JAVA sensor CATIA compressor bibtex classpath = Life?

yo Weekend

Darun weekend katlo. Shanibar IISc mostly. Sunday Lakshya and Andaz Apna Apna and ফুচকা and evening-walk and great Tarka by মধুরািন.

I liked Lakshya a LOT. Rhitik is too good and music is damn good and "Main aisa kiun hoon" dance is too good Preity Zinta is too good. Bomman Irani is too good. and Farhan Akhtar is too good.

Shadow of the Past

Started LOTR at last. Couldnt cross prologue for a long time so skipped part of it and started Book One. Why Tolkien has made the prologue so detailed (and boring) I dont know.

জানার কোন শেষ নেই

Went to IISc today. Amazing place. Everytime I go there I get a new life. I am trying to make a report on Microfabricated Gas Sensors. I could locate the books. But before I could start reading I got tired. The references are :

• Solid State Gas Sensors Moseley and Tofield
• Solid State Chemical Sensors Janata
• Handbook of modern sensors Jacob Fraden
• Microsensors : Principles and Applications Gardner
• Sensor Technology and Devices Ljubisa Ristic

Couldnt locate the Sze books. I somehow dont understand semiconductors in its full. Once it crosses p-n junction I get lost. I think I should buy the book by Sze. If I read it carefully probably I will crack FET and MOSFET and etc. Specially the band theory, work function, Firmi-Dirac distribution. I badly need some homework to do. Also forgot to check for Massey for fluid mech. One of these days I am going to go to Avenue Road and get these two books.
I downloaded Papanda's white paper but still couldnt get time to read it.

Then I went to journal section. I somehow got convinced that one should narrow down his research topics. The way I have done it to MEMS and then try to excel in it. So I stopped reading Chaos and Control. I mean stopped goofing around in every lane.
But somehow today I felt this could be dangerous. As a spectator of Science and Technology Show we should probably try to cover as much as possible. So I read Nature(2nd June). There is an article on Simulation of Galaxy. But I forgot or dont know basic things, I realized. So here are the basic questions I gathered :

• What is X-ray crystallography?
• What is Nuclear Magnetic Resonance?
• What is Protein?
• What is gamma ray?
  

I will try to answer them here. Btw this is a new blog which I plan to update weekly(Saturday or Monday). I also plan to go to IISc every Saturday. Lets see what happens to this new venture.

All my best memories, Come back clearly to me ...

আমাদের টেডি

Kipling shocked me. yesterday I read one In the house of suddhoo. Ordinary one. in the morning I read Servants of queen which is so funny and all. But the ending is so hopelessly out-of-the-blue-pro-imperialistic.He could have done justice by putting an end which is in tune with the rest of the story.

Anyway, did some 5 problems from the Incropera chapter 6. Boundary layer is interesting enough.

আমার বৌ এত্তো ভালো

Looks like this is becoming like a Rudyard Kipling blog.Read Muhammad Din. Touching. from Indian Stories.

মা তরম

ar ekta galpa jungle book theke.let me remember. i think its toomai of the elephants. set in colonial india where Peterson sahib catches হািত ৷

আজ শুরু

Aajke Jungle Book er ekta galpa parlam The White Seal. sundar galpa.na ekta noi duto galpa.ditiya galper namta ektu kathin.Rikki-Tikki-Tavi. seta o sundar galpa.

pratham galpa suru hoi ekta jaiga theke jar nam Novastoshnah. boita publish hoyechhilo 1894 e. sekhetre ei link ta parle Novastoshnah ar seal shikar samparke jana jabe. Mongoose er bangla nam bodh hoi নেউল অথবা ভোঁদড়