Chemistry of Wine

Why do you drink wine? For pleasure, health, sociality or no wine? My guess is most of you drink wine for pleasure.


This video was produced by ACS (American Chemical Society) as a webinar presented by Ariel Fenster of McGill University. He uncorks everything you need to know about wine (the history of wine as well as the chemical aspects of fermentation and of aging). Watch this video, it is ~1 hr long.

Some Facts:


- Wine is not the number one in alcoholic beverage, this title goes to Beer. When you talk about wine, France comes first. In France wine consumption is 55 liters/year/person.  This means roughly 5 liters in a month and ~166 mL per day.


- On Canary Island, a child has to take wine bath believing to get some health benefit. 


- 100 Calories/glass of wine, mostly coming from ethanol, small amounts of vitamins (Niacin, Pantothenic Acid, Pyridoxine) 


- Alcohol is converted into acetaldehyde and is responsible for hangover, when you drink too much acetaldehyde doesn't have enough time to get converted into acetic acid. Build up of acetaldehyde is responsible for unpleasant effect of hangover.


- There is belief that wine reduces heart attack, Alzheimer disease.

An argument with CalTech. Chemistry Grad.

Anant Babu Marahatta
Ph.D. student, Tohoku University
(ananta037@gmail.com)

Theme of this article is: “Knowing English is not enough to present Chemistry but one must know Chemistry in English.” (some thing about Amphidynamic Crystal)

In order to strengthen and enhance the education and research functions of graduate schools of Japanese universities, Ministry of Education, Culture, Sports, Science and Technology (MEXT) introduced the “Global COE (Centers of Excellence) Program in some of the top universities of Japan on 2002. Another main objective is to foster highly creative young researchers who will become world’s leaders in their respective fields through experiencing and practicing research of the highest world standard. Molecular complex Chemistry is one of the fields covered by the GCOE.

Being one of the Chemistry doctoral students of the nation’s high tech. university [Tohoku University] with the nation’s largest chemistry department, I also belong to the network of GCOE program. One of the annual events of the Tohoku Univ. sponsored by this program is to provide a chance for the doctoral students to lead a week long Int’l conference. Including the key speakers and the chairpersons of each section, every participant must be the Ph.D. candidate of Chemistry. The professors only act as a facilitator. He/she never interferes the students’ leadership.

Small Science vs. Large Science

Anant　Babu Marahatta
Ph.D. student in chemistry
Tohoku University, Japan

Science carried out by individuals or small teams of investigators is said to be “small science” and the science carried out for large scientific data gathering programs is said to be “large science”.

Research done by individuals or small teams of investigators has been crucial for many of the important discoveries made in all branches of science. The individual or small group research work has been the first step for bringing up the revolutionary changes in the world. Such type of research facilitates the researcher to concentrate in the particular problem and hence increases the thinking level of the researchers as well. It has been found that the research work performed by the individuals or by the small teams is more accurate and reproducible. Since every branch of science needs accuracy which in fact catalyses the rate of tailoring and building up the new inventions and discoveries. These discoveries provide the fundamental basis for the application of scientific knowledge to national economic and societal goals.

Small science helps to define the goals and directions of large scientific data gathering projects [so called large science]. In turn, these data feed and are often best synthesized and interpreted by the long-term efforts of the small science community. In small science, the rate of manipulation of data is almost nil due to the accuracy which perfectly orients into the solutions of the problems.

Two New Elements Confirmed by IUPAC: Elements 114 and 116

A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, which is the number of protonsin its nucleus. There are 94 elements believed to occur naturally on Earth and rest of the elements are synthesized in laboratories.

Are Carbon Nanotubes the Future of VLSI Interconnections?

Original paper is published by-
K. Banerjee and N. Srivastava, University of California


Summarised by Anant B. Marahatta

What is VLSI?
• Very-large-scale integration (VLSI) is the process of creating integrated circuits by combining thousands of transistor-based circuits into a single chip.
• VLSI began in the 1970s when complex semiconductor and communication technologies were being developed. The microprocessor is a VLSI device.


New wiring solutions…!
• Metallic carbon nanotubes (CNTs) are promising candidates that can potentially address the challenges faced by copper and thereby extend the lifetime of electrical interconnects.
• carbon nanotubes (CNTs) have aroused a tremendous amount of interest in their use as building blocks of future integrated circuits due to their outstanding electrical properties

CNT based interconnects can potentially offer significant advantages over copper.
• CNTs exhibit extraordinary strength and unique electrical properties are efficient conductors of heat and are metallic in nature.
•SWCNTs are a very important variety of CNT because they exhibit important electric properties that are not shared by MWCNTs. The remarkable properties of SWCNTs stem from the symmetry and unusual electronic structure of grapheme [one atom thick sheet of graphite].

∙An isolated CNT can carry current densities in excess of 1010 A/cm2 without any signs of damage even at an elevated temperature of 250 0C. However, the high resistance associated with an isolated CNT (greater than 6.45 KΩ) necessitates the use of a bundle (rope) of CNTs conducting current in parallel to form an interconnection. CNT bundle interconnects have superior performance compared to Cu.